Alcatel-1641SX

Techn echnical ical Desc Descript ri ptio ion n

TM Alcate Alcatell O O ptinex ptin ex 1641 SX

4/ 3/ 1 Multi Service ervice Metro Gateway Rel ea se 6

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Issue 9

August 20 0 1

Contents Page O ver vi ew Main Features of Alcatel OptinexTM 1641 SX Releas lease e6 o t d e tt i m m o c s i l e t a c l A ,r e v e w o H . d e b ri c s e d t n e m p i u q e e h t

y a m s e g n a h C .t n e m p o l e v e d d n a h rc a e s re s u o u n ti n o c

. e c ti o n t u o h ti w re u t u f e h t n i e d a m e b re o f re e h t

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Gen General ral Design ign and Ope Operat rational Aspects

12

Cross Connect Matrix

13

Line Interface

14

N etwork Management Interfaces

14

Control System

15

Clock G ener ation and Distribution

16

Upgrade Philosophy

16

Extensibility

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Upgradability

17

Main Benefits for the O perator

17

Major Differences to Release 5

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A p p l i ca t i o n s N etwork Applications

18 20

Cross Cross Connec Connectt in Me Mes shed hed and Star-typ tar-type e Net Netwo works rks

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Cros Cross s Co Conn nne ect Int Intercon rconne nec cting ing Ring ing Ne Netw twor orks ks

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Cross Conn onnects in Submarine Head Ends

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Supervision of Quality of Service with Tandem Connection Monitoring 22 Concatenation Application for VC-4 - 4c

G ateway Applications Gat Gateway bet between SDH and and SONET ONET Ne Nettwork orks

23

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Gateway Ga teway Betwe Between en Ples Plesiochr iochronous onous and a nd Synchro ynchronous nous Network24 N etwork24

N etwork Element Applications Netw Net work Eleme lement nt for Grooming Grooming and Con Cons solidat olidation ion 3AL 69222 AAAA

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Network Element Element of Medium Size Size and Full VC-1 VC-12 2 Acces Access s 25

Pr i n ci p l es o f O p er a t i o n

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Interfaces

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System Extension and Upgrade

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Equipment Protection

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1 + 1 Equipment Protection

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1 : N Equipment Protection

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N etwork Protection


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Multiplex Section Protection

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Subnetwork Connection Protection

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System Management

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Cross Connection Management

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Configuration Management

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Performance Management

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Fault Management

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Security Management

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Alcatel Alcatel 1641/ 16 41/ 1664 166 4 SX SX 167 4 Lambda Gate Craft T Terminal erminal (CT) 35

N etwork Management System A r ch i tect u r e

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Cross Connect Matrix

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Cross Connect Control System

45

Architecture

45

Internal Communication System

47

Contr ol Interfaces

48

Redundancy Architecture

49

O perati ng Principles

49

NAU NA U and NU NUT TS Rack and and Subrac rack Layout out

50

G eneric Alcatel Common I/ O Shelf

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Introduction

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Functi onal Architecture

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Common I/ O Shelf Architecture

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O ptical Shelf Configurations Configur ations - ST STM-N Commo n Aspec Aspects ts

58

STM- 16 O ptical Interface

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61


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STM- 1 Electrical Interface

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Plesiochronous 2 Mbit/ s Interface

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Ples lesioc iochron hronou ous s 45 Mb Mbit it// s DS3 I/ O Part artsystem tem o t d e tt i m m o c s i l e t a c l A ,r e v e w o H . d e b ri c s e d t n e m p i u q e e h t


Clock G eneration and Distribution . e c ti o n t u o h ti w re u t u f e h t n i e d a m e b re o f re e h t

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Tasks67 Principle ple of Clock and Fram rame Dist istrib ribution ion Synchronization

Sour ces

O peration Modes

Eq u i p m en t Pr a cti ce

68 70 71

71

Racks71 Cabling

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Standard Rack Cabling Common I/ O

R ack Cabl ing

O ptical Inter -rack Cabling

74 74

Subracks

75

Station Alarm

75

Power Supply

75

Supply Voltage

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Power Distribution

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Ear thing

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Tech n i ca l Da ta Synchronous Interfaces

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O ptical STM-1 6 Interface

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O ptical STM-4 Interface

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O ptical STM-1 Interface

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Electrical STM-1 Interface

Plesiochronous Interfaces




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4 5 Mbit/ s DS3 Interface (R5)

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3 4 Mbit/ s Interface

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2 Mbit/ s Interface

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Clock Interface

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System Capacity

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Jitter and Wander

84

Equipment Practice

84

Environmental Conditions

85

Power Supply

85

Delay Times

85

Reliability

85

Protection

86

Electromagnetic Compatibility

86

Product Safety

86

A b b r evi a t i o n s

86

Gl o ssa r y

90

Rel a t ed Do cu m en ts

92

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Overview The Alcatel family of intelligent Optinex TM MultiService Gateway systems (OMSG) is designed for the real-time aspects of continuously developing networks. The ability to support a wide range of applications requested by network operators is a decisive decisive factor factor in t he design of t hese syst ems.

o t e l b a c il p p a y ll a r e n e g s i t n e m u c o d s i h t n i n o ti a m r o f n i e h T

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Within the OMSG family, the 4/1 Multiservice Metr o Gat eway Alc Alcat at el OptinexTM 1641 SX, in short 4/1 OMSG, considerably improves facility management, substantially reduces operational costs and offers new, efficient services in today's and tomorrow's network environment. This product provides real-time network control for network protection and re-routing and offers hubbing, grooming, traffic segregation and add-drop functions. functions. Moreov Moreover, er, it is equipped with ma ny other features promoting efficient use of interoffice and loc local dist ribu t ion ion facilities. facilities.


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Figure 1

Example of a Typical Network Structure

Figur e 1 illustr illustr at es an exam ple of of a typical typical net work work structure using the Alcatel Optinex TM 1641 SX as 4/(3/)1 OMSG and the 4/4 Multiservice Core Gateway and Cross Connect Alcatel Optinex TM 1664 SX as 4/4 OMSG. The main application areas are network nodes where a lot of traffic needs to be gathered, 3AL 69222 AAAA

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organ ized ized an d distr ibuted: i.e. i.e. in in n odes where r ings ar e int erconn erconn ected ected or h ubs of a ba ckbone kbone m eshed or hubbed network The Alcat Alcat el Optinex TM 1641 SX provides innovative services with high availability that utilize existing facilities while also making provision for network evolution. This document describes the features implemented in Release 6 of th e 4/1 4/1 OMSG. Feat ur es plan ned for for futu re releases releases are mar ked.

Ma in Featur es of Alcatel Alcatel Opti nex 16 1641 41 SX Rel Rel ea se 6 TM




The 4/1 OMSG Alcatel Optinex TM 1641 SX is a wideband Digital Cross Connect system that provides interfaces to standard line facilities and cross-connects virtual containers or collections of virtual containers complying with ITU-T Recommendation G.707 and ETSI/SONET requir ement s. It r eceiv eceives es th e inco incoming synchronous synchronous signals STM-N and processes them according to ITU-T and ETSI. The plesiochronous input signals are mapped to the corresponding virtual containers VC-4, VC-4, VC-3 an d VC-12.


The matrix of the 4/1 OMSG provides conn ection ection for for all cont cont ain er types m entioned.

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Figure 2 y a m s e g n a h C .t n e m p o l e v e d d n a h rc a e s re s u o u n ti n o c


SDH Multiplex Structure

The SDH multiplex structure illustrated in Figure 2, which is supported by the 4/1 OMSG, complies with the Recommendations ITU-T G.707 and ETS 300 147 R1. The 4/1 OMSG is divided into the following functiona l blocks: blocks: ¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

Cross Co Conn ect ect Ma tr ix Input /Output part systems systems for line line int erfaci erfacing ng • Dedic Dedicat ed I/O I/O part systems systems in in 600 600 mm deep deep racks

• ¾ ¾ ¾ ¾

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Comm Comm on I/O shelves shelves in 300 mm deep ra cks

Cloc Clock Gener at ion ion a nd Distr ibution Control.

Release 6 basic architecture is illustrated in Figure 3.

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Figure 3

TM Alcatel Optinex 1641 SX Release 6 Basic Architecture

General De Des sign and Operati onal Aspec Aspects ts All central partsystems, i.e. matrix, clock generation and distribution as well as control operate fully redundantly, i.e. they are (1+1) 3AL 69222 AAAA

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protected. All electrical I/O partsystems are designed for (1:N) equipment protection. protection. Line and equipment protection is provided for the optical I/O partsystems (1+1). As a result of implementing a new equipment pra ctice with with 300x600 300x600 mm ra cks in stea d of 600x600 600x600 mm racks for the line interfaces, the I/O density is improved in comparison to former Releases by factors from 4 to 8. This reduces the floorspace of th e system dr astically astically..





The partsystems are arranged in subracks (LMC matrix and Dedicated I/O) and Common I/O shelves. The subracks and shelves are housed in racks. The racks are mounted in rows with the possibi possibility lity of mu ltiple ra ck configur nfigur at ions. ions. With th e inter-rack optical cabling, the center row can be connected to an island a t a greater distance. distance.

Cr oss Con nect Ma tr ix The matrix is a non-blocking three-stage Clos ma tr ix from t he Alc Alcat el Lar Lar ge Matr ix Co Configur nfigur at ion ion (LMC) families, supporting unidirectional, bidirectional and broadcast connections. In the 4/1 OMSG Release 6, only one matrix family type is provided, the LMC960. LMC448 and LMC480 fam ilies ilies are supp ort ed. Within the LMC960 family, two versions are available: ¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

LMC960 with a s witchin g cap cap acity of 960 STM-1 STM-1 equivalent dat a st rea ms, co compr ising seven seven racks LMC384 with a s witchin g cap cap acity of 384 STM-1 STM-1 equivalent equivalent da ta stream s, co comprising thr ee racks.

End stage matrices which are not fully equipped may be extended hitlessly during operation to their full capa capa city.

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Line Inter face face The 4/1 OMSG provides interfaces to the following line signa signa ls: ¾ ¾ ¾ ¾

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¾ ¾ ¾ ¾



¾ ¾ ¾ ¾

STM-64 opt opt ical ical * STM-16 optical STM-4 optical STM-1 optical STM-1 elect elect rical 140 Mbit /s (R5) 45 Mbit/s / DS3 34 Mbit/s 2 Mbit/s Mbit/s 120 Ohm Ohm an d 75 Ohm 1.5 Mbit/s *

* plan ned for for fut ur e releases In Alcatel Optinex TM 1641 SX Release 6, the I/O partsystems deployed with the Alcatel 1641 SX Releases 4 and 5 are augmented by a set of Common I/O shelves. These I/O shelves are comm on for for th e Alc Alcat el Cross Conn Conn ect ect Systems an d TM the new generation Optinex MultiService Nodes (OMSN) Alcatel Optinex TM 1660 SM (Add/DropMultiplexer). The Common I/O shelves can be equipped for different types of plesiochronous and synchronous int erfaces (STM-1 (STM-1 to STM-16) STM-16).. It is compa compa tible wit h the LMC448 and LMC480 matrix families and, thus, easily allows line interface extensions of Alcatel Optinex TM 1641 SX systems already in the field.

Network Management Interfaces The 4/1 OMSG provides ¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

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Exter na l co cont rol inter faces to one one or m ore operat ion ion systems systems and/or and/or network network man agement systems (such a s t he Alcat Alcat el 1353 1353 family, includin g th e Alc Alcat at el 1353 1353 SH a nd Alcat Alcat el 1354 1354 RH ) Craft Term inal int erface erface Exter na l synchr synchr onizat ion ion inter faces faces t o the cloc clock system a nd vice vice versa versa . 14

Control System The 4/1 OMSG uses a hierarchically distributed pr ocessor ocessor syst em for cont cont rol.





Figure 4

External Control Interfaces

The 4/1 OMSG OMSG is co cont rolled rolled either by an Operat ion ion System (OS) or a Craft Terminal (CT) via the Q int erface. erface. The 4/1 OMSG is an integral part of the Alcatel SDH Network Management strategy. It can be controlled by the Element Manager (EM) Alcatel 1353 SH. Using the Alcatel 1354 RM, end-to-end mW connections in a mixed 4/1 OMSG/OMSN/ON/ network can be automatically set-up and the qua lity monitored. The EM work work sta tion ha s a window system bas ed on on HP OPENVIEW and provides a user-friendly graph ical ical int erface. erface. The follo following wing man agement fun ctions ar e available: ¾ ¾ ¾ ¾

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¾ ¾ ¾ ¾

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Cross Conn Conn ection ection Man agement Configuration Management Perform Perform ance Mana gement gement Fault Management Management Secur Secur ity Mana gement gement .

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The Alcatel 1641 SX Craft Terminal provides a subset of the EM functionality, focussed on single NE management, including installation and commissioning functions. The operational concept and graphical interface of the CT and EM are identical (f (for deta ils please refer t o the CT leaflet) leaflet)

Clock Generation and Distribution The Clock Generation and Distribution partsystem comprises the Master Clock Board (MCB), Clock Distribution Board (CDB) and Clock Reference Unit (CRU). The task is to distribute and supervise the clock and timing reference signals. The system clock can be synchronized to one of four 2.048 MHz tim ing referen referen ces in th e modes: o t e l b a c il p p a y ll a r e n e g s i t n e m u c o d s i h t n i n o ti a m r o f n i e h T


¾ ¾ ¾ ¾



¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

Automa tic choice choice Manual choice Free-running.

The clock system can be used in Synchronization Supply Unit (SSU) mode or in Synchronous Equipment Clock (SEC) mode, according to ITU-T Recommendations G.812/813.

Upgr ad e P Philos hilosophy ophy One of the primary philosophies behind the design of th e 4/1 4/1 OMSG is tha t t he system can be exten exten ded in both size (extensibility) and functionality (upgradability), according to customer needs and dema nds. The 4/1 4/1 OMSG ma tr ix an d line inter faces can be extended simply by adding hardware and sof softwa re a s needed. The software upgrade is hitless. For explan explan at ions, ions, please refer to th e Glossar Glossar y.

further

The 4/1 OMSG can be equipped with any type of Common I/O shelves from 2 Mbit/s to STM-16 both in ETSI and in SONET hierarchies. This enables the customer to tailor the system to his specific needs.

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Extensibility Racks and subracks may be partially or fully equipped, depending on the need. I/O modules (I/O boards, I/O subracks, shelves) may be added up to th e maxima l capa capa city of of th e mat rix. The matrix may be extended by adding matrix boards/subracks. The extension of a configuration within one release does not require any software modifications. The operation of the extensions cau ses no tr affic affic int err upt ion ion or hit s.

Upgradability





New features may be added to an existing configuration by installing a new release. A new release generally consists of new software and modified/additional hardware. However, the new sof softwa re is co compa tible with with existin existin g har dwar e.

Mai n Benefits Benefits for the Op erator In t he cont cont ext of oper at ions ions , the 4/1 OMSG pr ovides ¾ ¾ ¾ ¾

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Impr oved I/O fun fun ctionality Common I/O sh elves Higher I/O density Sma ller fo footpr int New feat feat ur es and applicat applicat ions ions

and from the aspect of logistics, taking the common feat ur es of th e 4/1 OMSG int int o acc accoun t, ¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

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Synergy in in spar es Ea se of of spare spare m an agement Ea se of of repa irs Reduction Reduction of of tr ain ing requiremen ts.

A new spare parts strategy is possible because the number of different shelves for line interfacing is reduced drastically. A combination of new equipmen t pra ctice (300 (300 mm depth , in ba ck-tok-to-back configuration) with the equipment practice of previous releases (600 mm depth ) is is possible possible and su pport pport ed.

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Ma jor Differ ences ences to Relea Relea se 5 Major changes in 4/1 OMSG Alcatel Optinex TM 1641 SX Release Release 6 with respect respect to Release Release 5 a re: ¾ ¾ ¾ ¾

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High Densit y Int erfaces erfaces (sync (synchr hr onous an d plesiochr plesiochr onous Comm Comm on I/Os) Monit Monit orin g the H igh Density Inter face signals signals after passing th e matr ix Integrated/native STM-4 ports STM-4 an d STM-16 with VC-4-4c C-4-4c Improved scalable control system Fa st E quipmen t P rotection rotection Switching Switching (EPS) fo for High Density Int erfaces erfaces MS-SPRing fun ct iona iona lity for for S TM-16 Fa st SNCP VC-4 C-4 for for High Densit y Int erfaces erfaces Fa st linear MSP (1+1) (1+1) co complying with ETSI/ITU, fo for synchr synchr onous H igh Density Interfaces Overhead Overhead J 0 and J 2 Byte Byte h andling fo for synchr synchr onous ports Tandem Connection Monitoring (TCM) New equipment pra ctice fo for H igh Density Int erfaces erfaces (300 (300 mm r acks) Fa st cold cold star t Colored lasers for interconnection with WDM equipment AU3/AU4 conversion for SONET-SDH interworking.

Applications OptinexTM MultiService Gateway systems are basically basically needed in flexib flexible le tr an sport sport net work work s. The unrestricted ability of the 4/1 MultiService Metro Gateway Alcatel Optinex TM 1641 SX (4/1 OMSG), Release 6, to perform cross-connections between all kinds of PDH (Plesiochronous Digital Hierarchy) and SDH (Synchronous Digital Hierarchy) ports ensures the highest flexibility and performance for all present and future networks, e.g. when used as a gateway between between t he hiera rchies. rchies. The 4/1 OMSG helps customers to migrate smoothly from a PDH to a SDH network. Quasi 3AL 69222 AAAA

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static networks with multiplexers and mechanical distribution frames can be upgraded to dynamic net work work s pr oviding viding fast fast rea ction tim es fo for cha nging traffic patterns (e.g. Leased Line Service). The 4/1 OMSG can be implemented in a wide range of network configurations, e.g. meshed, ring or hub configurations. The in-service extensibility of the 4/1 OMSG, by adding features and increasing capacity to up to 960 STM-1 equivalent ports, provides the network provide providerr with a fut ur e safe network network element element .



Powerful monitoring functions enable the current state of the network paths to be called in. All operations on the 4/1 OMSG can be controlled locally by means of a Craft Terminal (CT) or rem otely by means of the Oper at ion ion Syst em (OS). (OS). y a m s e g n a h C .t n e m p o l e v e d d n a h rc a e s re s u o u n ti n o c

Net work work protection protection meth ods guar an tee reliability of of services to customers. The 4/1 OMSG provides an extremely secure, highly available network with protection schemes such as Multiplex Section Protection (MSP) for STM-N interfaces or SubNetwork Connection Protection (SNCP) for all bit rates. Linear MSP complies with ITU-T Recommendations G.841 and G.783. The STM-16 Common I/O shelf also supports the Multiplex Section Shared Protection Rings (MS-SPRing).


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Network Applications Applications Cross Connect in Meshed and Star-type Networks Network nodes in meshed networks and in the starpoint of star-type networks are characterized by links t o more t ha n t wo oth er n odes. The The a pplicat pplicat ion ion of the 4/1 OMSG in these network topologies requires a capacity large enough for future expansion of the network node. This is provided by 4/1 OMSG.

Cr oss oss Conn ect ect I nter conn ecti ecti ng Rin g N etwor k s




Ring network elements, such as Optinex TM MultiService Nodes (OMSN), are optimized for ring protection functionality and are restricted with regar d to th eir groomin groomin g capa capa bility. bility. . e c ti o n t u o h ti w re u t u f e h t n i e d a m e b re o f re e h t

SNCP NCP:: MS-S MS-SP PRing: ing : OMSN: OMSN: O MSG: MSG:

Subnetw ubnetwork ork Connec Connection tion Protec rotection tion Multiplex Multi plex Section ection Shar Shared ed Protection Ring Optinex Optinex MultiS MultiServ ervic ice e Node (Add/ Add/ Drop Multiple Multiplex xer) er) O ptinex ptinex MultiService ervice Gateway Gateway (Cross (Cross Connect Connect))

Figure 5

Ring Network Cross-connection Cross-connection

A Cross Connect system between the ring coupling nodes ensures a full grooming and consolidation capability and, therefore, an efficient use of the bandwidth in the transport network. The advantage is high flexibility through non-blocking cross-connection between different rings and in service service up grade. A second application of the 4/1 OMSG in ring 3AL 69222 AAAA

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configur nfigur at ions ions is th e Dua l Node Co Coupling, ensur ing a high network availability by providing different tr ansm issio ission pa ths between between two rings.





Figure 6

Failure Management by Dual Node Coupling

If lo locat ed at two diff different mesh point point s between t wo rings, the 4/1 OMSG supports the drop-andcontinue function. In this application, the SNCP selectors route signals in such a way that it is not possible for any combination of simultaneous failur es on on ea ch r ing to cau cau se tr affic affic int err upt ion. ion.

Cross Connects in Submarine Head Ends Due to the increase in international traffic, many subm ar ine net work work s ha ve recent recent ly been been deployed deployed or or are under construction. These networks carry large amounts of traffic which need to be distributed at the network landing points. For these applications, the Cross Connect is the optimal network element. It provides the capacity to groom and consolidate traffic at each landing station. This is even more important because fiber capacities in these submarine networks are scarce resources, and their us e needs to be cont cont rolled effic efficient ient ly.

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Super vision vision of Qua lity of Service with Tan Tan dem Connection onnection Moni tori ng All cross-connected signals can be monitored by connection supervision functions, i.e. Low-order Path Overhead Monitoring (LPOM) at 2 Mbit/s on th e signal signal tra nsmit side. The Tandem Connection Monitoring (TCM) completes the end-to-end quality supervision of a signal by the parity bits (BIP) in the container. TCM supervises a VC on its way through a su bnet work work . It is possible to super vise a section section of a path which runs through the area of several diff different net work work opera tors.





Figure 7

TCM for Path Performance Supervision Supervision

A network operator can thus ensure Quality of Service Service par am eters specified specified fo for h is network pa rt . The Network Network Management resets t he TCM co count er (N1 Byte) Byte) at t he ent ry point point of th e pat h t o a specific specific subnetwork. The parity is recalculated in every network element. In the case of a failure the amount of failures is inserted/added in/to the corresponding byte. At the exit point of the specific 3AL 69222 AAAA

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subnetwork, the information of the TCM counter is transferred to the Network Management (OS of specific subnetwork). This information can be used to detec detectt a failure in a subnetwork subnetwork pa rt of a pa th .

Concatena oncatena tion Appl icati icati on for VC VC-- 4- 4c Now that the data industry is beginning to put transmission functionality in traditional data networking equipment, e.g. IP-routers which have VC-4-4c interfaces, there is a demand for greater efficiency by increasing the capacity of the "bitpipe" offered to these network users. This applicat applicat ion ion is supported by th e 4/1 OMSG OMSG Release 6 with the possibility for flexible 622 Mbit/s Gbit/s conn ections ections th rough ha ndling co concaten at ed signa signa ls. o t e l b a c il p p a y ll a r e n e g s i t n e m u c o d s i h t n i n o ti a m r o f n i e h T




Figure 8

VC-4-4c Concatenation Concatenation

In the case of VC-4-4c, virtual VC-4 containers are joined to make one high capacity VC. This high capacity VC is managed as a single VC within the cross-c ross-conn ect ect an d in th e net work work cont ext.

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Gateway App lications lications Gateway between SDH and SONET Networks A Cross Connect system supporting both SONET and SDH mapping schemes serves as a gateway between both worlds. worlds.





SDH SO NE NET T STM-N OC-M

Figure 9

Synchrono nchronous us Digital Digital Hierarc Hierarchy hy Sync ynchronous O ptical ptical Netw Network ork Synchronous ynchronous Transport Module - Level evel N Optical Optical Con Conta taine inerr - Level M

Gateway between SDH and SONET Networks

The Cross Connect is capable of connecting the SONE T world world a t t he OC-3 OC-3 level level and t he SDH world world at the STM-1 level.

Gateway Between Plesiochronous and Synchronous Network Due to its large cross-connecting capability, the Cross Connect can be applied as a PDH-SDH gateway where a large amount of traffic is concent concent r at ed (e.g. (e.g. lar ge exc excha nges).

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Figure 10 o t e l b a c il p p a y ll a r e n e g s i t n e m u c o d s i h t n i n o ti a m r o f n i e h T




Gateway Between Plesiochronous Plesiochronous and Synchronous Networks

N etwork Element Appli cations Network Element for Grooming and Consolidati onsolidati on A Cross Connect in SDH networks provides traffic grooming and consolidation functionalities. Grooming is the reorganization of incoming traffic from different links that are destined for one destination to links which are assigned to this tr affic affic destina tion. Consolidation means reorganizing traffic from lightly loaded links onto fewer, more heavily loaded links to increase system fill and equipment utilization.

N etwor k Elem ent o f Med ium Size an d Full Full VC VC-- 12 Acc Access ess For network elements with just a few STM-16 interfaces or higher and complete VC-12 access, the total system capacity may easily exceed the size of network network elements elements with a restr icted icted system capacity. apacity. In th ese cases, cases, th e Cross Conn Conn ect ect is able to perform perform the required functionality with full flexibility and extensibility. In contrast to the Cross Connect, a conglomeration of small sized network elements which are connected via cables would be very inflexi inflexible ble an d rest rictive. rictive.

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Pr in cip les of Oper ati on Interfaces The following interfaces are provided by the 4/1 MultiService Metro Gateway Alcatel Optinex TM 1641 S X (4/1 (4/1 OMSG): ¾ ¾ ¾ ¾

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¾ ¾ ¾ ¾

¾ ¾ ¾ ¾




Synchr Synchr onous a nd plesioc plesiochr onous onous tr an smission smission int erfaces erfaces t o digita digita l cross cross conn conn ect ect systems, t o plesioc plesiochr onous a nd synchr synchr onous m ult iplexers iplexers Exter na l synchr synchr onizat ion ion inter faces faces t o the cloc clock system a nd vice vice versa Int erfaces erfaces to loc local or rem ote Cr aft Term inals Exter na l co cont rol inter faces to one one or m ore operat ion ion systems systems and/or and/or network network man agement systems (such as the Alcatel 1353 family).

Figure 11 illustrates the interfaces between the 4/1 OMSG an d th e system system environm environm ent.


Figure 11

TM Interfaces of the 4/1 OMSG Alcatel Optinex 1641 SX

System ystem Extens Extension ion an d Up gr ad e New 4/1 OMSGs are only deployed with Release 6 hardware. Matrix and I/O upgrades are hitless with in Release Release 6. 3AL 69222 AAAA

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Starting with an 4/1 OMSG Release 5 system, it is possible to add the new Release 6 I/Os to the existing I/O partsystems thus upgrading it to Release 6. The Shelf Controllers (SC) of the new Common I/O shelves have to be connected to the LAN switches of the internal control communication system, the GTI interfaces to free port port s of of th e end sta ges of of th e LMC mat rix. The new Common I/O racks can be installed in a multiple row configuration as it is already supported for Release 5 racks. A mixture of existing and new har dware can can t hus be operated. operated. The In Service Service Upgra de from from Release 5 t o Rele Release ase 6 for softwar softwar e is su pported.




An upgra de from from LMC480 LMC480 t o LMC960 LMC960 is supported. An upgrade from LMC448 and LMC384 to LMC960 is not not su pport pport ed. . e c ti o n t u o h ti w re u t u f e h t n i e d a m e b re o f re e h t

Prerequisites for an upgrade from Release 5 to Release Release 6 ar e: ¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

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Upgra de from from th e LMC224 LMC224 ma tr ix type su pport ed in Relea se 5 to LMC448 (no (no LMC224 and square m at rices rices are supported in Release Release 6). The Administra Administra tive Unit must be an NAU with with a LAN switch switch in th e inter na l LAN LAN backbone. backbone. The upgrade of of the Administra Administra tive Unit has t o be perform perform ed in Release 5.

27

Equipment Protection To protect the 4/1 OMSG network element from single failur failur es of of eequipmen quipmen t par ts which which would lead to traffic interruptions on the affected crossconnection, the 4/1 OMSG partsystems operate with r edundancy. edundancy. All central partsystems, such as Control, Matrix and Clock Generation and Distribution, are fully redu nda nt , i.e. i.e. they ar e (1+1 (1+1)) protected. protected. All electrical I/O partsystems are designed for (1:N) protection. For the optical I/O partsystems, (1+1) protection is provided. o t e l b a c il p p a y ll a r e n e g s i t n e m u c o d s i h t n i n o ti a m r o f n i e h T



1+ 1 E Equ qu ip men t Protectio Protectio n . e c ti o n t u o h ti w re u t u f e h t n i e d a m e b re o f re e h t

Figure 12

(1+1) Equipment Protection Scheme

The protection scheme (1+1) implies that for every working equipment or partsystem, there is an additional one running parallel to which the traffic is broadcast. In the event of a failure, e.g. of Equipment 1, the traffic is switched to the redundant equipme equipment. nt.

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1:N Equip ment Prot ection ection In this case, N working equipment are protected by one redun dant equipment equipment . In th e event event of a failure e.g. of Equipment 1, the traffic is switched to the redundant Equipment P. In the case of the 4/1 OMSG, this protection scheme is used for the electr electr ical ical I/O part systems.





Figure 13

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(1:N) Equipment Protection Scheme

29

Network Protection Diffe Differen ren t n etwork pr otection tection schemes ar e supported by the 4/1 OMSG. They are described in the following Chapters 3.4.1 (Multiplex Section Protection) and 3.4.2 (Subnetwork Connection Protection). An overview of the switching performance for different interface types is shown in Table 1. I n t er f a ce Typ e



STM- 16 STM-4 STM- 1 optical STM-1 M- 1 electrical Plesiochronous y a m s e g n a h C .t n e m p o l e v e d d n a h rc a e s re s u o u n ti n o c


* **

Si n g l e- en en d ed M SP

Du a l - en en d e d M SP

< 50 ms < 50 ms -

SN CP CP

VC12: < 50 ms

M S- SP SPRi n g

<

5 0 ms

VC4: < 50 ms* < 50 ms < 50 ms -

*s * VC4/3/ 1: < 3 ** <

-

3 s

within Common I/O I/ O shelf in the system Table 1

Network Protection Switching Performance Values

Mul tip lex Sec Secti ti on Protection A Multiplex Section Protection (MSP) configuration consists of the broadcast, called bridging, of a VC-4 to two separate multiplex sections in the transmit direction and a selector function in the receive direction. The selection of one of the two received signals is perform perform ed acco accordin g to th e signal qua lity and the MSP protocol in the counter direction if available. The two sec sections tions h ave to be be term inated in th e same subrack.

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Protection scheme 1+ 1 (single-ended MSP) Broadcast signa signall at at A Select MS-signal at B




Protection scheme scheme 1: n (dual-ended (dual- ended MSP MSP) (n = 1, 1 , 2 , 3, 3 , ...) . ..) 1. Send end n signals on n working working links at A 2. Evaluate aluate MS signal at B 3. Report signal state to A via K1/ K2 bytes bytes 4. If one of the the signals is not good, switc switch h at A to protection protection link 5. Late ater, roll roll bac back


Figure 14

Multiplex Section Protection (MSP)

S i n g l e -e -e n d e d M S P

In single-ended protection mode, switching is un idirectiona l. The selection of one of th e t wo VC-4 VC-4 signals occurs independently for each direction of th e bidirectional bidirectional signa l. There is no co comm un icat icat ion ion between t he selector selector functions. functions. The signa l from from t he redundant route is selected with the help of a protection function within the I/O STM-N partsystem. There is no automatic restoring because each route has the same priority. If a failure is detected in the section currently active, the redundant route is selected selected an d t hen beco becomes t he a ctive section. section. D u a l --ee n d e d L i n e a r M S P

In dual-ended protection mode, switching is bidirectional. When the signal received from the work work ing rout e in one direction direction is det ected ected a s bad, a switch is performed with the help of a protection function within the I/O partsystem. In the counter direction, direction, the switch switch is reported by t he K1/K2 bytes bytes 3AL 69222 AAAA

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in the Section Overhead (SOH) of the transmitted synchronous signal to the far end receiver. As a result, this receiver also switches to the redundant route. 2 -f -f i b e r M S -S -S P R i n g

The 2-fiber MS-SPRing protection mode is provided for a ring configuration of Network Elements (NE) with at least two bidirec bidirectional tional STM-16 STM-16 port port s.





Figure 15

Multiplex Section Shared Protection Ring (MS-SPRing)

The NEs are connected in a ring by means of two optical fibers, one for the clockwise direction and the other for counter-clockwise. The entire VC-4 transmission capacity is divided into one half working VC-4s and one half protection VC-4s. The protection capacity may be used for low priority tr affic affic which is lost in case of failu failu re (extr a t ra ffic ffic). ). MS-SPRing is performed by sending the VC-4 on th e work work ing out out put . In th e case case of a failure, th e VCVC3AL 69222 AAAA

32

4 is switched switched to th e protectin protectin g out out put in th e co coun ter direction. Swit chin g is cont cont rolled by K1/K2 pr ot ocol and performed in less than 50 ms. If the working path is restored, the VC-4 is switched back au tomat ically ically (revert (revert ive mode). mode).

Subnetwork Connection Protection A Subnetwork Connection Protection (SNCP) configuration consists of the broadcast of one VC of a plesioc plesiochr onous signa signa l to two separ separ at e pat hs in t he transmission direction and a selector function in t he r eceive eceive direction. direction. Th e selection selection of one of of th e t wo received signals is performed according to the signal quality.





Figure 16

Subnetwork Connection Protection

The protection mode is single-ended (unidirectional) switching. The selection of one of the two connections occurs independently for each direction of the bidirectional signal. There is no comm un icat icat ion ion between t he selector selector fun ctions. There is no automatic restoring because each route has the same priority. If a failure is detected in the route currently active, the redundant route is selected selected a nd t hen beco becomes t he a ctive route.

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System ystem Ma na gem ent The 4/1 OSMG can can be accessed accessed by th e user ¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

Fr om a net work work m ana gement gement system (Regio (Regiona na l Man ager Alc Alcat el 1354RM, Element Man ager Alc Alcat el 1353 SH) Fr om a loc local or r emote CT.

The general system ma nagement functions, unctions, such as DCC routing and remote inventory of each replaceable unit, are supported. The element management layer services supported by the Craft Terminal (CT) described in Section 3.5.6 correspond to the functional areas defined in ITU -T M.3010 Reco Recomm enda tions a nd compr compr ise of of o t e l b a c il p p a y ll a r e n e g s i t n e m u c o d s i h t n i n o ti a m r o f n i e h T



¾ ¾ ¾ ¾


¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

Cross Conn Conn ection ection Man agement Configuration Management Perform Perform ance Mana gement gement Fault Management Management Secur Secur ity Mana gement gement .

Cr oss oss Conn ecti ecti on Ma na gem ent The path configurat nfigurat ion ion m ana gement gement deals with with t he crea tion, modif modificat icat ion ion an d clear clear ing of ter mina ted or non-terminated paths within a managed network. This task is part of the Alcatel 1354 RM Regional Man ager. This SDH Regio Regiona na l Mana ger provides provides th e facilities for end-to-end connection management in an SDH network. Functions such as path creation or path scheduled operation are included in the manager.

Configur ation Ma nagement Configuration Management comprises all the tasks required to configure and reconfigure the equipment and the transmission functionality of t he 4/1 OMSG. All All cross-c cross-conn ections ections ar e configur configur ed according to the switching commands received from th e operat operat or.

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Perform ance ance Ma nagement The 4/1 OMSG provides configurable monitoring of signals at its interfaces. Performance data is collected and stored to maintain the performance data history and statistics. Events are collected and filtered based on ITU-T Recommendation G.826 (Ed. 97).

Fault Mana gement Appropriate alarms, status indications and alarm records are generated in case of failures. Alarms are received from the equipment, transmission functions and other applications, such as Security Management. o t e l b a c il p p a y ll a r e n e g s i t n e m u c o d s i h t n i n o ti a m r o f n i e h T




Detection capabilities are provided and fault corrections are started, e.g. reconfiguration or au toma tic switching switching to redun dan t devices. devices.

Securi ecuri ty Ma nag ement The system is protected una uth orized rized users.

against

misuse

by

Secur Secur ity relat ed event event s ar e reco recorded. Administrative functions, such as those listed below, below, ar e perform perform ed by th e secur secur ity man agement : ¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

Sett ing of passwords User list User profile profiless with access access right s User an d activity activity log log Aut hent ific ificat at ion ion of user s by na me an d password Session Session m an agement with a ut oma tic lo logoff goff..

Alcat Alcat el 1641/ 1664 SX SX 1674 Lam Lam bd a Ga te Cra Cra ft Term Term in al (CT (CT) The CT consists of a workstation, Operation And Maintenance software (OAM), application software and additional devices, such as printers and tape drives. It is conn conn ected ected t o th e Administ Administ ra tive Unit. It provides full access to all features implemented in the 4/1 OMSG and 4/4 MultiService Core Gateway and Cross Connect Alcatel Optinex TM 1664 SX (4/4 OMSG) respectly 1674 Lambda Gate 3AL 69222 AAAA

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to the operat or. The CT provides advant ages, such such a s ¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

operators

with

numerous

Maintenance operation Flexibility an d ease of oper at ion ion Powerful Powerful element ma int ena nce servic services es Comm Comm on look look a nd feel of of CT an d net wor wor k ma nagement system Alc Alcat at el 135 1353 3 SH t erminal.

Ten remote or local CTs may be connected to one 4/1 OMSG, but only one of them may be active. Commands, requests and retrievals are distributed to the appropriate equipment equipment . o t e l b a c il p p a y ll a r e n e g s i t n e m u c o d s i h t n i n o ti a m r o f n i e h T




Figure 17

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Graphical User Interface

36

The Graphical User Interface (GUI) is a standardized, multi-window, color, graphical int erface. erface. It is based on X.11 X.11 and H P OpenView. OpenView. Commands and information requests are entered via the keyboard or mouse. Ergonomic design enables operators to execute its task efficiently. User-friendliness is a key issue in the development of the GUI. For example, visual presentation of all available cross-connections allows easy control and super visio vision of the net work work element 4/1 4/1 OMSG. A context sensitive online help system on a hypertext base supports the operator where necessary. Automatic system restart is carried out after power failur e or or process process crash . o t e l b a c il p p a y ll a r e n e g s i t n e m u c o d s i h t n i n o ti a m r o f n i e h T




A restart or power down of a CT does not affect the opera bility of of th e 4/1 4/1 OMSG.

Network Netwo rk Management The 4/1 OMSG is typically deployed in a Network Release Release cont cont ext an d is thu s ma na ged by by the Alcat Alcat el network management systems. For reasons of controllability of the network element in case of a failure of the control network, it is possible to manage the 4/1 OMSG as a stand alone network element which is done by the Alcatel 1641/1664 SX Craft Terminal (CT) an d described in Section Section 3.5.6. 3.5.6. Embedding of the 4/1 OMSG in the Alcatel management system according to the Network Releases Releases is illustr illustr at ed in Figure 18.

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Figure 18

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Embedding fo the Craft Terminal and OMSG in the Network Management System

38

System ystem Ar ch it ectur ectur e Cr oss Con n ect ect Ma tr ix The Matr ix par par tsystem is the cent cent ral par t of th e 4/1 4/1 Multiser vice vice Metr o Gateway Alcat Alcat el Optinex TM 1641 SX (4/1 OMSG). Two identical copies of matrices are connected to the I/O interfaces and perform cross-connections of the VCs. One input and one output of the matrix is called a matrix port. The format of the signals between the I/O and the matrix ports is the Alcatel standardized signal format for internal interfaces called Generic Transport Interface (GTI). It is similar to the STM1 format. The size of the matrix is defined by the nu mber of STMSTM-1 equivalent port s. o t e l b a c il p p a y ll a r e n e g s i t n e m u c o d s i h t n i n o ti a m r o f n i e h T




Figure 19

Matrix Interfaces

The matrix only receives and transmits signals in GTI format. The incoming signals are mapped or converted into GTI on the plesiochronous and synchr synchr onous I/O boar boar ds or t he Common I /O shelves. shelves. The GTI frame is based on the STM-1 frame specified by ITU-T Recommendation G.707. It enables the transport of all signals of the US hierarchy and ETSI hierarchy levels 1 to 4 (1.5 3AL 69222 AAAA

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Mbit/s to 140 140 Mbit/s) ma pped to Virt Virt ua l Cont Cont ain ers (VC). The VCs are sent from the I/O boards or Common I/O shelves to both copies of the Matrix (A and B) via the GTI. The matrix performs the crossconnection on the VC-4, VC-3 or VC-12 level and sends the VCs to the relevant I/O boards or Common I/O shelves via GTI. The configuration of both matrix copies is always identical. On the I/O boards or Common I/O shelf, one GTI signal is selected selected from Copy A or Copy B, based on qu alit y. The m at rix su pport pport s t he follo following wing co conn ection ection t ypes: ¾ ¾ ¾ ¾

¾ ¾ ¾ ¾



¾ ¾ ¾ ¾


Unidirectional Bidirectional Broadcast.

Comp Comp lex cross-c cross-co onn ections, ections, s uch as


¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

Pr otected Broadcast Drop & Inser t Drop & Co Cont inue

are supported via combining unidirectional, bidirectional, SNCP and broadcast crossconnections. The quality of a connection is supervised with the help of identifiers which are inserted into the VCs on t he inpu t port s. The ident ident ifiers ifiers received received from from t he ma tr ix on t he outpu outpu t ports a re co compar ed with with th ose expec expected. In case of of a misma tch, th e signa signa l from from t he other matrix copy is selected. A parity bit is also us ed to check check th e qua lity of of th e connection. connection. In order to achieve a maximum size, the matrix is configured in a three stage Clos structure called Large Matrix Configuration (LMC). It is nonblocking for unidirectional and bidirectional connections. The Clos network of the LMC consists of an input stage, a center stage and an output stage. Input and output stages perform space and time switching and are also called end stages. The central stage simply performs space switching. The LMC uses a hitless rearrangement procedure for th e Clos Clos net work work . In the 4/1 OMSG Release 6, only the LMC960 matrix family type is provided, the full version 3AL 69222 AAAA

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LMC960 with a switching capacity of 960, the par tia l version version LMC384 LMC384 with 384 STM-1 STM-1 equivalent data streams. LMC448 and LMC480 families are supported. With t he expan sion sion r at io of 24x3 24x32, 2, together together with an increased cross-connecting capability of 960 STM-1 equivalents, th e LMC960 LMC960 mat rix provides provides impr oved FF P an d broadcast broadcast capability. apability. Mecha Mecha nically, nically, th e LMC960 LMC960 is implement ed in h ighcapacity double subracks. An Hi-cap End Stage Subrack (HESS) comprises two rows of End stage Matrix Boards with 32 ports (EXB32), an Hi-cap Center Stage Subrack (HCSS) comprises two rows of Center stage Matrix Boards with 40 ports (CXB40). o t e l b a c il p p a y ll a r e n e g s i t n e m u c o d s i h t n i n o ti a m r o f n i e h T




EXB CXB

End stage Matrix Board Center stage Matrix Board

Figure 20

LMC960 Configuration with 960 Ports

Matrix partsystem redundancy is duplication (Copy A and Copy B).

achieved

by

The following figure depicts the rack layout of the full m at rix version version LMC960. LMC960. 3AL 69222 AAAA

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HCSS HCSS HES HE SS o t e l b a c il p p a y ll a r e n e g s i t n e m u c o d s i h t n i n o ti a m r o f n i e h T


Centerr Stage Subrack Cente ubrack End Stage Subrack

Figure 21 y a m s e g n a h C .t n e m p o l e v e d d n a h rc a e s re s u o u n ti n o c

LMC960, Rack Layout


EXB CXB

End stage Matrix Board Center stage Matrix Board

Figure 22

LMC384 Configuration with 384 Ports

The following figure depicts the rack layout of the matrix version LMC384. Only three racks are requir ed fo for full redu nda ncy. ncy.

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HCSS HESS y a m s e g n a h C .t n e m p o l e v e d d n a h rc a e s re s u o u n ti n o c


Center Stage Subrac rack End Stage Subrac rack

Figure 23

LMC384, Rack Layout

The following figures depict the subrack layout of th e ma tr ix fam ily LMC960. LMC960.

Figure 24

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LMC960, Center Stage Subrack HCSS

43





Figure 25

LMC960, End Stage Subrack HESS

Clock Distribution Boards (CDB, part of the Clock Generation and Distribution partsystem) and Sat ellite ellite Pr ocessor essor Boar Boar ds (SPB, part of the Contr ol partsystem) are shared by all units in the double subrack. The center stage must be fully equipped corresponding to the final matrix size. The End stage Matrix Boards EXB32 with 32 ports can be added up t o th e planned ma ximum ximum mat rix capaci capacity. ty. Extensions by adding more EXB32s within the LMC960 LMC960 family are hitless. The possibility of an In Service Upgrade from LMC384 to the full LMC960 matrix is planned for fut ur e releases. Both LMC960 versions support fast SNCP (FFP) at VC-12 VC-12 level level in 50 ms .

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Cross Connect Control System Architecture The 4/1 OMSG uses a hierarchical distributed processor system for control, the Control partsystem. ¾ ¾ ¾ ¾




Administ ra tive Un it (AU) Cont Cont rol Level Level The cent cent ra l processo processor, r, Administr at ive Un it AU, hosts a ll applicat applicat ion ion a nd config configur ur at ion ion softwa softwa re an d is the m ain pr ocessing and cont cont rol element element of t he 4/1 OMSG. The applicat ion ion softwa softwa re comp comp rises th e int ern al Alcat Alcat el Info Mo Model int erface erface which ena bles connection connection of t he 4/1 OMSG to th e OSspecifi specificc application s oftwa re. Th e AU provides a non-vo non-volat ile ile m emory st ora ge system for all system system data .


¾ ¾ ¾ ¾

Sa tellit e Pr ocessor ocessor (SP) / Sh elf Cont Cont roller (SC) Cont Cont rol Level The seco second st age of of the Contr ol par tsyst em consist s of of t he SP s co cont rolling th e double double subracks of of th e Matrix part system system a nd Dedic Dedicat ed I/O I/O par tsystems a nd t he SCs contr olling th e Comm Comm on I/O shelves.

¾ ¾ ¾ ¾

User Board (UB) Control Level (in Matrix part system system and Dedic Dedicat at ed I/O I/O par tsystems) The th ird sta ge is the UB co compr ising UB Pr ocessing Element (UBPE) with with da ta pr ocessin g or or UB Acc Access E lemen t (UBAE) (UBAE) without data processing

To protect the internal data communication, all links and processi processing ng element element s ar e redunda nt . Figure 26 illustrates the control system architecture together with the system internal comm un icat icat ion ion system .

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EC N AU N CC NUTS NUTS

Equipment Controller N ew Administrative Unit N ew Communication Controller New Ne w Utili Utility ty Subrac ubrack k

Figure 26

SC SPB UB

Shelf Controller Satellite Processor Board User Board

Control System Reference Architecture and Communication Communication System

The New Administrative Unit (NAU) is the central processing element of the 4/1 OMSG Control part system. system. All All relevant relevant data is stored stored in t he NAU. The external interfaces to the CT, OS etc. are term inat ed and han dled dled in in th e NAU. NAU. The NAU computer system is based on SPARC architecture with Solaris as the operating system. HDisks are used for system and application data. The NAU is provided in a separate subrack in a standard industrial housing, has its own power supply, forced cooling and overheating security mechanism. 3AL 69222 AAAA

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The NAU is connected via a system internal LAN backbone: ¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

Through redunda nt New Comm Comm unication unication Cont Cont rollers rollers (NCC) lo locat ed in t he N ew Utility Subr ack (NUTS) (NUTS) to th e Matr ix an d Dedic Dedicat ed I/O double double subr acks co cont ainin g Sat ellite ellite Processor Boards (SPB) and User Boards (UB). To the S helf Cont Cont rollers (SC) of of th e Comm Comm on I /O shelves.

The NCC handles the protocols used for the comm un icat icat ion ion toward s the NAU and SPBs. The SPBs control and monitor the UBs of their associat associat ed double subr ack. o t e l b a c il p p a y ll a r e n e g s i t n e m u c o d s i h t n i n o ti a m r o f n i e h T




The UBPEs or UBAEs are located directly on the UBs. They perform the access of the Control partsystem to the on-board transmission and switching relat ed circuitries. circuitries. The SC performs the control functions of the Common I/O shelves. It has redundant 10BaseT int erfaces erfaces for for comm un icat icat ion ion with th e NAU. The EC han dles dles th e Data Comm Comm unication unication Chann els els (DCC) an d per form s DCC rout ing.

Inter nal Comm unication System ystem A LAN backbone is introduced in 4/1 OMSG, Release 6, as an internal communication system. It is established with standard LAN Switches which ar e ma naged and supervised supervised remotely remotely by the NAU (see Figur e 27). 27). The LAN LAN switches ar e setup from th e modules ¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

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IEE E802.3 LA LAN ports Switch Engine as switching unit Management Management u nit.

47




N AU AU Common Common I/O LAN LS Mgt NCC NC C SC


N ew ew Administrative Unit Generi Generic c Alca Alcate tell Common Input Input// O utput utput Local Area N etwork LAN Swi tch Management New Ne w Communica ication Controll oller Shelf Controller

Figure 27

LAN Switches in the LAN Backbone

A large number of SPBs and Common I/O shelves with t heir SCs can t hu s be co conn ected ected t o th e NAU. NAU. For redundancy reasons, the LAN backbone is split into two copies. Each copy is established with separ at e and in dependent LAN switch devic devices. es. With the introduction of the LAN switches, the redu nda ncy concept is enh enh an ced due to the fact fact t ha t both NAUs can directly access each NCC and SC within th e system. system.

Contr ol I nter faces faces The follo following wing contr contr ol int erfaces ar e availa ble: ¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

3AL 69222 AAAA

Exter na l co comm un icat icat ion ion LAN LAN in ter face face for for connecting the local/remote EM V.24/V V.24/V.28 .28 int erface for for conn ectin ectin g t he ma intenan ce equipment equipment Q int erface for for co cont rol by an OS or CT Man agement inform inform at ion ion via DCC with full support of Int erm ediate System(IS)System(IS)-IS an d End 48

System(ES)-IS System(ES)-IS r out ing.

Redun da ncy Architecture ¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾





The NAUs, the LAN LAN switches, th e SCs and t he SPs a re du plicat plicat ed. The The UB is not du plicat plicat ed. It is pr otected otected by a specific specific UB pr ot ect ect ion ion s cheme. Ea ch SP h as t wo comm un icat icat ion ion int erfaces erfaces to th e redunda nt NCCs. Each NCC is co connected nnected t o th e LAN LAN backbone. backbone. Ea ch SC ha s redunda nt LAN LAN int erface erfacess with th e LAN LAN backbone. backbone. Ea ch U B has t wo comm un icat icat ion ion int erfaces erfaces to th e associat associat ed SPs. E ach int erface erface is conn conn ected ected to a different different associat associat ed SP.

Operati ng Prin ciples The structure provided enables a single point of failure to occur, without loosing the capability of accessing accessing an operat iona iona l UB or or SC from from a n exter na l int erface, e.g. e.g. OS. The NAU computer system is composed of two identical NAU computers. The redundancy scheme of the NAU computers is 1:1. The run-time data is au tomatically tomatically updat ed between between both both th e active active an d th e ina ctive NAU co compu ter . There is n o lo loss of dat a in t he case of of protectio protection n switching switching (either ma nu ally or au toma tically) tically).. The redundancy scheme of the two SPs in a double subr ack config configur ur at ion ion is 1+1. The passive SP is operational, i.e. the application softwa softwa re is loaded a nd t he SP performs cyclic cyclic access access tests to the UBs (polling). This access is carried out to verify the accessibility of all UBs in subracks A an d B. The pass ive ive SP is not involve involved d in th e co cont rol of the UBs in the associated double subrack. This provides the possibility of taking one SP out of service and unplugging the SP board, while the active SP contin ues t o pr ovide service service fo for a ll UBs. The redundancy of both SPBs is managed completely by the NAU which is responsible for au tomat ically ically selec selectin tin g the a ctive SP. The AU-SP, AU-SC and SP-UBPE communication 3AL 69222 AAAA

49

links are based on standard data transmission protocols which guarantee a reliable message transfer.

N AU an d N UTS UTS Rack a nd Sub ra ck Layout Figure 28 ill illustr ustr at es th e layo layout of the NUTS an d an example of a rack face layout of a rack housing NAU and NUTS. The NUTS houses the NCC boards and also reserves slots for boards known from the Small AU in previous Releases. The MCB is located located h ere, for for exa mp le.





Figure 28

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NUTS Layout and NAU/NUTS Rack Layout

50

Generic Alcatel Common I/O Shelf Introduction Flexible Generic Alcatel Common I/O shelves are introduced in the 4/1 OMSG, Release 6. Up to 64 STM-1 equivalents can be processed. It may be opera ted in a m ixed ixed environmen environmen t, so th at Dedicat Dedicat ed I/O partsystems of earlier 4/1 OMSG Releases and the Common I/O shelves can be connected to the same LMC matr ix. ix. The Common I/O shelves implements new fun ctionalities in t he 4/1 4/1 OMSG, such as in tegra ted STM-4 ports, MS-SPRing functionality, overhead J2-Byte handling in synchronous ports and Tandem Conn Conn ection ection Monit Monit orin g (TCM). (TCM). o t e l b a c il p p a y ll a r e n e g s i t n e m u c o d s i h t n i n o ti a m r o f n i e h T



The follo following wing int erfaces ar e provided: . e c ti o n t u o h ti w re u t u f e h t n i e d a m e b re o f re e h t

L i n e I n t e r f a c e s P r o v id i d e d v i a A cc cc e s s a n d P o r t B o a r d s (see (see F igure 29) ¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

1.5 Mbit/s

*

2 Mbit/s 120 Ohm/75 Ohm 34 Mbit/s 45 Mbit/s * 140 Mbit/s * STM-1 elect elect rical STM-1 optical STM-4 optical STM-16 optical STM-64 optical *.

* configur nfigur at ions ions pr ovided vided in a

lat er r elease

S y st s t e m I n t e r n a l In I n t e r f a c es es ¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

2 x 64 GTI GTI int erfaces (bidirectiona (bidirectiona l) t o th e LMC matrix 2 x 2 LAN in t erfaces (10BaseT) fo for cont rol system access 1 x LAN for for DCC a ccess ccess 2 x 2 system cloc clock in pu ts 2 synchronization out out put s 2 048 MHz, G.703. G.703.

I n t e r f a c e s P r o v id id e d 3AL 69222 AAAA

v i a G e n e r a l I n t e r fa c e s 51

a n d S E R VI V I CE C E B o a r d s (see (see F igure 29) ¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾




2 x power power in put -48/60 -48/60 V 1 GND (batt ery retur n) Sta tion tion Alarm interface interface Remote Alar Alar m int erface erface OH in ter faces (an (an alog, alog, 64 kbit/s and 2 Mbit/s) Debug int erfaces. erfaces.


Figure 29

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Common I/O Board Position in the Shelf

52

Functional Architecture Figure 30 illustrates a block diagram of the Common I/O shelf with the listed interfaces. A description of the functions of the blocks is given below.





AU CO N G I CRU DCC EC ECC GND

Administrative Unit Interface Board Clock Reference Unit Data Communication Channel Equipment Controller Embedded Control Channel G r o u nd

Figure 30

GTI I/ O LAN LMC MBC SC SMX

G eneric Transpor t Interface Input/ O utput Local Area N etwork Large Matrix Configuration Master Clock Board Shelf Controller Shelf Matrix Extender

Interfaces and Block Diagram of the Common I/O Shelf

I /O

The I/O block contains I/O port functionality for the electr electr ical ical a nd optical line signals a nd access access ports.

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Th e e l e c t r i c a l line signals are connected to access boards where they are electrically terminated before they reach the I/O port boards where the transport terminal functions, such as signal regeneration and decoding, clock recovery and adaptation functions, such as VC-4 assembly/disassembly, are performed. K1/K2 bytes are filtered and passed to the network protection fun ction in t he Sh elf Mat rix Exten der (SMX) (SMX) boar boar d where they are evaluated and, if necessary, protection switching (MSP) is initialized. Th e o p t i c a l line signals are directly connected to th e I/O I/O port port boar boar ds.



Each I/O port board sends/receives 8 or 16 STM-1 signals (depending on port width) to/from each SMX boar boar d (active (active an d st an d-by) d-by).. y a m s e g n a h C .t n e m p o l e v e d d n a h rc a e s re s u o u n ti n o c

Networ k P rot ection


Transmission, control and synchronization fun ctions ar e loc locat ed on on th e SMX boar boar d. i o n r e la l a t e d f u n c t io i o n s are: Th e t r a n s m i s s io ¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

3AL 69222 AAAA

MSP an d Higher order Pa th Connec Connectio tion n (HPC) switching functions controlled by inband signalling from from t he I/O port port boar boar ds Adapt at ion ion of th e dat a signal, including including SNCP inban d signalling, signalling, between th e Comm Comm on I /O form at New Generic Tra nsport In ter face face (NGI, (NGI, 622 Mbit/s) Mbit/s) an d th e fo form at Generic Tra Tra nsport Int erface erface (GTI, (GTI, 155 Mbit/s) Mbit/s) used for for th e t ra nsfer to the LMC mat rix with with its co corr esponding esponding inband signalling Selection Selection an d switching between NGI signa ls for th e pur pose pose of of Equipment Pr otection tection Switching (EP (EP S) of of the I/O port port boar boar ds an d selection selection of th e r elevan elevan t NGI signa ls acco according to the configuration Monit Monit orin g of of GTI GTI inpu t signa ls fo for err ors in t he LMC mat rix an d forcing forcing mat rix protection protection switching in I/O I/O port port boar boar ds via inban d signalling in NGI Int erface erface to redunda nt administr at ive ive units of th e 4/1 4/1 OMSG Cont Cont rol par tsyst em Conver Conver sion sion of incomin incomin g batt ery su pply volta volta ge (-48... (-48...60 60 V) to all voltages r equir ed by t he S MX boar boar d component s. 54

The network protection functional block receives all adapted signals from the I/O port boards and selects 64 STM-1. K1/K2 bytes are used to activate the network protection functions (MSP switch and SNCP) and also Equipment Protection Switching functions (EPS). The received DCCs are collected and tr ansm itted to the E quipment Cont Cont roller roller (EC) (EC).. In transmit direction, the network protection function adds to the cross-connected frames the DCCs received from the EC, the overhead bytes received from the SERVICE board and the K1/K2 bytes and sends the frames to the respective I/O port port boar boar ds.



clock and synchronization related Th e f u n c t i o n s are performed by the Clock Reference Un it (CRU). CRU). y a m s e g n a h C .t n e m p o l e v e d d n a h rc a e s re s u o u n ti n o c

The CRU receives the redundant system clocks (155 MHz with missing pulse) from the 4/1 OMSG Mast er Cloc Clock Boar d (MCB), (MCB), selects selects one of the clocks locks an d generat es th e clo clocck an d synchr synchr onizat ion ion signals for for t he Comm on I/O shelf. shelf.


Redundant synchronization outputs are provided via the CONGI board interface. The clock is r ecov ecovered ered from SDH I/O boar boar ds or from t he 2 Mbit /s interfaces. Th e c o n t r o l f u n c t i o n s are performed by the Shelf Controller (SC) which controls all ASICs, including the interfaces to the redundant SMX board. It implements redundant LAN interfaces (10BaseT) for the communication with the central computing system Admin istr at ion ion Unit (AU) of of the 4/1 4/1 OMSG. The SC supports the Physical Shelf Control Element function. The control functionality is related to the Physical Machine Management Fu nction nction with th e basic ta sks: ¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

3AL 69222 AAAA

Row Row alar m an d perform perform an ce monitoring monitoring dat a collec ollectt ion ion an d pr ocessing ocessing Ph ysical ysical ma chine config configur ur at ion ion da ta provisioning Cont Cont rol of of the r eal-tim eal-tim e protection protection algorit algorit hm s for for t he Comm on I/O shelf Inventory data collection Communication with EC. 55

Equipment Controller EQUICO board)

( E C ) (located

on

the

As a pa rt of the Contr Contr ol part system, system, th e EC ha ndles the Data Communication Channels (DCC) and perform perform s DCC routing. C o n t r o l a n d G e n e r a l In I n t e r f a c e (C ( C O NG NG I )

The CONGI board, which is implemented as an int erface bloc block, pr ovides int erfaces for for ¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾



Remote Remote alar ms Stat ion ion alarm s Int erna l LA LAN.

Comm on I / O Shelf Shelf Architecture Architecture y a m s e g n a h C .t n e m p o l e v e d d n a h rc a e s re s u o u n ti n o c

The Common I/O shelf is able to support all types of interfaces ranging from 2 Mbit/s to STM-16 in a flexible way. The relevant slots may be equipped with an y type of I/O bo boar d.


The shelf is divided into the access area and the port port ar ea (see Figur Figur e 31). 31). Ac c e s s A r e a

In the access area, access boards are plugged in which provide the physical interface for the electrical line signals and partly for the STM-1 optical line signal. In addition, two CONGI boards and a SERVICE board are located in the middle of this area. In a shelf configuration handling STM-1 electrical ports with 1:N equipment protection, a High-speed Protection (HPROT) board is required in the access area which is associated with the protection protection I/O boar boar d in th e port port ar ea. P o r t Ar e a

The port area contains the port boards which provide the optical line interfaces, via front access, an d perform perform all digital signa l processing. processing. The The SMX boards and the Equipment Controller boards (EQUICO) are also plugged in in this area. The SMX boar boar ds int erface erface th e LMC960 LMC960 ma tr ix via via front access electrical/optical cabling.

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Figure 31

Architecture of the Common I/O Shelf

The following I/O port boards are supported by the Comm Comm on I/O shelf: 2 Mbit/ Mbit/ s I/ O port port board board

63x2 63x2 Mbit/ Mbit/ s, requir require es 3 acc access ess boards with with 21x2 21x2 Mbit/ Mbit/ s each ach

34 Mbit/ Mbit/ s I/ O port port board

3x34 3x34 Mbit/ Mbit/ s, requir require es one 3x34 3x34 Mbit/ Mbit/ s acc access ess board

STM-1e I/ O port board

4xSTM-1e, require requires s one 4xS 4xSTM-1e acc access ess board

STM-1o I/O I/ O port board

4xS 4xSTM-1o, requir require es one 2xS 2xSTM-1o acc access board

STM-4 I/O port port board board

1xS 1xSTM-4, requ require ires s no acc access board board

STM-16 I/ O port board

1xSTM16, occ occupies upies two two slots each ach with with 8xSTM-1 capacity apacity,, requires no access board

Optical I/O port boards provide the optical line interface on board with the exception of the STM-1 optical port. The STM-1 optical board with its 4xSTM-1 int erfaces erfaces pr ovides vides t wo of of the line int erfaces erfaces on t he port board itself and the other two on a related access board. The relationship between the port board and its access board is defined via the backpanel. The STM-16 port boards occupy two slots and can only be fitted into dedicated positions within the shelf.

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57

The Common I/O shelf may provide the following I/O capa capa city: I / O Typ e

2 Mbit/ s

Ca p a ci ty o f Co m m o n I / O Sh el f

max. max. # of I/O ports ports

STM-1 equiv quivale alent nts s

378

6

1:6

252




* . e c ti o n t u o h ti w re u t u f e h t n i e d a m e b re o f re e h t

Eq u i p m e n t Pr o tecti o n

*

34 Mbit/ s

42

14

1: 1 4

STM- 1 electrical

56

56

1: 14

STM- 1 optical

64

64

1+ 1

STM- 4

16

64

1+ 1

STM- 16

4

64

1+ 1

with bottom access

Table 2

I/ O Capacity of the Common Common I/ O Shelf

Op ti cal Shel f Conf Conf ig ur at ion s - STM- N Comm on Aspects Aspects This chapter describes the shelf configuration aspects common to all STM-N optical I/O types. Special aspects of the individual I/O types and electrical shelf configuration together with examples for the rack layout can be found in the Chapters 4.3.5 (STM-16 Optical Interface) to 4.3.11 (Plesiochronous (Plesiochronous 2 Mbit /s Int erface). erface). S T M -N -N O p t i c a l Sh Sh e l f C o n f i g u r a t i o n s

The 4/1 OMSG, Release 6, provides different shelf configurations (protected, unprotected and mixed I/O t ypes). ypes). P rot ection with in Configurations

Optical

Shelf

1+1 Linear MSP (single ended and dual ended) is provided for STM-N ports (N=1, 4, 16). The protection pairs consist of a working port and a protection port. Only one of the ports carries the traffic. The sa me a pplies for for STM-16 2-fibre 2-fibre MS-SPRin g. A 1:4 protection is only available for STM-1o and STM-4. 3AL 69222 AAAA

58

Modifications Configurations

within

Optical

Shelf

If the maximum number of STM-N ports is installed, further extension is possible by adding an oth er Comm Comm on I/O shelf to the system . Reconfiguration from protected to unprotected operation is possible by increasing the interface capacity to the matrix from 32 to 64 GTI by adding extra cables.

STM-16 Optical Interface The 4/1 OMSG, Release 6, provides the following optical STM-16 interfaces via different port boards: ¾ ¾ ¾ ¾





¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

STM-16 short h au l int er-off er-offic icee int erface S-16.1, S-16.1, complying with I TU-T Reco Recomm enda t ion ion G.957 STM-16 long long ha ul 1300 nm int er-offi er-officce int erface L-16.1, L-16.1, complying complying with ITU-T Reco Recomm enda t ion ion G.957 STM-16 long long ha ul 1550 nm int er-offi er-officce int erface L-16.2, L-16.2, complying complying with ITU-T Reco Recomm enda t ion ion G.957 L.16.2 L.16.2 J E (joint joint engineering) inter face Colo Colored red la ser in ter faces faces for for u p t o 40 diffe differr ent wavelengths for direct direct int erconn erconn ection ection with Wavelengt h Division Division Mu ltiplex (WDM) (WDM) equipment.

Different network protection schemes (1+1) MSP single-ended, (1+1) MSP dual-ended, 2-fiber MSSPRing, configurable via a Q interface, are provided for the STM-16 ports. A mix of different protection configurations on a pair of STM-16 port basis is possible. The STM-16 configuration supports up to four STM-16 I/O boards within one Common I/O shelf. One STM-16 board occupies two slots in the port ar ea of th e shelf. shelf. The configuration is optimized for 1+1 protection. An unprotected STM-16 configuration is also supported.

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Figure 32 depicts the layout for an STM-16 optical shelf.





Figure 32

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4xSTM-16 Optical Ports in a Common I/O Shelf

60

STM-4 Optical Interface The 4/1 OMSG, Release 6, provides the following optical STM-4 interfaces via different port boards: ¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾




STM-4 short haul 1300 nm inter-office interface S-4.1, S-4.1, complying complying with ITU-T Recommen Recommen da tion G.957 STM-4 long long h au l 1300 nm in ter -off -offic icee int erface L-4.1, L-4.1, co comp lying with ITU -T Rec Recommen da tion G.957 STM-4 long long h au l 1550 nm in ter -off -offic icee int erface L-4.2, L-4.2, co comp lying with ITU -T Rec Recommen da tion G.957 L4.2 L4.2 J E (joint joint engineering) inter face.

Different network protection schemes ((1+1) MSP single-ended, (1+1) MSP dual-ended and (1:4) MSP without extra traffic), configurable via a Q interface, are provided for the STM-4 ports. A mix of different protection configurations on a pair of STM-4 port port bas is is possible. possible.


Figure 33

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16xSTM-4 Optical Ports in a Common I/O Shelf

61

STM-1 Optical Interface The 4/1 OMSG, Release 6, provides the following optical STM-1 port boards and related access boar boar ds for for th e physical physical in ter face: ¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾




STM-1 short haul 1300 nm inter-office interface S-1.1, S-1.1, complying complying with ITU-T Recommen Recommen da tion G.957 STM-1 long long h au l 1300 nm in ter -off -offic icee int erface L-1.1, L-1.1, co comp lying with ITU -T Rec Recommen da tion G.957 STM-1 long long h au l 1550 nm in ter -off -offic icee int erface L-1.2, L-1.2, co comp lying with ITU -T Rec Recommen da tion G.957.

The different optical interfaces are implemented as replaceable modules. Two of the incoming signals are connected to the access board and two to the port port boar boar d.


One port board (4xSTM-1o) together with its related access board (2xSTM-1o) provides 4xSTM-1 optical interfaces. Different network protection schemes ((1+1) MSP single-ended, (1+1) MSP dual-ended, (1:4) MSP without extra traffic), configurable via a Q int erface, ar e provided fo for t he STM-1o port s.

Figure 34 3AL 69222 AAAA

64xSTM-1 Optical Ports in a Common I/O Shelf 62

A mix of different protection configurations within th e sam e shelf on on a protection protection pa ir basis is possible, possible, whereby the 1:4 linear MSP with 4 working boards and 1 protection board must be taken into consideration.

STM-1 Electrical Interface The 4/1 OMSG provides electrical STM-1 interfaces complying with ITU-T G.703. One port board (4xSTM-1e) together with its related access board (4xSTM-1e) provides 4xSTM-1 electrical interfaces.




Different network protection schemes ((1+1) MSP single-ended, (1+1) MSP dual-ended, (1:4) MSP without extra traffic), configurable via a Q interface, are provided for the STM-1e ports. . e c ti o n t u o h ti w re u t u f e h t n i e d a m e b re o f re e h t

Figure 35

56xSTM-1 Electrical Ports (1:14 protected) in a Common I/O Shelf

With (1:14) 1:14) equipment protection, protection, a ma ximu ximu m of 56 working STM-1e ports per shelf are possible. The protection protection port port boar boar d needs a relat ed HPROT boar boar d in th e acc access area .

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Plesioc lesiochr hr onous 2 Mb it/ s Interfa ce The 4/1 OMSG provides plesiochronous 2 Mbit/s interfaces complying with ITU-T G.703. Balanced interfaces (120 Ω) and unbalanced interfaces (75 Ω) ar e support support ed.





Figure 36

378x2 Mbit/s Ports in a Common I/O Shelf

There are 63x2 Mbit/s interfaces per port board. Each port board supports three related access boar boar ds with 21x2 21x2 Mbit/s inter faces. With (1:6) 1:6) equipmen equipmen t protection protection for for th e port port boar boar ds, a total capacity of 378x2 Mbit/s interfaces is possible.

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Plesiochronous 45 M bi t/ s DS DS3 3 I/ O Par Par tsys tsystem tem The 4/1 OMSG, Release 6, also provides the same plesiochronous 45 Mbit/s interface as Release 5. Tra nsm it a nd receive receive elec electr tr ical ical signa ls co comply with Bellcore GR-499-CORE (DS3) and, in part, with the ETSI definition of 45 Mbit/s signals (E32) in order to meet t he 4/1 4/1 OMSG system system requirements.





AU CDB CO N V Labyrinth IO B45

Administrative Unit Clock Distribution Board Co Converter

IPB MCB SCG L

Internal Protection Boar d Master Clock Board Signal Cable G rounding

I/ O Boar d 45 Mbit/ s

SPB

Satellite Processor Board

Figure 37

Block Diagram of I/O45

At present, the I/O 45 Mbit/s/DS3 partsystem provides clear channel mapping of E32 (DS3) signals in a GTI Domest Domest ic Unit DU-3. DU-3. Multiplexing Multiplexing of DS2 and DS1 signals is planned for future releases.

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One I/O 45 Mbit/s/DS3 double subrack contains a maximum of twelve working IOB45s plus two for protection. protection. Ea ch IOB45 car car ries t hr ee 45 Mbit/s/ Mbit/s/DS3 DS3 I/O ports. The minimum hardware modularity is th ree port port s per boar boar d. Clock Distribution Boards CDB (part of the Clock Generation and Distribution partsystem) and Sat ellite ellite Pr ocessor essor Board s SPB (par t of the Contr ol partsystem) are shared by all units in the double subrack.





CDB CO N V IOB45 IOB45

Clock Distribution Board Converter 45 Mbit/s Mbit/s I/O Board Board

IPB SPB

Figure 38

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Internal Protection Board Satellite Processor Board

I/O 45 Mbit/s DS3 Double Subrack Layout

66

Clock Generation and Distribution The clock generation can be configured for the Synchronous Equipment Clock (SEC) type, complying with ITU-T Recommendation G.813 or the Synchronization Supply Unit (SSU) type complying with G.812. The SEC is the lowest SDH synchronization level. Each Network Element (NE) provides an SEC. The initial frequency offset in hold-over mode is less t h a n 5 x10 -8 and the maximum frequency deviation during the hold-over mode operation caused by temperature variation is 2 ppm. The filter ban dwidth in t ra cking mode is 1 Hz.





The SSU is the master synchronization source for all NEs within a node. The initial frequency offset in t he hold-o hold-over mode is less less t ha n 5 x10 -10 . The filter ban dwidth in t ra cking mode is 3 mH z.

Tasks The partsystem Clock Generation and Distribution perform perform s t he follo following wing ta sks: ¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

Pr ovisio ovisionin nin g of of severa severa l selecta selecta ble referen ce tim ing sour sour ces Selection Selection of one of these r eferen eferen ce tim ing sources for for synchr onizing t he cloc clock gener at or for for genera tin g the inter na lly requir ed system system cloc clocks Pr ovisio ovisionin nin g of of eexter xter na l clo clock ck out out pu t s elected elected from cloc clocks der ived fr fr om STM-N signa ls Pr ovisio ovisionin nin g of of exter na l clo clocck out pu t der ived from t he syst em cloc clock Redunda nt distr ibution of of th e system clo clock within the equipment equipment .

Up to four 2.048 MHz timing references are supported. One of the four timing references is selected as the active timing reference either automatically according to a priority list, or manually. If no timing reference is available an int ern al cloc clock oscillat oscillat or is u sed. In addition, two external 2.048 MHz clock outputs ar e provided. provided.

3AL 69222 AAAA

67





Figure 39

Block Diagram of Master Clock Board MCB

Pri ncipl ncipl e of Cloc Clock k and Fra me Distrib ution The redundant clock generators (Master Clock Board MCB) transmit clock signals which have the same frequency within the system. The system cloc clock k is modula ted wit h t he fra me cloc clock. One of the two clock signals is designated as the active clock, the corresponding MCB is the master, either arbitrarily or by means of the Control partsystem. The other MCB is the slave, synchronized by the master MCB and producing the stand-by clock. In case of a failure in the active clock, there is a hitless switchover to the stand-by clock and the slave MCB becomes the master. Hitless means that there is a phase jump which is sh ort in comp comp ar ison ison t o a cloc clock per iod. iod. The modulat modulat ed system system cloc locks a re t ra nsmitt ed to the first-stage CDBs in the Matrix double subracks. Ea ch of of the first -stage CDBs r eceives eceives th e clo clock ck from from one of the two MCBs and distributes it to the second-stage CDBs in the double subracks and to t he Clock Clock Referen ce Un it (CRU) of of th e Common I /O sh elves. The second second -sta ge CDBs CDBs dist ribu te t he cloc clock to the Clock and Frame distribution Circuits (CFC) on t he User Boar Boar ds. CRU an d CFC select select one of th e clocks and demodulate the frame clock.

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CIB DB CDBF CFC CFC

Clock Interface Board Clock Distribution Board CDF with signal adaption Cloc Clock k and and Frame rame dis distribut ributio ion n Circ Circui uitt

Figure 40

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CRU HESS MCB SMX

Clock Reference Unit Hi- cap End Stage Subrack Master Clock Board Shelf helf Ma Mattrix Extende nder Board oard

Block Diagram of the Clock Generation and Distribution Partsystem

69

Synchr ynchr oni zati on Sour ces The 4/1 OMSG terminates a maximum of four timing references derived from synchronization sources and provides external control to switch references automatically or via a forced switch command. These tim ing references references can be ¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

an extern extern al timing referenc referencee stan dard derived from from a 2 Mbit/s signa signa l derived from from a n STM-N STM-N signa l.

The 2.048 MHz synchronization reference signals comp comp ly wit wit h ITU -T Recommen Recommen da tion G.703. o t e l b a c il p p a y ll a r e n e g s i t n e m u c o d s i h t n i n o ti a m r o f n i e h T



The following criteria are used for suppression of th e synchronizat synchronizat ion ion reference: reference:


¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

Loss of of Signa l Alar m In dicat dicat ion ion Signal Loss Loss of Fra me (STM-N only) Excessiv Excessivee Bit Er ror Rat e Timing Deviat Deviat ion ion Cr iteria .

The four synchronization references are designated with different priorities. In case of a failed or suppressed synchronization reference, it is automatically switched over to the partner references with the highest priority. Automatic switching from one reference to the next maintains synchr synchr onous operat ion. ion. If the last reference also fails, the 4/1 OMSG clock enters a hold-over mode. If failed timing references are restored, switch back is performed automatically. Manually forced control of the timing reference select select ion ion is a lso provided. provided. The 4/1 OMSG initiates appropriate alarms and status reports when timing references are lost or other synchronization-related fault conditions occur.

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70

Operation Modes Tracking Mode

Normally, the clock generator is in the tracking mode locked to the selected timing reference. Low bandwidth filtering removes phase noise from the cloc lock signa l being tr acked. The actual frequency offset of such a timing reference must not exceed the pull-in range of the clock clock su pply of 4.6x10 4.6x10 -6 with with respect respect to the nominal nominal frequency. Short Short interr upts of th e tr acked acked timing reference reference are accommodated without switching to another timing referenc referencee or or generat ing an out out put phase tr ansient. o t e l b a c il p p a y ll a r e n e g s i t n e m u c o d s i h t n i n o ti a m r o f n i e h T


H o l d -O -O v e r M o d e y a m s e g n a h C .t n e m p o l e v e d d n a h rc a e s re s u o u n ti n o c

If all timing references fail, the clock generator enters Hold-over mode. It keeps the frequency of the latest timing reference being tracked within a specified specified pr ecisio ecision n r an ge.


F r e e --R R u n n i n g Mo Mo d e

In case there is no timing reference available at the time the clock generator goes into service, an internal oscillator is used to generate the clocks. ±4.6x10 This oscillator has a frequency tolerance of 6 . No adjustment of the oscillator frequency is requir ed within th e lifetime lifetime of th e osc oscill illat at or. Under normal operating conditions, the generat or is not in th e free-run free-run nin g mode. mode.

clock

Equipment Practice The equipment practice of the 4/1 MultiService Metro Gateway Alcatel Optinex TM 1641 SX (4/1 OMSG) has been designed in a modular structure complying with ETSI standard practice ETS 300 119 (IEC 917). It consists of cabinets, racks, subracks and boar boar ds. Release Release 5 equipmen t pr actice actice is supported.

Racks The standard racks are 600 mm deep racks which house Matrix, Control and Dedicated I/O 3AL 69222 AAAA

71

partsystems.





Figure 41

Standard Rack Configuration Configuration (Example)

Four EMC screening top, bottom and side panels are attached to the standard rack and two-panel metal doors are mounted at the front and rear. Each standard rack contains up to two double subracks with air baffles to protect upper subracks from rising heat. Common I/O racks house up to two Common I/O shelves with a ir ba ffles. ffles. Shielding Shielding is perform perform ed on a shelf basis, no rack screenin screenin g is needed. Both types of racks are available with power distr ibution unit an d cable cable access access loc locat ed at th e top or at the bottom of the rack, also in a normal or eart hquak e compliant compliant versio version. n. The constituent racks of an 4/1 OMSG system are mount ed side by side in rows, with with side panels only at the end of the row and are fixed to each other by 3AL 69222 AAAA

72

means of contact rails. The racks max be arranged in two rows rows (ear (ear th quak e protected protected r ack) or m ult iple rows. The Common I/O racks can be placed back to back, thus enabling an increased I/O density per 600 mm x 600 600 mm footpr int compa red with prior releases.

Cabling Standard Rack Cabling All electrical signal cables from the outside into the screened area have to be fed through the Signal Cable Grounding Labyrinth (SCGL), in order to ground t he cable screen screen m esh. This is tr ue for for o t e l b a c il p p a y ll a r e n e g s i t n e m u c o d s i h t n i n o ti a m r o f n i e h T


¾ ¾ ¾ ¾



¾ ¾ ¾ ¾

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Sta tion cabling cabling of th e Dedicat Dedicat ed I/O subra cks. After passin g the SCGL, th e sta tion cables cables ar e conn ected ected t o the I/O subra cks by mea ns of mechan ical ical ada pter boards, plugged plugged in in t he conn ector ector st rips on th e back back plan e. Mat rix cabling cabling from from th e Comm Comm on I/O shelves. shelves. Maximum cable length is 10 m. The line signa signa ls ar e Low Vo Volta ge Diffe Differen ren t ial Signa ls (LVDS). (LVDS). After passing th e SCGL, SCGL, the ma tr ix cables are conn ected ected t o th e ma tr ix subr acks by mea ns of LVDS/ LVDS/GTI GTI ada pter boar boar ds, plugged plugged in th e conn ector ector st rips on th e back back plan e.

73

¾ ¾ ¾ ¾

LAN cabling. The cables of of the int ern al LAN, between NAU, NUTS a nd LAN LAN Switches, ar e fed fed thr ough t he SCGL. The exter na l LAN LAN is connected connected by BNC connectors.

The internal connections of the electrical cables can be accessed accessed after opening th e rea r doo door. Optical fiber signal cables are carried through a fiber guide and connected on the frontside of the optical I/O boards. the connections can be accessed after opening t he front door. door.

Comm on I / O Rac Rack k Cab lin g o t e l b a c il p p a y ll a r e n e g s i t n e m u c o d s i h t n i n o ti a m r o f n i e h T




The electrical station cables are connected directly to the shelves via access boards, no SCGL is reqired. Optical fiber cables are connected to the shelves via both both , access access an d port boards.

Optical Optical Inter- ra ck Cabli ng With optical inter-rack cabling, a maximum distance of 200 m is possible between Common I/O shelves and matrix boards, thus supporting a distributed system inst allation. allation. An optical version of the Shelf Matrix Extender (SMX) SMX) boar boar d an d of of the a dapt er boards on t he LMC matrix side is used. Optics always cover the whole 64 GTI link capacity, independent of the Common I/O shelf co configur at ion. ion.

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74

Subracks The Release 6 related double subracks I/O 45 Mbit/s/DS3 (IOS45), Matrix End Stage (HESS) an d Cent er St age (HCSS) consist of a single cha cha ssis with a common backpanel and integrated air baffle. All connections between the boards are performed via backpanel wirin g, only only extern al conn conn ections ections a re per form form ed by cablin cablin g. The New Administration Unit (NAU) and the LAN Switches are provided in a standard industrial housing which differs from S9 equipment and, as result, requires some adaptation effort. The NAU ha s for for ced coo cooling ling an d overh overh eat ing pr ot ect ect ion. ion.





The New Utility Subrack (NUTS) consists of a single subra ck, compr compr ising two functiona functiona l element s in a redunda nt configurat nfigurat ion. ion. The Common I/O shelf is divided in two areas, the access area in the upper part of the shelf and the port area in the lower. Both areas have the same height but different depth. All connections within th e shelf ar e perform perform ed by backpan backpan el wirin wirin g.

Station Alarm It is possible to equip four alarm lamps and four alarm contacts in one rack. The lamps are located at the top of each rack. The alarms are divided into URGENT and NON-URGENT NON-URGENT alar ms.

Power Sup pl y Supp ly Voltag e The power supplies of the 4/1 OMSG have a -48 V or -60 V. nomina l input voltage voltage of In each standard double subrack, four power -60 V input volta convert ers convert convert th e -48 V/ volta ge to the required board voltage. The power converters form form a 3:1 protectin g conf configur igur at ion. ion. The power power for for th e Comm Comm on I /O shelves shelves ar e supplied via th e CONGI boar boar d int erface. erface. The NAU has its own power supply. The LAN Switches ar e supplied by power power invert ers.

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Power Distrib ution -60 V power Figure 42 illustrates the -48 V/ distribution distribution in th e 4/1 4/1 OMSG standar d ra ck.





FPE:

Functional unctional Protect rotection ion Earth

Figure 42

Power Distribution and Earthing for Standard Racks

The 4/1 OMSG ma y be supplied by a -48 V or -60 V source. Each rack has one power access which is located in the power distribution unit with the circuit breakers at the top of the rack. Two separated power branches (Branch A and Branch B) supply the converters. Branch A and Branch B may be connected to two different 48/60 V sources or t o a comm comm on 48/60 48/60 V sour sour ce. There are interface: ¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

¾ ¾ ¾ ¾

3AL 69222 AAAA

four

connections

to

power

access

one ear th conn ection ection (FP (FP E) 25 mm2 one (+) (+) conn conn ection ection (co (comm on r etu r n) 25 mm 2 one (-) connection (Branch A) 25 mm2 one (-) (-) co conn ection ection (Br (Br an ch B) 25 mm 2.

76

A pre-circuit breaker (35 ...100 A) is inserted in the 48/60 V connection. Severa l r acks m ay be conn conn ected ected to one one pr e-c e-circuit br eaker . Thr ee power power filters filters a re loc locat ed at each ra ck input . The distributed power supply for the Common I/O shelf is illust illust ra ted in F igure 43. The Ma in P ower Block Block pr ovides ovides filt filt erin g, protection protection and delivers the power to the Common I/O boards. Each board in the port area of the Common I/O shelf receives the power signal and exploits the internal On Board Power Supply (OBPS) for the voltages voltages and curr ents required.



The power is also distributed to the access area for the SERVICE board and also for optional optical modules. y a m s e g n a h C .t n e m p o l e v e d d n a h rc a e s re s u o u n ti n o c

In the access area, Vcc power is obtained through the OBPS function of the CONGI board and fed to every slot slot for for t he power su pply of of t he a ccess board s.


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77





Figure 43

Power Distribution and Earthing for Common I/O Racks

Earthing All metallic parts and the 0 V reference potential are connected together and constitute the Functional Protection Earth (FPE) earthing conductor. The earthing conductor is separated from the supply circuit. The common return is isolated and eart hed only only at t he batter y.

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Tech ech n ical Da ta Synchr ynchr ono us In ter fa ces Optical STM-16 Interface Ch a r a ct er i sti cs

Un i t

Application code (Table 1 / G .9 5 7)

STM - 1 6

S-1 6 .1

O ptical Interface kbit/ s

O per ating wavelength range



Transmitter at Source type reference point S Max. spectral RMS width . e c ti o n t u o h ti w re u t u f e h t n i e d a m e b re o f re e h t

L-1 6.2

L- 16 .2 JE1

L-16.2 JE2

nm

2 48 8 3 20 12 70 to 1360

1280 to 1335

1500 to 1580

1530 to 1560

SLM nm

-

-

-

-

Max. –20 dB width

nm

1

1

<1

0.5

Minimum side mode suppression ratio

dB

30

30

30

30

Mean launched powe po werr

**

Maximum

dBm dBm

0

+2

+2

+4

Minimum

dBm dBm

-5

-2

-2

+1

Minimum extinction ratio

dB

8 .2

Receiver at Minimum sensitivity reference point R (BER= 1 E- 1 0)

dBm

-1 8

Minimum overload

dBm

0

Attenuation range

dB

0 to 1 2

O ptical ptical path S to R

* **

*

Complying with ITU- T G .9 58

N ominal bi t rate


L-1 6 .1

- 27

-2 8

- 29 -9

10 to 24

1 3 to 28

**

to be used used with with optical optical amplifier amplifier on ITU-T ITU-T G.652 fibe fiberr mean launched launched power power and power power budget budget according according to to the the booste boosterr us used

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79

Optical STM-4 Interface Ch a r a ct er i sti cs

Uni t

Application code (Table 1 / G .95 7)

STM - 1 6

S-4.1

O ptical Interface kbi t/ s


Transmitter at Source type reference point S Max. spectral RMS width



L-4 .2

L-4 .2 JE


N ominal bi t rate


L-4.1

nm

62 2 0 8 0 1 27 4 to 1356

1280 to 1335

1480 to 1580

MLM

1530 to 1560

SLM

nm

2.5

-

-

Max. –20 dB width

nm

-

1

<1


dB

-

30

30

Maximum

dBm dBm

-8

+2

Minimum

dBm dBm

-15

-3

dB

8 .2

10


dBm

- 28

Minimum overload

dBm

Attenuation range

dB

Mean launched powe po werr . e c ti o n t u o h ti w re u t u f e h t n i e d a m e b re o f re e h t



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-2 7

-3 1

-3 2

-8 0 to 1 2

1 0 to 24

1 0 to 2 8

80

Optical STM-1 Interface Ch a r a ct er i st i cs

Un i t

Application code (Table 1 / G .95 7)

STM - 1

S-1 .1

O ptical Interface kbit/ s


nm

Transmitter at Source type reference point S Max. spectral RMS width


L-1 .2


N ominal bi t rate


L-1 .1

15 5 5 2 0 12 80 to 1360

1280 to 1335

1480 to 1580

MLM

SLM

nm

7.7

4

-

Max. –20 dB width

nm

-

-

1


dB

-

-

30

Maximum

dBm dBm

-8

0

Minimum

dBm dBm

-15

-5

dB

8 .2

10


dBm

-2 8

-3 4

Minimum overload

dBm

-8

-1 0

Attenuation range

dB

0 to 1 2

10 to 2 8

Mean launched powe po werr y a m s e g n a h C .t n e m p o l e v e d d n a h rc a e s re s u o u n ti n o c




Electrical STM-1 Interface Ch a r a cter i st i cs

3AL 69222 AAAA

STM - 1

N ominal bit rate

15 5 52 0 kbit/ s

Elec lectric trical al Inte Interfa rfac ce

Comply Co mplyin ing g with ith ITU-T ITU-T G.703

Protocols rotocols and formats

Complying Complying with with ITU-T ITU-T G.709

Code

CMI

O utput voltage (pp) (pp)

1 ±0.1 V

O verv vervoltage oltage protect protection ion

Complying Complying with with ITU-T ITU-T G.703, G.703 , Annex B

Type of line

Coaxial pair, 75

W

81

Plesiochr lesiochr onou s Inter fa ces

45 Mb it/ s DS DS3 3 In ter fa ce (R5) (R5) Ch a r a cter i st i cs





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4 5 M b i t/ s

N ominal bit rate

4 4 73 6 kbit/ s

Elec lectrical trical inte interface rface

Comply Complying with with Bellcore llcore GR-499GR-499CORE or ITU-T G.703

Protoc rotocols ols and formats formats

Transpare ransparent nt

Code

HDB3


1 ±0.1 V



Type of line

Coaxial pair, 75

W

82

34 Mbit/ s Interface Interface Ch a r a cter i st i cs





3 4 M b i t/ s

N ominal bit rate

3 4 36 8 kbit/ s

Elec lectric trical al inte interfa rfac ce

Compl Co mply ying ing with ith ITU-T ITU-T G.703


Transpare ransparent nt or complying omplying with with ITU-T G.751

Code

HDB3


1 ±0.1 V



Type of line

Coaxial pair, 75

W

2 Mbit/ s Interfa ce Ch a r a cter i st i cs

2 M b i t/ s

N ominal bit rate

2 04 8 kbit/ s

Elec lectric trical al inte interfa rfac ce

Compl Co mply ying ing with ith ITU-T ITU-T G.703


Transpare ransparent nt or complying omplying with with ITU-T G.704

Code

HDB3


2.37 V (75 3.0 V (120

W)

or

W)



Type of line

Coaxial pair, 75 W or symmetr. ymmetr. pair, pa ir, 120 W

Clock Interface

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E xt xt er er na n a l t im im in in g r ef efe r en en ce ce s i g n al a ls

2 .0 4 8 M H z, z, com pl pl yin g w i t h I T U -T -T G .7 0 3 , 7 5 W or 120 W

C lo lock ou t p u t s ig ig n a l s

2 .0 .0 48 48 M H z, z, com p ly ly i n g w it it h ITU -T G.703, G.703, 75 W or 120 W

83

System ystem Ca p a ci ty Up to 960 STM-1 equivalents for the LMC960. Up t o 384 STM-1 STM-1 equivalent s for for th e LMC384.

Jitter a nd Wand er The jitter accommodation complies with ITU-T G.958, Type A. Implicitly, the jitter generated by Type B line equipment is a lso acco accomm odat ed. The wander accommodation complies with ITU-T G.783, Figure 6-2 / G.783. The input jitter and wander tolerance of the plesioc plesiochr onous in t erfaces co comp ly with ITU-T G.823. o t e l b a c il p p a y ll a r e n e g s i t n e m u c o d s i h t n i n o ti a m r o f n i e h T



Equ ip m ent Pra ctice tice . e c ti o n t u o h ti w re u t u f e h t n i e d a m e b re o f re e h t

Rack Dimensions

Hight Width Depth

Stan dard ra ck

2200 2200 x 60 0 x 600 mm

C om m on I /O r a ck

2 2 0 0 x 60 0 x 300 mm

S t a n d a r d d ou b l e s u b r a ck

7 2 0 x 53 3 x 250 mm

C om m on I /O s h e l f

6 5 0 x 48 3 x 250 mm

B o a r d D im i m e n s io io n s

Height Height Depth Depth

S t a n d a r d b oa r d

2 3 3 .3 5 x 210 mm

C om m on I /O b oa r d , p or t C om m on I /O b oa r d , a cce s s

2 6 5 x 213 mm 2 6 5 x 88 mm

Weight

Fu lly equipped rack

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≤350

kg

Fu lly equipped equipped double subra ck

≤36

kg

Fu lly equipped equipped Comm Comm on I/O shelf

≤42

kg

84

Environmental Conditions The en vironm vironm ent al condit condit ions ions comply with ETSI stan dard E TS 300 300 019. 019. S t or a g e

C l a s s 1 .1

T r a n s p or t

C l a s s 2 .3

O p e r a t i on

C l a s s 3 .1

With r egard t o ear th qua ke an d of offic fice vibra vibra tion, Bellc Bellcore sta nda rd TR_NWT_ TR_NWT_0000 000063 63 Issue 5, J uly 1993 is m et for for Zone 4. Temperature O p e r a t i on T r a n s p or t S t or a g e o t e l b a c il p p a y ll a r e n e g s i t n e m u c o d s i h t n i n o ti a m r o f n i e h T




+ 5 °C t o + 4 0 °C -4 0 °C t o + 7 0 °C -5 °C t o + 4 5 °C

Power Sup pl y System power power dissipat ion ion

≤

1000 W per ra ck

Dela y Tim Tim es The signal transfer delay from input to output does not exceed exceed t he follo following wing valu es:

Synchronous ynchronous Signals

Plesioc lesiochronous hronous Signals

VC- 3

3 0 µs

4 5/ 3 4 Mbit/ s

4 0 µs

VC- 1 2

6 0 µs

2 Mbit/ s

1 1 0 µs

Reliability Availability

The total downtime of any cross-connection through th e 4/1 4/1 OMSG does does not exceed exceed 4 minu tes per year. L i fe f e U t i l it it y

The life life ut ility of 4/1 4/1 OMSG exceeds exceeds 5 yea rs .

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85

Protection E q u i p m e n t P r o t e c t i on on

•

1+1 for the par par tsystems Cont Cont rol, rol, Matr ix, ix, Cloc Clock Gener at ion ion an d Distr ibution, optical optical STM-N I/O

•

1:N 1:N fo for th e elec electr tr ical ical I/O I/O part systems. systems.

Networ k P rot ection





•

S N CP

•

Fa st SNCP on on VCVC-4 4 an d VC-12 C-12 level level

•

L in in ea e a r M SP SP

•

Single-ended Single-ended MSP with with out K1/K2 K1/K2 protoco protocol

•

Dua l-ended l-ended MSP with K1/ K1/K2 K2 protoco protocol

•

MS-SPRing MS-SPRing for STMSTM-16 16 part systems. systems.

Electrom lectrom ag netic Comp Comp ati bil ity The requirements EN55022, EN50082_1 and ETS 300 386_1 1994 Table 2 a re fulfilled. fulfilled.

Pr od uct uct Sa Sa fety The 4/1 OMSG complies with IEC 950 and EN60950. The optical STM-1 interfaces do not exceed the limits of Laser Class 1 and comply with IEC 825 an d EN60825. EN60825.

Abbreviations A AI S

Al a rm r m I n di dica ti t i on S i g n al al

AP S

Au t om om a t ic ic P r ot ot ec e ct io ion S w i t ch ch in in g

AS IC IC

Ap pl pl i ca t io ion S pe pe ci ci fi c I C

AT M

As yn yn ch ch r ou ou n ou ou s T r a ns n s po por t M od ul u le

AU

Ad m i n i s t r a t i v e U n i t

AU G

Ad m in in is is t ra r a t iv iv e -U -U n it it -G -G r ou ou p

B 3AL 69222 AAAA

86

BE R

B i t E r r or R a t e

BI P

B i t I n t er er l e a v e d P a r it it y

BN C

B a yo yon et et N ut u t C on ne n e ct or or

C





C AB

C e n t ra r a l Al a r m B oa rd rd

CD B

C l ock D is t ri r i b u t io ion B oa r d

CF C

C l ock a n d F r aam m e R e ce i ve C i r cu cu it it

CI B

C l ock I n te t e r fa fa ce ce B ox

CMI

C od e d M a rk r k I n ve ve r s i on

C ON ON GI GI

C on t r ol ol a n d G en en er e r a l I n t er er fa fa ce ce

CON V

C on ve ve r t er er (p ow e r )

CRU

C l ock R e fe r en en ce ce U ni nit

CT

C r a ft T e r m i n a l

C XB

C e n te t e r s t ag a g e M a tr t r ix ix B oa rd rd

D

3AL 69222 AAAA

DC

D a t a C om m u n i ca t i on

D CC

DC Ch a n n el

DCN

D C N e t w or k

87

E EC

E q u i p m e n t C on t r ol l e r

E MC MC

E le le ct ct r oo-M a gn g n et e t ic ic C om p at a t ib ib i li t y

E Q U IC IC O

E q u ip ip m en e n t C on on t r ol ol l e r b oa oa r d

E TS TS I

E u ro r op ea ea n T e l e com m u ni n i ca t io ion Standardization Institute

F F FP FP

F as a s t F ac a ci l i t y P ro r ot ec ect io ion

F PE PE

F un u n ct ct io ion al a l P r ot ot ec ect io ion E ar a r th th

FW

F ir m w a r e

G o t e l b a c il p p a y ll a r e n e g s i t n e m u c o d s i h t n i n o ti a m r o f n i e h T




GTI

G e n er er ic ic T r an a n sp sp or t I n te t e r fa fa ce ce

GU I

G r ap a p h ic ica l U se se r I n te t e r fa fa ce ce

H H D B3 B3

H i gh gh D en en s it it y B ip ip ol ol a r cod e of or d er er 3

H DL DLC

H ig ig h l e v e l D a t a L i n k C on t r ol ol

HPC

H ig ig h -o -or de de r P a th t h C on ne n e ct io ion

H P R OT OT

H i gh gh -s -s pe pe ed ed P r ot ot e ct ct i on on b oa oa r d

HW

H a r dwa r e

I IIC

I n t er er -I -I n te t e g r at a t ed ed C i r cu cu it it

I /O

I n p u t /O u t p u t

ISO

I n te t e r na n a ti t i on al a l S t an a n da da rd r d i z a ti t i on Organization

I TU TU -T -T

I n t er er n a t i on on a l T el el e co com m u n i ca ca t io i on U n io ion Teleco Telecomm un icat icat ion ion sector

L L AN

L oca l Ar ea ea N et et wo wor k

LOS

L os s O f S i g n a l

LP S

L a se s e r P ro r ot ec ect io ion S h ut u t do dow n

L VD VD S

L ow ow Volt a g e D if iffe r en en t i a l S ig ig n a ls ls

M

3AL 69222 AAAA

MS

M u l t i p l e x S e ct i on

MS P

M S P r ot e ct i on

M S4 S4 K

M a t r ix ix S h el elf for 4 09 09 6 S TM TM --1 1 e qu qu iv i v a l en en t s

MS-SPRing MS-SPRing

MS Sha red Pr otection tection fo for Ring Ring configuration 88

N N AU AU

N ew ew Ad m in in is is t ra r a ti t i v e U ni nit

NE

N e t w or k E l e m e n t

N MS MS

N et et wo wor k M a na n a ge ge m en en t S ys t em em

N P OS OS

N et e t wo w or k P r ot ot e ct ct io i on O pe pe r a t io ion S ys ys t em em

N RZ

N on -R e t ur u r n t o Ze r o

O



OA

O p t i ca l Am p l ifi e r

O AM

O p e r a ti t i on a n d M a in in te t e n a nc n ce

O BP S

O n B oa rd r d P ow ow e r S u pp pp ly ly

OH

O ve r h e a d

O MSG

O p t i n e xTM MultiServic MultiService Gatewa y

4/1 4/1 OMSG Optinex TM MultiServic MultiService Metr o Gatewa y y a m s e g n a h C .t n e m p o l e v e d d n a h rc a e s re s u o u n ti n o c

4/4 4/4 OMSG Optinex TM MultiServic MultiService Core Core Ga teway a nd Cross Connect


O MSN

O p t i n e xTM MultiService Node (ADM)

OS

O p e r a t i on S y s t e m

OTI

Optical Optical Tran sport sport Int erface erface

P P DH DH

P le le s i och r on on ou ou s D i g i t a l H ie ie r a r ch ch y

P OH

P a t h O ve r h e a d

Q Q E CC CC

Q -i -i n t e r fa fa ce ce E m b ed ed de d e d C om om m u n i ca ca t i on on Channel

R RI

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S SC

S h e l f C on t r ol l e r

S DH DH

S yn yn ch ch r on on ou ou s D i gi t a l H ie ie r a r ch ch y

SE C

S y n ch ch ro r on ou ou s E qu qu ip ip m en en t C l ock

SM

S yn ch ch ro r on ou ou s M u lt lt ip ip l e x e r

SN C

S u bn bn et et wo wor k C on ne n e ct io ion

S N CP

S N C P r ot ot ec ect io ion

SSU

S y n ch ch ro r on iz iz a t io ion S u pp pp l y U ni n it

S TM TM

S yn yn ch ch r on on ou ou s T r a ns n s po por t M od ul u le

S T MM-N

S TM TM l ev ev el el (N = 1 ,4 ,4 ,1 ,1 6, 6, 64 64 )

SW

S oft w a r e

T o t e l b a c il p p a y ll a r e n e g s i t n e m u c o d s i h t n i n o ti a m r o f n i e h T


T MN MN y a m s e g n a h C .t n e m p o l e v e d d n a h rc a e s re s u o u n ti n o c


T el el e co com m u n ic ica t io ion M a n a ge ge m en en t N et e t wo w or k

V VC -4

Vi r t u al a l C on t ai a i n er er of t h e S D H (4 is th e hiera rchical level) level)

Glossary Common I/ O Common I/O shelves may be equipped with I/O modules of an y PDH or SDH level.

Dedicated Dedicated I/ O Dedicated I/O subracks are specified each for a cert ain PDH or SDH level. level. Dedic Dedicat ed I/O subra cks, except the 45 Mbit/s/DS3 I/O subrack, are parts of form er Releases. Releases.

End Stage The End Stage (ES) comprises the Input Stage (IS) and the Output Stage (OS) of the 4/1 OMSG LMC matrices.

Grooming Aggregation of traffic flows from different sources directed directed t owar ds a comm comm on dest inat ion. ion.

Hitless No bit err or will occ occur on th e tr affic affic.

In Service Upgr ade 3AL 69222 AAAA

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Pr ocedur e of of inst inst alling added or chan ged HW or or SW parts in an existing system while traffic is running th rough rough th e system. system.

I/ O upgrade upgrade Installation of additional I/O levels or capacity in th e system. system.

Matrix upgrade Changement of the matrix center stage to achieve another matrix family with a greater crossconnectin g cap cap acity.

Receive eceive di r ectio ectio n Signal flow from the line interface through the I/O port port boar boar d to th e 4/1 4/1 OMSG LMC LMC ma tr ix. ix. o t e l b a c il p p a y ll a r e n e g s i t n e m u c o d s i h t n i n o ti a m r o f n i e h T



STM- 1 equi valent


Matrix capacity of switchable ports regardless of the actual I/O level configuration of the Cross Conn Conn ect ect system.

System extension Installation of additional I/O ports and end stage ma tr ix modules. modules.

System ystem upg ra de Adding of features to an existing configuration by inst alling a new release. release.

Traff ic interruption Tra ffic hit which which la sts longer longer t ha n 2 seconds. seconds.

Transmit direction Signal flow from the 4/1 OMSG LMC matrix th rough t he I/O port port boar boar d to the outgoing outgoing line. line.

Transport netw ork Entire set of transmission systems installed and run by an operator for transmitting information flows.

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Rela ted Docum Docum ents





ITU-T ITU-T Recommendation ecommendation G.703 G.7 03

Phys hysical/ elect electrical rical characte characteris ristics tics of hierarchical hierarchical digital interfaces


Synchronous ynchronous frame structures tructures used used at primary primar y and secondar econdary y hierarchical hiera rchical levels levels


Synchronous ynchronous Digital Hierarchy Hierarchy bit rates

ITU-T ITU-T Recomme commendation ndation G.751

Digital multiplex multiplex equipment quipment operating operating at the third order bit rate of 34 368 kbit/ s and the fourth order bit rate of 139 13 9 246 24 6 kbit/ s and using using positive justifi justification cation


Characteris Characteristics tics of Synchronous ynchronous Digital Hierarchy Hierarchy (SDH) (SDH) multiplexing equipment

ITU-T ITU-T Recommendation ecommendation G.812T G.812 T

Timing requirements requirements of slave slave clocks clocks suitable for use use as Node No de Clocks Cl ocks in Sync Synchroni hronization zation N etw etworks orks (Transit (Transit Node) N ode)

ITU-T ITU-T Recommendati ecommendation on G.81 G. 813 3

Timing imi ng characteristics characteristics of SDH equipment slave clocks (SE (SEC)

ITU-T ITU-T Recomme ecommendation ndation G.823

The control control of jitte jitterr and and wan wander der within within digital netw networks orks which are based based on the 2048 20 48 kbit/ kb it/ s hierarchy hierar chy

ITU-T Recommendation G.826 Edition 08/ 96

Error performance parameters and objectives for international constant bit rate digital paths at or above the primary rate


Types and characte characteris ristics tics of SDH net network work protection protection architectures


O ptical interfaces interfaces for equipment equipment and systems relating to the Sync Synchrono hronous us Digital Digita l Hierarchy


Digital line system tem based based on Synchronous nchronous Digital Hierarchy Hierarchy for use on optical fibre cable

ITU-T ITU-T Recommendation ecommendation M.3010 M.30 10

Principles for a Telecommunic elecommunications ations Management Management Network

ETSI ETS 300 019

Envir nviron onme ment ntal al condi onditi tion ons s and and envir nviron onme ment ntal al test for for telecommunication equipment

ETSI ETS 300 119

Engin ngine eering ring requ requir ire eme ment nts s for for rac racks and and cabin abine ets

ETSI ETS 300 132-2 132-2

Pow owe er suppl upply y int interfac rface at the inpu inputt to the telecommuni telecommunications cations equipment

ETSI ETS 30 300 0 14 147 7

SDH multiple plexing structure

ETSI ETS 300 386-1

Public ublic tele telec commun ommunic icat ation ion netw network ork equipm quipme ent Elec lectrotromagnetic Compatibility (EMC) requirements; Product family overview, overview, compliance compl iance criteria and test test levels

IEC-Standa darrds

Safet fety of laser produ duc cts, EMC-to -topic pics

Bellcore G R- 49 9- CO RE

DS3

Bellc llcore ore TR-NWT -NWT-000063 -000063

Iss Issue 5, July uly 93

Bellcore ellcore TR-TS -TSY-000233 -0002 33

Wideband Wideband and Broadband Digital Cross Cross Connec Connect Systems tems,, Generic Requirements and Objectives, Issue 2, September 1989

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Alcatel-1641SX

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