TRAINING ON NOKIA DIGITAL TELECOMMUNICATION SYSTEMS DMRC
This document and the proprietary information it contains is for the internal use of Commtel Networks personnel and authorized recipients only
TOPICS
Section - 1 Basics of PDH
Section - 2 Nokia Digital Transmission System
Section - 3 Nokia Management System
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SECTION - 1
Basics of PDH
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NETWORK LAYERS Data / information and voice applications Packet data based services (IP, FR,...)
Voice (PSTN, cellular) and NB data services (64k & n*64k) SDH lower order (LO = VC12/VC3) layer
ATM layer
SDH higher order (HO =VC4 path) layer Optical (wavelength) layer
l - based connections
Fiber/ duct layer
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SYSTEM LAYERS
DWDM & STM- 16
SDH Network Management System
PDH Network Management System
Backbone Layer
STM- 1/4 Transport Layer Primary Access Layer (< 2Mbit/s) Voice Circuits & Data Circuits
FIBRE OPTIC CABLE & MICROWAVE RADIO
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PLESIOCHRONOUS DIGITAL HIERARCHY
•
•
Digital Telecommunication System Hierarchies
–
Plesiochronous Digital Hierarchy (PDH)
–
Synchronous Digital Hierarchy (SDH)
Plesiochronous Digital Hierarchies
–
Primary Order - 2 Mbit/s (2,048 Kbit/s)
– –
30 x 64 Kbit/s Channels
Second Order - 8 Mbit/s (8,448 Kbit/s)
– 4 x 2Mbit/s Tributaries – –
–
120 x 64 Kbit/s Channels
Third Order - 34 Mbit/s (34,368 Kbit/s)
–
16 x 2Mbit/s Tributaries
–
480 x 64 Kbit/s Channels
Fourth Order - 140 Mbit/s (139,264 Kbit/s)
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–
64 x 2Mbit/s Tributaries
–
1920 x 64 Kbit/s Channels
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FRAME STRUCTURES Frame Structure for 2 Mbit/s (ITU-T G.704)
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FRAME STRUCTURES The frame length is 125 µs, comprises 32 time slots, numbered 0...31. Each time slot contains 8 bits. Information relating to channels 1..30 is inserted in time slots 1...15 and 17...31. Since the frame comprises 256 bits and its repetition rate is 8000 per second, the bit rate of multiplexed signal is 2048 kbit/s.
Signaling information is transferred in time slot 16. TS16 can be used
TS0 is used for internal data transfer across a 2 Mbit/s
for Channel Associated signaling. When used for CAS, it establishes a
connection (frame alignment, alarms and supervision data). Bits
64 kbit/s bus, which is divided into smaller paths keeping the
2...8 of TS0 are replaced with the frame alignment signal
multiframe alignment signal as a reference point. The multiframe
0011011 in every other frame. Frame alignment is considered
consists of 16 successive frames, numbered 0...15. The multiframe
lost when the bit B2 in the received time slot TS0 is in error three
alignment signal 0000 indicates the beginning of the multiframe.
times in succession in those frames that do not contain frame
These four bits are located in bit locations 1...4 of time slot TS16 in
alignment signal.
frame 0. The signalling bits ai, bi, ci, di (i=1...15) corresponding to time slots TS1−TS15
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PLESIOCHRONOUS DIGITAL HIERARCHY
140 Mbit/s MUX
140 Mbit/s MUX
34 Mbit/s MUX
34 Mbit/s MUX
8 Mbit/s MUX
8 Mbit/s MUX
2 Mbit/s MUX
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2 Mbit/s MUX
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SECTION - 2
Nokia Digital Transmission System
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19” NDM SUBRACK – T37870.01
19” NDM SUBRACK T37870.01
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19” NDM SUBRACK – T37870.01
The subrack consists of a chassis, a motherboard, a front cover and mounting accessories for use when required. The subrack chassis is made of stainless steel. Cabling requires a space of at least 25 mm (or 0.5 U in IEC 19" rack) above and below the subrack. The subrack must be situated in a weather-proof location, either indoors or in an outdoor cabinet. The subrack can be installed in 19" (450 mm) racks, see figure below. By using mounting accessories included in the product it can also be installed in 500 mm ETSI-type racks. Air deflectors can be mounted above and below the subracks as required. The external battery voltages are connected to the subrack through either a NDM DC unit (NDU), NDM AC/DC Unit (NAU) or a Rack Power Supply Adapter (RPSA) via an NDM DC Adapter (NDA) in the subrack. Also previous rack specific DC adapters like Enhanced Power Supply Adapter 19" (EPSA 19") or DC-PSA can be used.
The subrack can house: 16 plug-in units (25 mm/5 T) + 1 Power Unit (39 mm 8T) Units which comprise only one card and have no special requirements concerning unit location can be fitted into any of the four sections of the motherboard. • 1U = 44.45 mm • 1T = 5.08 mm
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19” NDM SUBRACK – T37870.01
The motherboard of the subrack can be considered as being split into four sections. Each section consists of four unit locations. The section borders are indicated with a dashed line in the figure above. By using jumpers the sections can be joined to create larger sections. The subrack allows installation up to 4 x DB2 Multiplexer. The slot no. 17 is used for NDU/NAU. It is therefore possible to split the 17- slot motherboard into two, three or four sections. 8 -slot motherboard can be split into two sections. 13
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19” NDM SUBRACK – T37870.01
• DB2B with 2 Ch. Units can be
installed in slot 1-4, 5-8, 9-12 & 1316.
• DM2+ with 3 Ch. Units can be installed in slot 1-4, 5-8, 9-12 and 13-15.
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19” NDM SUBRACK – T37870.01
NDA T37884.01
NDU T37882.01
NAU T37883.01
Power Supply Alternatives Code
Description
1
T37882.01
NDM DC Unit (NDU), input voltage 24/48/60 Vdc, max. 10 A.
2
T37883.01
NDM AC/DC Unit (NAU), input voltage 100-240 Vac, max. 3,6 A. NAU contains two AC/DC modules.
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T37884.01
NDM DC Adapter (NDA), input voltage 24/48/60 Vdc, max. 10 A. Subrack interface for RPSA+RPM+ALM, DC-PSA or EPSA
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T37880.01
Rack Power Supply Adapter (RPSA) used as the enclosure for RPM T37881.01and ALM T37884.01
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NOKIA DM2 PRIMARY TERMINAL MULTIPLEXER
NOKIA DIGITAL TERMINAL MULTIPLEX EQUIPMENT DM2+ TC 21116
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NOKIA DM2+ PRIMARY ORDER TERMINAL MULTIPLEXER
Key features • Fulfils the relevant ETSI Open Network Provision requirements for leased line networks. • Comprises a common multiplex unit (MUX) and a variety of tributary units (VF and data). • Allows adding enhanced features simply by adding tributary units, without having to upgrade the multiplex unit's existing software. • Has a time-division multiplexed bus structure (ITU-T G.704) that allows flexible utilisation of the equipment's transmission capacity. • Allows each individual VF or data channel to use any 64 kbit/s time slot, several time slots or only part of the capacity of one time slot. Allocation of time slots is independent of the physical placement of the unit. • With VF channel units, provides an analogue interface with signalling adaptations ranging from subscriber signalling to various types of junction line signalling. Supports both channel-associated and common channel signalling. • Allows the use of subscriber line testing in subscriber applications. • With data interface units, supports bit rates 0.3 kbit/s − 1984 kbit/s in compliance with ITU-T V- and X- series Recommendations. • All units are managed through the multiplex unit's service interface. Most of the controls and settings can be done without any jumper modifications. Software settings are used to set, for example, the following functions: - Time slot selections - Level settings - Impedance settings - Signalling and data interface parameters - Loopbacks Commtel Networks Proprietary - Alarm 17 functions.
NOKIA DM2+ PRIMARY ORDER TERMINAL MULTIPLEXER
BASIC ARCHITECTURE OF DM2+
• Voice • Signalling • Data
VOICE
DATA Dynacard Bus
Functions of DM2
To Generate Tx Direction Clock Frequency of 2048 Kbit/s
•
Control the TDM occurring in the channel units
•
Form the Output Signal Frame
•
Generate the interface signal complying with ITU-T Recommendation G.703, as HDB3 line coded.
In the Receive Direction are: • Convert the input signal complying with ITU-T rec. G.703 to agree with equipment logic sections, disassembling the line code, generate the Rx direction clock signal.
Management Alarms Measurement 2048 kbit/s interface• Synchronisation • 64 kbit/s data
Data Units Include: • V.28 units • V.24 units • V.11, V.35, X.21 units • G.703 units • G.704 units • ISDN & ILT units
In the Transmit Direction are:
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• • • • • •
MUX
Voice Units Include: • VF units • SUB/EXCH units • SUB/SUB units
•
Functions of DM2
Synchronise to the incoming signal frame Control the demultiplexing occurring in the channel units
•
Monitor the error ratio of the received signal and recognise AIS.
•
Recognise Alarm Indication Signal (AIS)
Other Functions of DM2 •
Handles alarm indications using LED’s & Rack Alarm Lamps
•
Offers an auxiliary G.703 data interface which can be used, for example, 9 64 Kbit/s data transfer 9 Common channel signalling
•
Offers synchronisation interfaces (Tx & Rx clock)
•
Synchronise Multiplexing unit to external source
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NOKIA DM2+ PRIMARY ORDER TERMINAL MULTIPLEXER
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NOKIA DM2+ PRIMARY ORDER TERMINAL MULTIPLEXER DATA HYBRID OF DM2+
M Interface : Basically used for connecting Service Terminal or NMS to local microprocessor of DM2+ D Interface : Basically used to convey commands, controls to the equipment at the same stations with external 4 wire TMS bus Data Hybrid : Interconnects M interface, D interface, Microprocessor of local MUX unit & TS0 free bits or TS1-31 which can carry service channel in the Main signal.
Data Hybrid Not In Use
MI, DI & Service Channel connected to each other
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DI to 2M interface
MI, Supervision Data of Service Channel & DYNACARD Bus interconnected
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NOKIA DM2+ PRIMARY ORDER TERMINAL MULTIPLEXER
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DM2+ SERVICE MENU
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DM2+ SERVICE MENU
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DM2+ SERVICE MENU
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DM2+ SERVICE MENU
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DM2+ SERVICE MENU
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DM2+ SERVICE MENU
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DM2+ SERVICE MENU
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DM2+ TROUBLE SHOOTING If the alarm message is…
Then….
Power Supply Fault
Check the voltages and ground connections
Installation Error
Check that the units in the configuration have been installed with software installation. If not, install missing units. Another possible fault can be found in unit location strappings.
Missing Unit
Check that all the units in the configuration are firmly in their slots
Equipment Reset
Wait a moment – alarm typically clears by itself
No incoming 2M signal
Check the incoming main signal cable connection and line system attenuation.
AIS 2M
Check the far-end transmitter, possible higher order multiplexers and line system for faults.
Frame Alignment Lost
Check the far-end transmitter, possible higher order multiplexers, line system, CRC settings and network synchronization for faults.
BER>1E-3
Check the far-end transmitter and line for faults.
CRC Multiframe Lost
Check the CRC setting. Both ends of the point-to-point connection must have CRC check either ON or OFF.
Far-end Alarm
Check the far-end for alarms and act accordingly.
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NOKIA DB2 PRIMARY DROP/INSERT MULTIPLEXER
NOKIA DIGITAL BRANCHING MULTIPLEX EQUIPMENT DB2 TU 24001/2 TU 24010/1 30
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NOKIA DB2 PRIMARY DROP/INSERT MULTIPLEXER
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NOKIA DB2 PRIMARY DROP/INSERT MULTIPLEXER Key features • Comprises of B2 & X2 units and a variety of tributary units (VF and data). • Can be used as Drop/Insert in un-protected or Loop Protected equipment • Cross connection granularity : n x 8 kbit/s • Allows adding enhanced features simply by adding tributary units, without having to upgrade the multiplex unit's existing software. • Has a time-division multiplexed bus structure (ITU-T G.704) that allows flexible utilisation of the equipment's transmission capacity. • Allows each individual VF or data channel to use any 64 kbit/s time slot, several time slots or only part of the capacity of one time slot. Allocation of time slots is independent of the physical placement of the unit. • With VF channel units, provides an analogue interface with signalling adaptations ranging from subscriber signalling to various types of junction line signalling. Supports both channel-associated and common channel signalling. • With data interface units, supports bit rates 0.3 kbit/s − 1984 kbit/s in compliance with ITU-T V- and X- series Recommendations. • All units are managed through the multiplex unit's service interface. Most of the controls and settings can be done without any jumper modifications. Software settings are used to set, for example, the following functions: - Time slot selections - Level settings - Impedance settings - Signalling and data interface parameters - Loopbacks - Alarm functions. 32
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NOKIA DB2 PRIMARY DROP/INSERT MULTIPLEXER
BASIC ARCHITECTURE OF DB2B
Functions of DB2B X2 unit:
• Voice • Signalling • Data
VOICE
DATA
Voice Units Include: • VF units • SUB/EXCH units • SUB/SUB units
Dynacard Bus
Functions of DB2B
B2
• • • • •
X2
•
Management Alarms • Measurement 2048 kbit/s interface Synchronisation
Data Units Include: • V.28 units • V.24 units • V.11, V.35, X.21 units • G.703 units • G.704 units • ISDN & ILT units
Provide 1x2 Mbit/s interface or access to time slots via channel units Realises Timeslot connections to Tx direction in compliance with Branching tables
•
Synchronisation interface for external clock and provide equipment clock for other equipment
•
Monitor the error ratio of the received signal and recognise AIS.
B2 unit: •
Provide 2 x 2 Mbit/s interfaces (Direction #1 & #2)
•
Handles alarm indications using LED’s & Rack Alarm Lamps
•
Perform the settings and control coming via service interface and command bus
•
Any direction (1,2 or 3) can be set for ‘In use’ or ‘Not in use’ mode
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Controls equipment in fault condition
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Control Data Hybrid
•
Generate Master clock, synchronised to incoming signal (Rx1..3) or external
•
Monitor the error ratio of the received signal and recognise AIS.
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NOKIA DB2 PRIMARY DROP/INSERT MULTIPLEXER
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NOKIA DB2 PRIMARY DROP/INSERT MULTIPLEXER Functional Block Diagram Of DB2B
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NOKIA DB2B CONFIGURATION OPTIONS UN-PROTECTED DB2B
DB2B with CH Units Channels can be branched from both directions of Main branch without limitation. The types of branching are:
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•
Through-connection between interfaces 1 & 2
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Arrangement of channels between interfaces 1 & 2
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Branching in direction 1-3
•
Branching in direction 2-3
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VF common channels
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Digital common channels
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NOKIA DB2B CONFIGURATION OPTIONS
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NOKIA DB2B CONFIGURATION OPTIONS
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NOKIA DB2B CONFIGURATION DB2LP
The Loop Protection philosophy involves developing a network architecture in the form of a physical loop, and being able to dynamically branch channels in either a clockwise or anticlockwise direction so as to avoid equipment failures or Fibre break in one direction and maintain high system availability. The DB-2LP dynamically selects an available path through the loop configuration. Loop Protection is provided on 64kbps channel level. The protection is channel specific and, depending on the transmission capacity available and the use of the connections, concern all or some of the channels in the system.
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NOKIA DB2 PRIMARY DROP/INSERT MULTIPLEXER
B0 (1 Å Æ 2) B1 (1 Å Æ 3)
B2 (2 Å Æ 3) S2 C2 S0 C0
Y1/2/3 M1/2
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S1 C1
NOKIA DB2 PRIMARY DROP/INSERT MULTIPLEXER
DATA HYBRID OF DB2B M Interface : Basically used for connecting Service Terminal or NMS to local microprocessor of DM2+ D Interface : Basically used to convey commands, controls to the equipment at the same stations with external 4 wire TMS bus Data Hybrid : Interconnects M interface, D interface, Microprocessor of local MUX unit & TS0 free bits which can carry service channel in the Main signal.
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•
The Data Channels interfaces are formed by free bits b5-b8 of Timeslot 0 of each 2M directions.
•
Data channel operates on sampling principle at 4,8, or 16 KHz, depending on the number of bits used.
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Usage and the sampling rate are set individually for each 2M data channel interface.
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DH ON enables both DI & MI permanently
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NOKIA DB2 PRIMARY DROP/INSERT MULTIPLEXER
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MI : Maintenance Interface
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DI : Data Channel
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PA1/PA2: Programmable Alarm Outputs
•
RLSS: Received 2.048 Mbit/s Signal, 120 ohm
•
RLSU: Received 2.048 Mbit/s Signal, 75 ohm
•
RLSC: Received 2.048 Mbit/s signal Common
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RLSG: Received 2.048 Mbit/s signal Ground
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TLSS: Transmitted 2.048 Mbit/s Signal, 120 ohm
•
TLSU: Transmitted 2.048 Mbit/s Signal, 75 ohm
•
TLSC: Transmitted 2.048 Mbit/s signal Common
•
TLSG: Transmitted 2.048 Mbit/s signal Ground
NOKIA DB2 PRIMARY DROP/INSERT MULTIPLEXER
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MI : Maintenance Interface
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DI : Data Channel
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PA1/PA2: Programmable Alarm Outputs
•
RLSS: Received 2.048 Mbit/s Signal, 120 ohm
•
RLSU: Received 2.048 Mbit/s Signal, 75 ohm
•
RLSC: Received 2.048 Mbit/s signal Common
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RLSG: Received 2.048 Mbit/s signal Ground
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TLSS: Transmitted 2.048 Mbit/s Signal, 120 ohm
•
TLSU: Transmitted 2.048 Mbit/s Signal, 75 ohm
•
TLSC: Transmitted 2.048 Mbit/s signal Common
•
TLSG: Transmitted 2.048 Mbit/s signal Ground
DB2 SERVICE MENU
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DB2 SERVICE MENU
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DB2 SERVICE MENU
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DB2 SERVICE MENU
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DB2 SERVICE MENU
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DB2 SERVICE MENU
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DB2 SERVICE MENU
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DB2 SERVICE MENU
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DB2 TROUBLE SHOOTING If the alarm message is…
Then….
Power Supply Fault
Check the voltages and ground connections
Installation Error
Check that the units in the configuration have been installed with software installation. If not, install missing units. Another possible fault can be found in unit location strappings.
Missing Unit
Check that all the units in the configuration are firmly in their slots
Equipment Reset
Wait a moment – alarm typically clears by itself
No incoming 2M signal
Check the incoming main signal cable connection and line system attenuation.
AIS 2M
Check the far-end transmitter, possible higher order multiplexers and line system for faults.
Frame Alignment Lost
Check the far-end transmitter, possible higher order multiplexers, line system, CRC settings and network synchronization for faults. Check also the allocation of MCB and LCB and buffers. The main branch of Master must be in buffered mode. Check the far-end transmitter and line for faults.
BER>1E-3 CRC Multiframe Lost
Check the CRC setting. Both ends of the point-to-point connection must have CRC check either ON or OFF.
Far-end Alarm
Check the far-end for alarms and act accordingly.
Fault in Tx
Check the outgoing signalling bits-forbidden combination (0000) detected.
Run Diagnostics Test
Run the RUNTEST (TOP,9,7) and check the handbook for meaning of error code
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NOKIA DN2 Dynamic Node Equipment
NOKIA Dynamic Node Equipment DN2
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NOKIA DN2 Dynamic Node Equipment
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NOKIA DN2 Dynamic Node Equipment
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NOKIA DN2 Dynamic Node Equipment
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NOKIA DN2 Dynamic Node Equipment
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NOKIA DN2 Dynamic Node Equipment
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NOKIA DN2 Dynamic Node Equipment
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NOKIA DN2 Dynamic Node Equipment
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DN2 Service Menus
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DN2 Service Menus
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DN2 Service Menus
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DN2 Service Menus
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DN2 Service Menus
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DN2 Service Menus
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DN2 Service Menus
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DN2 Service Menus
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DN2 Service Menus
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DN2 Service Menus
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DN2 Service Menus
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DN2 Service Menus
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DN2 Service Menus
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NOKIA CHANNEL UNITS
¾ Data Interface Unit : DIU 0.6..19.2k, V.28/V.11
¾ Subscriber/Subscriber Channel unit : SUB/SUB
¾ Data Interface Unit : DIU 64k, X.21
¾ Voice Frequency Channel unit : VF E&M
¾ Subscriber/Exchange Channel unit : SUB/EXCH
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NOKIA CHANNEL UNITS
DATA INTERFACE UNIT DIU 19.2K, V.28/V.11 TU 24021.01
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Data Interface Unit : DIU 19.2k, V.28/V.11 - TU 24021.01 DIU 19.2k, V.28 CHANNEL UNIT : TU 24021 • The 5T size card consists of 8 x V.28/V.11, Asynchronous interfaces. • The DIU channels are configurable for different Async. data rates such as 600, 1200, 2400, 4800, 9600, 19200 bit/s. • The DIU channel uses 1,2,4 or 8 bits of timeslot for data communication depending upon the type of coding and data rate. • Each card has on-board DC/DC convertor & operates in range of –20 VDC to –72 VDC. • The DIU card has 2 Mbit/s bus interface for establishing connection to DM2, DB2B or DN2 equipment. • All the channels are fully programmable for following characteristics: 9 Channel Use 9 Channel time slot allocation 1-15 & 17-31 9 Operating Mode Selection: Sampling, Sampling & Filtering, Transition Coding 9 Channel Loopbacks 9 Loopback Timeouts 9 Monitoring of data • The typical applications are: 9 SCADA RTU & Master connectivity 9 Data communication for other type of applications 76
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Data Interface Unit : DIU 19.2k, V.28/V.11 - TU 24021.01
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•
8 x V.28/V.11, Asynchronous channels
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Tx, Rx & Gnd signals
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Operating Voltage: -20… -72 VDC
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Power Consumption < 4 W
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Data Interface Unit : DIU 19.2k, V.28/V.11 - TU 24021.01
OPERATING MODES
• •
Use Bit masking to define the bits to be used for data transmission (mask with 1 for using and 0 for not using). Bit mask is ‘AND’ed with actual data bits.
CCITTR.111
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Data Interface Unit : DIU 19.2k, V.28/V.11 - TU 24021.01
LOOPBACKS •
Loop to Interface (L1): Data coming from V.28 interface looped back to interface
•
Loop to equipment (L2): Data coming from designated timeslot of the channel is looped back to MUX.
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DIU 19.2k, V.28: SERVICE MENU
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DIU 19.2k, V.28: SERVICE MENU
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DIU 19.2k, V.28: SERVICE MENU
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TROUBLE SHOOTING OF DIU 19.2K V.28 UNIT
Power Supply Fault
Step 1:
- Check the incoming voltage level and the unit operating voltages (TOP,7,9,u,1..). Check for abnormality in measurement. - Calibrate the voltages.
Step 2:
If the above measures do not solve the problem. Remove the unit and re-inset back into designated slot
Step 3:
If the problem still persists, then there might be possibility of power supply section failure.
Channel fault / Memory Fault
Step 1:
Conduct the testing of channels and memory using ST menu TOP,9,9,u,…
Forced Indication
Step 1:
- Check that either RED or ORANGE LEDs are not FORCED ON. - Using ST menu TOP,5,9,u,2,1 the LEDs can be normalised which should remove alarm
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Nokia Data Interface Units
DATA INTERFACE UNIT DIU X.21
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Data Interface Unit : DIU X.21 DIU X.21 CHANNEL UNIT : • The 5T size card consists of 5 x X.21, Synchronous interfaces (DCE/DTE) • The DIU channels supports to operate in DCE & DTE mode with configurable for different Sync. data rates of 48, 56 & 64 kbit/s. • The DIU channel control signals are transferred in Timeslot 16. The control signals received from far end (in TS16) can be filtered for 12 ms. • The Synchronisation for PMUX can be generated from incoming 48/56/64 kbit/s clock provided by the terminal equipment. • Each card has on-board DC/DC convertor & operates in range of –20 VDC to –72 VDC. • The DIU card has 2 Mbit/s bus interface for establishing connection to DM2, DB2B or DN2 equipment. • All the channels are fully programmable for following characteristics: 9 9 9 9 9
Channel Use Channel time slot allocation 1-15 & 17-31 Operating Mode Selection: DCE/DTE, Inverted/Not Inverted Tx Clk. Channel Loopbacks Loopback Timeouts
The typical applications are: 9 Router X.21 Serial WAN interface extension 9 SCADA RTU & Master connectivity 9 Data communication for other type of applications 85
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Data Interface Unit : DIU X.21 •
•
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The DATU-E block handles functions associated with data transmission on five channels. 9
It picks up from the databus the data out of time slot allocated for the data channel concerned, eight data bits at a time and places data on X.21 line interface at designated rate (48/56/64 kbit/s)
9
The data is received from X.21 line and transmitted in octets into the time slot allocated for the data channel concerned.
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In DCE mode, contra direction, the timing 114 & 115 are extracted from T2M & R2M signals,respectively.
9
In DTE mode, co direction data received from DTE is synchronised with timing received from DTE. Buffering (BUF1 & BUF2) is used for correction of deviation between external & internal timing (local clock slips). This deviation is corrected by slips in buffer.
The SBUIP circuit transfers control signal between terminal and the MUX unit. The processor reads states of signal from SBUIP circuit at certain intervals and transfers to
Data Interface Unit : DIU, X.21
LOOPBACKS •
Loop to Interface : Data coming from X.21 interface looped back to interface
•
Loop to equipment : Data coming from designated timeslot of the channel is looped back to MUX.
INTERFACE LOOPBACK
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EQUIPMENT LOOPBACK
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DIU X.21 – Service Menu
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DIU X.21 – Service Menu
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DIU X.21 – Service Menu
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Trouble Shooting Of DIU X.21 Unit
Power Supply Fault Step 1: • - Check the incoming voltage level and the unit operating voltages (TOP,7,9,u,1..). Check for abnormality in measurement. - Calibrate the voltages (TOP 9,9,u,1..).
Step 2:
If the above measures do not solve the problem. Remove the unit and re-inset back into designated slot
Step 3:
If the problem still persists, then there might be possibility of power supply section failure. No incoming 64 k signal • This alarm is due to missing received signal or the received clock signal is missing
Step 1:
Check that data cable is connected properly or DTE device is not in power off condition.
Buffer overflow (underflow) This alarm appears when slip alarm limit has exceeded. •
Step 1:
- Ensure that slips are within allowed limits. - Disable alarm using ST menu “TOP,6,9,u,3,n,4,1,1/2,2 Tx/Rx buffer slip alarm disable” Forced Indication
Step 1:
- Check that either RED or ORANGE LEDs are not FORCED ON. - Using ST menu TOP,5,9,u,1 the LEDs can be normalised which should remove alarm 91
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SUBSCRIBER EXCHANGE CHANNEL UNIT
SUBSCRIBER EXCHANGE CHANNEL UNIT SUB/EXCH TU 21216
92
Commtel Networks Proprietary
Subscriber/Exchange Channel unit : SUB/EXCH
SUBSCRIBER EXCHANGE CHANNEL UNIT : TU 21216 • The 5T size card consists of 6 x 2W FXO (Foreign Exchange Office) interfaces. • The application is to extend the Analogue extension of PABX to far end.
• Each card has on-board DC/DC convertor & operates in range of –20 VDC to –72 VDC. • The SUB/EXCH card has 2 Mbit/s bus interface for establishing connection to DM2, DB2B or DN2 equipment.
• All the channels are fully programmable for following characteristics: 9 Channel Use 9 Channel time slot allocation 1-15 & 17-31 9 Level setting 9 Metering Signalling Logic 93
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Subscriber/Exchange Channel unit : SUB/EXCH
KEY FEATURES Impulse (Rotary)/ DTMF dialling • Ground Key function regeneration • Forwarding of Polarity Reversal information to SUB/SUB unit • Loop forwarding to SUB/SUB unit • Ringing detection • Metering (12 KHz) • Protection against hazardous voltages (mains voltages and residual voltages due to lightning) by a protection circuitry • Compliant to ITU-T G.712, G.713 & Q.552 with some exceptions • Minimum Voltage (the Criterion voltage at exchange) : - 43 VDC
94
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SUB/EXCH SERVICE MENU
95
Commtel Networks Proprietary
SUB/EXCH SERVICE MENU
96
Commtel Networks Proprietary
SUB/EXCH SERVICE MENU
97
Commtel Networks Proprietary
SUB/EXCH SERVICE MENU
98
Commtel Networks Proprietary
SUB/EXCH SERVICE MENU
99
Commtel Networks Proprietary
SUB/EXCH SERVICE MENU
SUB/EXCH Default Settings
100
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TROUBLE SHOOTING OF SUB/EXCH UNIT
AIS Timeslot 16 alarm
Step 1:
Check which channel receives this alarm.
Step 2:
Ensure that the timeslot allocated for the channel is dropped from Dir. 1 or 2 in case of DB.
Step 3:
Ensure that corresponding channel at far end station is ON and the timeslot allocated for the channel is dropped from Dir. 1 or 2 in case of DB.
Blocked from Use or Timeslot Queuing (qn)
Step 1:
Check that same Timeslot is not allocated to other channel of same unit or channels of other units
Step 2:
Allocate another vacant timeslot. In case of DB-2B, the dropped timeslot can be different from Dir. 1 or 2.
Sometimes this alarm appears immediately after allocation of timeslot, however in case of non-conflict, the alarm clears automatically.
101
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TROUBLE SHOOTING OF SUB/EXCH UNIT
Power Supply Fault
Step 1: Check the criterion voltage (B1) which should be > -43 VDC.
Generally incoming supply voltage from charger is used as Criterion voltage source and hence check the incoming supply voltage. Step 2: If the voltage is correct then calibrate the B1 voltage using ST/MSTE (TOP,7,9,u,1,2,1)
Fault in Current Loop
Step 1: Ensure that DC current in subscriber loop is not excessive.
Equipment Fault - This indicates fault in EEPROM memory or Unit Power Supply.
102
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NOKIA CHANNEL UNITS
SUBSCRIBER SUBSCRIBER CHANNEL UNIT SUB/SUB TU 21206
103
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Subscriber/Subscriber Channel unit : SUB/SUB
SUBSCRIBER SUBSCRIBER CHANNEL UNIT : TU 21206 • The application is: •The 5T size card consists of 6 x 2W FXS (Foreign Exchange Subscriber) interfaces. 9
To drop the Analogue extension of PABX with SUB/EXCH at far end
9
To drop the Analogue extension of PABX via 2.048 Mbit/s link to Digital Exchange
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Commtel Networks Proprietary
Subscriber/Subscriber Channel unit : SUB/SUB
9
To setup Hot Line connectivity between two stations
• Each card has on-board DC/DC convertor & operates in range of –20 VDC to –72 VDC. • The SUB/SUB card has 2 Mbit/s bus interface for establishing connection to DM2, DB2B or DN2 equipment. • The SUB/SUB unit requires external ringing supply from RING GENERATOR for extending ring to subscriber telephone unit. • All the channels are fully programmable for following characteristics: 9 Channel Use 9 Channel time slot allocation 1-15 & 17-31 9 Level setting 9 Metering Signalling Logic
105
Commtel Networks Proprietary
Subscriber/Subscriber Channel unit : SUB/SUB
KEY FEATURES Impulse (Rotary)/ DTMF dialling • Ground Key function regeneration • Forwarding of Polarity Reversal information to SUB/SUB unit • Ring forwarding to subscriber telephone unit • Metering (12 KHz) • Protection against hazardous voltages (mains voltages and residual voltages due to lightning) by a protection circuitry • Compliant to ITU-T G.712, G.713 & Q.552 • Minimum Voltage (the Criterion voltage at exchange) : - 43 VDC
106
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SUB/SUB SERVICE MENU
107
Commtel Networks Proprietary
SUB/SUB SERVICE MENU
108
Commtel Networks Proprietary
SUB/SUB SERVICE MENU
109
Commtel Networks Proprietary
SUB/SUB SERVICE MENU
110
Commtel Networks Proprietary
SUB/SUB SERVICE MENU
111
Commtel Networks Proprietary
SUB/SUB SERVICE MENU
112
Commtel Networks Proprietary
SUB/SUB SERVICE MENU
113
Commtel Networks Proprietary
SUB/SUB SERVICE MENU
114
Commtel Networks Proprietary
SUB/SUB SERVICE MENU
115
Commtel Networks Proprietary
TROUBLE SHOOTING OF SUB/SUB UNIT
AIS Timeslot 16 alarm
Step 1:
Check which channel receives this alarm.
Step 2:
Ensure that the timeslot allocated for the channel is dropped from Dir. 1 or 2 in case of DB.
Step 3:
Ensure that corresponding channel at far end station is ON and the timeslot allocated for the channel is dropped from Dir. 1 or 2 in case of DB.
Blocked from Use or Timeslot Queuing (qn)
Step 1:
Check that same Timeslot is not allocated to other channel of same unit or channels of other units
Step 2:
Allocate another vacant timeslot. In case of DB-2B, the dropped timeslot can be different from Dir. 1 or 2.
Sometimes this alarm appears immediately after allocation of timeslot, however in case of non-conflict, the alarm clears automatically.
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TROUBLE SHOOTING OF SUB/SUB UNIT
Power Supply Fault
Step 1:
Check the criterion voltage (B1) which should be > -43 VDC.
Generally incoming supply voltage from charger is used as Criterion voltage source and hence check the incoming supply voltage. Step 2:
If the voltage is correct then calibrate the B1 voltage using ST/MSTE (TOP,7,9,u,1,2,1)
Installation Error
- This alarm is due to software incompatibility with hardware. Step 1:
Ensure that software version is compatible with hardware.
Step 2:
Ensure that two unit’s have not been accidentally inserted into each other’s slot in subrack.
Equipment Fault - This indicates fault in EEPROM memory or Unit Power Supply.
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RING GENERATOR UNIT
RING GENERATOR UNIT RING GEN T37885.02
118
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RING GENERATOR UNIT
Ring Generator : T37885.01/2 • The 5T size card consists provides ringing voltage to subscriber telephone units. • The Ring generator is interfaced with SUB/SUB unit via subrack backplane. • The Ring Generator is activated by REN signal from SUB/SUB signal or alternatively RING generator can be kept ON continuously by setting ‘Keyed’ jumper. • The Ring generator output voltage is 75 Vrms or 90 Vrms, selectable by jumper setting. • The Ring generators’ ringing frequency can be selected as 25 or 50 Hz as shown below:
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NOKIA CHANNEL UNITS
VOICE FREQUENCY CHANNEL UNIT VF E&M TU 21236.00
120
Commtel Networks Proprietary
Voice Frequency Channel unit : VF E&M
VF E&M CHANNEL UNIT : TU 21236.00 • The 5T size card consists of 8 x VF 2W or 4W interfaces. • Each card has on-board DC/DC convertor & operates in range of –20 VDC to –72 VDC. • Each VF interface has one/two E&M DC signalling channel. • The VF card has 2 Mbit/s bus interface for establishing connection to DM2, DB2B or DN2 equipment. • All the channels are fully programmable for following characteristics: 9 Channel Use 9 Channel time slot allocation 1-15 & 17-31 9 Two wire or Four wire VF interface selection 9 Level setting, separately for two wire or four wire interfaces 9 Signalling Logic 9 Balance impedance • The typical applications are: 9 Extension of PABX VF trunks 9 Legacy voice interface 2W / 4W 9 Omnibus Conference communication channel 121
Commtel Networks Proprietary
VF E&M SERVICE MENU
122
Commtel Networks Proprietary
VF E&M SERVICE MENU
123
Commtel Networks Proprietary
VF E&M SERVICE MENU
124
Commtel Networks Proprietary
VF E&M SERVICE MENU
125
Commtel Networks Proprietary
VF E&M SERVICE MENU
126
Commtel Networks Proprietary
TROUBLE SHOOTING OF VF E&M UNIT
AIS Timeslot 16 alarm
Step 1: Check which channel receives this alarm.
Step 2: Ensure that the timeslot allocated for the channel is dropped from Dir. 1 or 2 in case of DB.
Step 3: Ensure that corresponding channel at far end station is ON and the timeslot allocated for the channel is dropped from Dir. 1 or 2 in case of DB. Blocked from Use or Timeslot Queuing (qn)
Step 1: Check that same Timeslot is not allocated to other channel of same unit or channels of other units
Step 2: Allocate another vacant timeslot. In case of DB-2B, the dropped timeslot can be different from Dir. 1 or 2.
Sometimes this alarm appears immediately after allocation of timeslot, however in case of non-conflict, the alarm clears automatically. 127
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SECTION - 3
Nokia Management System
128
Commtel Networks Proprietary
NOKIA NMS/10 C6.1
NMS/10 BASIC CONCEPTS •
Transmission business is very fragmented
9 A lot of different kind of nodes and interface cards 9 New versions and variants are released very frequently •
NMS/10 manages all Nokia transmission equipment, and selected 3rd party nodes
•
Very flexible System Architecture
•
Affordable and easy to use PC based Management tool
•
Allows Fast Implementation of Networks
•
Scalable Solutions
•
Uses Industry standard Interfaces (SNMP)
•
Ability to manage the DCN (FM)
129
Commtel Networks Proprietary
NOKIA NMS/10 C6.1
NMS/10 - COMPETITIVE ADVANTAGES FULL EMS FUNCTIONALITY :
SIMPLE
Entry level network management system for small and medium size transmission networks - fast rollout FM, CM and PM for all Nokia transmission elements
Easy to install, commission and use (familiar Windows environment) Training investments minimised
MODULAR ARCHITECTURE
SCALABILITY -Build as you go –
Fast and easy integration of management support for new network elements as they are released
Safe investment: Nokia develops NMS/10 system for future
PCPC-BASED Reliable and secure well-known operating environment Price effectiveness Fast delivery - standard PC can be used Cheap system support & low training costs
130
Commtel Networks Proprietary
NOKIA NMS/10 C6.1
NOKIA NMS/10 C6.1 : HP OPENVIEW GUI
IP IPnetworks networks
Transmission Transmission networks networks
Integrated management of transmission and IP networks using the platform from worldwide market leader in network management platforms
131
Commtel Networks Proprietary
NOKIA NMS/10 C6.1
•
Distributed system:
9 Management Consoles 9 Management Station
NMS/10 Management Console(s)
TCP/IP
9 Management Agents •
Multipurpose Agents are interfaces to the managed
NMS/2000
networks •
Management Station includes all centralised functions (DB,
UI) •
NMS/10 Management Station
Management Station can be accessed remotely using
Management Consoles •
SNMP
Remote use of Node Managers requires WTS - node
LAN TCP/IP
managers are to be installed into agents or a separate server •
Internet Access to Agents and Alarms
NMS/10 Management Agent(s)
SDH
132
Commtel Networks Proprietary
SDH Radio
PDH
XXX
NOKIA NMS/10 C6.1 NMS/10 Main Station •
Proprietary management interfaces converted to open, standard SNMP interface
9 Hide differences between different network element interfaces •
Agents can reside in the same PC
•
Agent tasks:
9 Collect alarms from network elements 9 Store the data in the Agent MIB
SNMP
9 Pass alarms to NMS using SNMP traps •
LAN
Node Managers to configure nodes can be put on the same PC or in a separate machine.
DCN Adaptor
MF Q1 Bus PDH NODES
133
Commtel Networks Proprietary
NOKIA NMS/10 C6.1
All in one PC solution
9 NMS/10 System Frame and HP OpenView NNM
Q3
Synfonet
9 Node managers in the same PC
9 Use the same platform to manage SNMP managed IP
SNMP
products
Note:
DCN Adaptor
MF Up to 3 x MF's with a total capacity of 5000 PDH/PRE NE's of 9000 FE's
134
Q1 PDH PRE
Up to 200 FE’s per bus and upto 600 FE’s per DCN adapters and total 6 DCN per one System Frame Commtel Networks Proprietary
- MF is always a separate industrial PC.
- SDH Synfonet management requires a dedicated PC
NOKIA NMS/10 C6.1 •
When the network grows, new agents can be added to the system,Because of the new network regions, new management sites may also be needed:
IP
9 NMS/10 can be accessed remotely 9 Other NMS can share the same
SNMP
agents
File Mode Hide Utils Window
View Tampere.fin
•
IP
Mode Alarms
IP network components can be managed using the same platform
SNMP •
Capacity of the system:
SNMP
Q3 Synfonet
135
NNP SDH Radio
Q1 PDH PRE
Q3 Synfonet
Commtel Networks Proprietary
9
9000 Q1 FE (3 full MFs)
9
Over 3500 Q1 FE (6 DCN)
9
300 SYNFONET NEs (100/agent)
9
100 SDH Radios
NOKIA NMS/10 C6.1
9
Upwards: Open, industrial standard SNMP interface from Agents to any NMS supporting SNMP
Other NMS
9 File Mode Hide Utils Window
View
PDH PRE Synfonet
136
NMS/10
Tampere.fin
Mode Alarms
SDH Radio
Commtel Networks Proprietary
Downwards: Management of SNMP managed devices (e.g. DCN Components)
NOKIA NMS/10 C6.1 Interfaces to other systems - Alarm spooling - SNMP - Email MW Radios NMS/10
SDH
Mediation Device PDH PRE Current alarm view Database Alarm History 137
Commtel Networks Proprietary
NOKIA NMS/10 C6.1 Root
138
Commtel Networks Proprietary
NOKIA NMS/10 C6.1 Nokia
139
Commtel Networks Proprietary
NOKIA NMS/10 C6.1 Agents
140
Commtel Networks Proprietary
NOKIA NMS/10 C6.1 Equipments
141
Commtel Networks Proprietary
NOKIA NMS/10 C6.1 Sup. Buses
142
Commtel Networks Proprietary
NOKIA NMS/10 C6.1 C.
Alarms
143
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NOKIA NMS/10 C6.1 C.
Alarms
144
Commtel Networks Proprietary
NOKIA NMS/10 C6.1 H.
Alarms
145
Commtel Networks Proprietary
NOKIA NMS/10 C6.1 H.
Alarms
146
Commtel Networks Proprietary
NOKIA NMS/10 C6.1 Alarm Purge
147
Commtel Networks Proprietary
NOKIA NMS/10 C6.1 Alarm Filter
148
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NOKIA NMS/10 C6.1 NODE MGR
149
Commtel Networks Proprietary
NOKIA NMS/10 C6.1
150
Commtel Networks Proprietary
NOKIA NMS/10 C6.1
151
Commtel Networks Proprietary
NOKIA NMS/10 C6.1
152
Commtel Networks Proprietary
NOKIA NMS/10 C6.1
153
Commtel Networks Proprietary
NOKIA NMS/10 C6.1
154
Commtel Networks Proprietary
NOKIA NMS/10 C6.1
155
Commtel Networks Proprietary
NOKIA NMS/10 C6.1
156
Commtel Networks Proprietary
NOKIA NMS/10 C6.1
157
Commtel Networks Proprietary
NOKIA NMS/10 C6.1
158
Commtel Networks Proprietary
NOKIA NMS/10 C6.1
PM PMdata datacollected collectedfrom fromSDH, SDH,PDH, PDH,MW MWand andNT NT elements elementscan canbe bepost-processed post-processedusing usingexternal externaltools tools DM2/1 ST4
MW Radios
6 4 2
SDH
NMS/10
98-04-05 00:10:53 01.066.00 DF140/2 ST1 02.0c9.00 DF140/1 ST2 02.0c9.00 DF140/1 ST2 02.0c9.00 DF140/1 ST2 02.0c9.00 DF140/1 ST2 02.0c9.00 DF140/1 ST2 03.191.00 DM2/1 ST4 01.067.00 CO140 ST1 02.0cb.00 CO140 ST2 03.191.00 DM2/1 ST4 01.067.00 CO140 ST1 01.067.00 CO140 ST1 01.067.00 CO140 ST1 01.067.00 CO140 ST1 01.067.00 CO140 ST1 01.067.00 CO140 ST1 01.067.00 CO140 ST1 02.0cb.00 CO140 ST2 02.0cb.00 CO140 ST2 02.0cb.00 CO140 ST2 02.0cb.00 CO140 ST2 02.0cb.00 CO140 ST2 02.0cb.00 CO140 ST2 02.0cb.00 CO140 ST2 03.191.00 DM2/1 ST4 01.068.00 DM140 ST1 01.068.00 DM140 ST1 01.068.00 DM140 ST1 01.068.00 DM140 ST1 01.068.00 DM140 ST1 02.0cc.00 DM140 ST2
Mediation device PDH PRE
159
0
Commtel Networks Proprietary
98-04-05 00:15:53 TRANSM TRANSM TRANSM TRANSM TRANSM TRANSM TRANSM TRANSM TRANSM TRANSM TRANSM TRANSM TRANSM TRANSM TRANSM TRANSM TRANSM TRANSM TRANSM TRANSM TRANSM TRANSM TRANSM TRANSM TRANSM TRANSM TRANSM TRANSM TRANSM TRANSM TRANSM
DF140_g821 DF140_g821 DF140_g821 DF140_g821 DF140_g821 DF140_g821 DM2_errors CO140_resets CO140_resets DM2_errors CO140_g821 CO140_g821 CO140_g821 CO140_g821 CO140_g821 CO140_g821 CO140_g821 CO140_g821 CO140_g821 CO140_g821 CO140_g821 CO140_g821 CO140_g821 CO140_g821 DM2_errors DM140_g821 DM140_g821 DM140_g821 DM140_g821 DM140_g821 DM140_g821
CRC
98-04-05 00:20:53 Optical DM Optical TT Optical AT Optical ES Optical SES Optical DM 2M FAE Cpu resets Cpu resets 2M FAW 140M TT 140M AT 140M_SAT_A 140M_SAT_B 140M ES 140M SES 140M DM 140M TT 140M AT 140M_SAT_A 140M_SAT_B 140M ES 140M SES 140M DM 2M CRC 140M TT 140M AT 140M ES 140M SES 140M DM 140M TT
98-04-05 00:25:53
98-04-05 00:30:53
15min 98-04-05 00:10:52 1.17549e-038 900 900 15min 98-04-05 00:10:52 1.17549e-038 15min 98-04-05 00:10:52 1.17549e-038 15min 98-04-05 00:10:52 1.17549e-038 15min 98-04-05 00:10:52 0 15min 98-04-05 00:10:52 13 15min 98-04-05 00:10:52 13 15min 98-04-05 00:10:52 0 15min 98-04-05 00:10:53 899 15min 98-04-05 00:10:53 899 15min 98-04-05 00:10:53 1.17549e-038 15min 98-04-05 00:10:53 899 15min 98-04-05 00:10:53 1.17549e-038 15min 98-04-05 00:10:53 1.17549e-038 15min 98-04-05 00:10:53 1.17549e-038 15min 98-04-05 00:10:53 899 15min 98-04-05 00:10:53 899 15min 98-04-05 00:10:53 1.17549e-038 15min 98-04-05 00:10:53 899 15min 98-04-05 00:10:53 1.17549e-038 15min 98-04-05 00:10:53 1.17549e-038 15min 98-04-05 00:10:53 1.17549e-038 15min 98-04-05 00:10:53 0 15min 98-04-05 00:10:53 899 15min 98-04-05 00:10:53 899 15min 98-04-05 00:10:53 1.17549e-038 15min 98-04-05 00:10:53 1.17549e-038 15min 98-04-05 00:10:53 1.17549e-038 15min 98-04-05 00:10:53 899
15min 98-04-05 00:10:52 FAE15min FAW 98-04-05 00:10:52
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
NOKIA NMS COMPONENTS
TRANSMISSION MANAGEMENT SYSTEM ADAPTOR TMS TC 21710.01
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Commtel Networks Proprietary
TMS AD : TC 21710.01
• The 5T size TMS Adaptor forms an integral part of the Nokia Transmission Management System. It provides a means for the logical connection of multiple bus masters (i.e. Service Terminal, TMC, PC-TMC) to a single TMS Service Bus. • The TMS Adaptor has three ports viz. Port ‘A’ , ‘B’ and ‘C’. Both Port ‘A’ & Port ‘B’ are used for connection of Bus Master to TMS Service bus (MI) via Port ‘C’. • The basic operation of this equipment involves the reception and buffering of incoming commands from the bus masters (Ports A & B), retransmission of these messages (in order of reception) onto the service bus (Port C), waiting for a reply, then forwarding the reply to the appropriate bus master. • The TMS adaptor can connect up to maximum 32 Network Elements on Port ‘C’ service bus. Port ‘C’ speed can be higher than Port ‘A’ & Port ‘B’ & more than 1200 baud. • The TMS adaptor has on-board DC/DC convertor & operates in range of –20 VDC to –72 VDC. • The TMS adaptor is fully programmable for following characteristics: 9 Port Type : TMC or ST 9 Port Interface Type : V.11 or V.28 or RS-485 9 Port Speeds 9 Port C Timeouts 9 TMS address and NE count
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TMS AD : TC 21710.01
•
A1
Port ‘A’ : 3 x V.11 or
A2
2 x V.11 + 1 x V.28
A3
•
Port ‘B’ : 2 x V.11 + 1 x RS-485
A4
or 2 x V.11 + 1 x V.28
B1
•
Port ‘A’ : TMC / NMS
•
Port ‘B’ : ST
•
At a time only one BUS Master in Port ‘A’ & ‘B’
•
TMS Adaptors must not be cascaded as this can cause response delays which are longer than the Service Terminal or TMC timeout.
B2 B3 B4
162
Commtel Networks Proprietary
TMS AD : TC 21710.01 NMS/10 PC
TMS Adaptor
Port A
NMS REQ.
Service Terminal/LCT
163
ST REQ.
x
Port C
NE REPLY
DB-2B
NMS REQ.
Local MI Bus
NE REPLY
Port B
DM2+
Commtel Networks Proprietary
ST REQ.
DF2-8
TMS ADAPTOR : SERVICE MENUS
164
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TMS ADAPTOR : SERVICE MENUS
165
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TMS ADAPTOR : SERVICE MENUS
166
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TMS ADAPTOR : SERVICE MENUS
167
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TROUBLE SHOOTING OF TMS ADAPTOR
Power Supply Fault • Step 1: - Check the incoming voltage level and the unit operating voltages (TOP,7,9,u,1..). Check for abnormality in measurement.
Step 2:
If the above measures do not solve the problem. Remove the unit and re-inset back into designated slot
Step 3:
If the problem still persists, then there might be possibility of power supply section failure. Memory Fault This alarm is due to failure of memory of TMS adaptor. This Orange LED will glow. •
Step 1:
Check that by re-inserting the unit whether alarm goes off, otherwise send the unit for repair. Fault Database Full • The fault database contains at least 277 faults and 829 faults at the most. The minimum size 277 is applicable if the NEs
contains several FEs and each FE gives one fault. Currently only the Supervisory Substation (TC 21705) & Flexihopper contains more than one FE. Therefore, the database size is normally 829. If the fault database becomes full, the TA issues the alarm ”database full” and the yellow LED is lit. After this the faults of the subnetwork equipment will not be stored into the fault database of the TMS Adaptor before earlier faults are removed to create space for new faults Step 1:
Reset the TMS Adaptor by the Port type menu function (e.g. for Port A 6,2,1,1 Port type TMC or 6,2,1,2 Port type ST)
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TROUBLE SHOOTING OF TMS ADAPTOR
I am not able to access any NE connected to TMS adaptor •
It is assumed that you have direct access to TMS adaptor and the installation is existing meaning no wiring problem in the TMN network. Also there is no alarm in TMS adaptor such as Database Full and you are able to access the TMS adaptor directly. Step 1: -
Check that Green LED of TMS Adaptor is flashing (Generally Port A connected NMS, flashes Green LED on activity).
Step 2: -
Connect ST to Port B. Check the speeds & Port Type of Port A and B for correctness as per design value. (Generally Port A is TMC type @9600 baud and Port B is Service Terminal type @ 4800 baud)
Step 3: -
Check by isolating the Q1 DCC path from East side & then West side.
Step 4: -
Check that NE address is within “ TMS Adaptor’s own address + NE count” range.
Step 5: -
Re-insert the TMS adaptor.
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Commtel Networks Proprietary
Many Thanks Indeed !!! www.commtelnetworks.com
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