ALCATEL 1660 SM
ALCATEL 1660SM
Sub--assemblies Description Sub
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1660 Subassemblies Description -Index
1. Section I :
ALCATEL 1660SM - Boards description
2. Section II:
Acronyms
ALCATEL 1660 SM
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ALCATEL 1660 SM
Section I ALCATEL 1660SM Boards Description
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ALCATEL 1660 SM
Basic Area Boards
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1.1. P63E1 Port Card: Front View
ALCATEL 1660 SM
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1.1. P63E1 Port Card: 63x2Mb/s
ALCATEL 1660 SM
P63E1 interfaces 63 x 2Mbit/s signals to STM4-BPF signal (BPF=back panel format) with AU4#1 of the STM-4* frame
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1.1. P63E1N Port Card: Front View
ALCATEL 1660 SM
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1.1. Notes: 21 x 2 Mbit/s G.703/ISDN-PRA
ALCATEL 1660 SM
The 63 x 2 Mbit/s /G.703/ISDN-PRA port is similar to the basic 63 x 2 Mbit/s port, described in the previous pages, with the difference that the present board implements also the NT functionality on ISDN Primary Rate Access (PRA) and the "Retiming function" on the 2 Mbit/s interfaces.
Retiming The Retiming function applies the Equipment Clock to the outgoing 2Mb/s signal that therefore becomes synchronized with the SDH network synchronization reference . This feature is programmable via SW, in order to include or exclude the Retiming for each single port. The same P63E1N unit can mix ports that apply or not the retiming.
The ISDN-PRA (Integrated Services Digital Network - Primary Rate Access) is a facility to carry a number of synchronous digital communication channels to the user over a 2048 kbit/s structured signal; the ISDN- PRA structure is defined in recommendation ETS 300 233. The sample frames are reported in the next pages.
The 2048 kbit/s signals can be structured or non-structured: in this latter case, the PRA functionality must be disabled from Craft-Terminal. The selection between structured/non-structured and basicframe/multiframe options is achieved by means of Craft-Terminal, for individual signals. It performs standard PRA functionality as well as some custom Leased Line functions (settable from C.T.).
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1.2. P3E3/T3 Port Card: Front View
ALCATEL 1660 SM
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1.2. P3E3/T3 : 3x34Mb/s or 3x45Mb/s
ALCATEL 1660 SM
Notes SDH functions are preformed by four Gate Array, one for each port and one that is common to the three ports. 34/45 Mbit/s interface: PPI functions are according to G.703 Rec; they are implemented in the relevant Access Card. INPUT side and OUTPUT side • LPA: asynchronous mapping/demapping of 3x34 /45 Mbit/s into/from C-3 • LPT : POH processing • STM-4 & timing G.A. provides to connect the three ”34/45 Mbit/s interface” to the backpanel.
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1.3. P4S1N / P4E4N Port Card: Front View
ALCATEL 1660 SM
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1.3. P4S1 Port Card: 4xSTM1 E/O
ALCATEL 1660 SM
Notes P4S1 Port card processes up to four STM-1 streams. A max. of two electrical or optical modules can be housed on the card to give physical access to the STM-1 signal. The remaining two physical accesses are on the relevant Access Card . The main parts of the cards are: • • • • •
Mother board, supporting the overall structure; Cristallo ASIC STM1 Modules Timing, Control and Power Supply circuits Details of internal structure of each block are shown in the next slide.
SDH functions needed to process STM-1 signals are implemented by the Cristallo ASIC mounted on the mother board. It interfaces the two MATRIX card via backpanel. Main connection toward the MATRIX is performed by three links at 622Mb/s: Link L toward LPC Matrix Link H and Link X toward HPC Matrix.
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1.3. Notes: P4E4N Port Card
ALCATEL 1660 SM
The 4x140/STM1 switchable O/E port card is a bi- directional unit which interfaces up to four plesiochronous 140 Mbit/s (E4) or Synchronous 155 Mbit/s (STM-1) with STM4-BPF (BPF=backpanel format ).
The choice between the two possible different interfaces is flexible and mixed configuration are allowed.
For each P4E4N port card there are four electrical (75 Ohm) or optical module(Short and Long Haul) ; two of the four module are hosted directly on the port card , the other two are hosted in the relevant access card (A2S1).
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1.4. P4ES1 Port Card: Front View
ALCATEL 1660 SM
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1.4. P4ES1 Port Card: 4xSTM1 Interfaces
ALCATEL 1660 SM
Notes P4ES1 Port Card supports 4xSTM1 streams and has the same structure as already described for P4S1 Port Card in the previous slide 1.3.
The only difference compared with P4S1 is in the access interfaces, that are all 4 in a dedicated Access Card (A4ES1).
This card, together with the relevant A4ES1 Access Card, allows to implement Electrical STM1 ports with EPS, while P4S1 allows to implement only APS protection.
Future releases will extend the use of this board to 140 E4 interfaces, with Sw switchable presetting.
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1.5. STM4 Interface: Front View
ALCATEL 1660 SM
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1.5. STM4 : S/L-4.x Port Card
ALCATEL 1660 SM
Notes Main parts of STM4 Port Card are: Motherboard, Cristallo ASIC, STM4 Optical Module (SPI) and Circuits for: Control, Timing and Power Supply. Functions performed by the CRISTALLO ASIC at Rx and Tx side are: TTF ( SPI, RST, MST, MSA) HOA (HPT, HPA): this block includes F2-F3 byte extraction/insertion for a DCC_P channel frame . Connection with MATRIX is performed by 3 links at 622Mb/s: X, L and H Links. T1 clock at 2 MHz is extracted and sent to the Matrix card.
Different units are available with different connectors (FC/PC or SC/PC) and different wave length (S-4.1, L-4.1, L-4.2 and L-4.2JE). JE type STM4 is available in two options, with different max chromatic dispersion.
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1.6. STM16 Interface: Front View
ALCATEL 1660 SM
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1.6. STM16 Interface
ALCATEL 1660 SM
Notes Port identifier STM16 Port Card is identified by the name S / L-16.x where x=1 or 2. Different part number corresponds to different connector type, FC/PC or SC/PC or SC/SPC. The units identified by JE (Joint engineering, 3 types available) have improved optical characteristics, mainly for the dispersion values. The STM-16 with ”192.3 to 195.7” label (also defined ”coloured”), are used when interfaced with WDM equipment. That number indicates the central frequency (in THz) of the carrier optical signal, related to the wavelength : sixteen units are independently associated with different wavelength. The WDM equipment can receive up to sixteen different wavelength signals from sixteen different STM-16 optical ports.
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1.6. STM16 Interface
ALCATEL 1660 SM
Notes General Architecture SDH functions are implemented by four CRISTALLO ASIC’s ( ASIC#1 to ASIC#4) mounted on the board. They interface the two MATRIX boards via backpanel. A dedicated ASIC performs Mux/Demux of 4xSTM4 streams and loopback functions. This ASIC also interfaces the line side with one stream at 2488 Mbit/s. The following functions are performed by the 4 CRISTALLLO ASIC’s : • TTF (only the ASIC #1 ) • HOA (all ASIC’s from 1 to 4) • LPOM /LSUT (all ASIC’s from 1 to 4). • HPOM /HSUT ( only ASIC.#1).
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1.7. EQUICO: Front View
ALCATEL 1660 SM
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1.7. EQUICO Card
ALCATEL 1660 SM
Notes The following main functions of EQUICO card are performed by Equipment Controller (EC) local communication with Craft Terminal (F interface); communication with the OS through Q3 and DCC interface. communication with an external non-SDH equipment for Network Management operations through Q2 Interface
(Mediation Device Function);
alarm processing and indications: remote alarms (RE) , alarms towards the rack lamps (RA), housekeeping alarms (HK) and front cover LED; ISSB bus management: supporting communication between EC and SC function on the MATRIX Card
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1.8. MATRIXN Card: Front View
ALCATEL 1660 SM
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1.8. MATRIX Card
ALCATEL 1660 SM
Notes MATRIX card performs different functions, with 1+1 EPS : Connections between ports; Equipment Synchronization; Shelf Controller ; Performance Monitoring ; Power Supply; Remote Inventory. Connections: Connections between MATRIX and ports Shelf controller functions: SW functions related to the control and management operation of the boards (Management Bus; ISSB Intra Shelf Serial Bus; RIBUS) . Performance monitoring: Performance monitoring can be made at: Regeneration section; Multiplex section; Multiplex section Adaptation; HSUT and LSUT; HPOM and LPOM; HPT and LPT.
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1.8. MATRIX Card
ALCATEL 1660 SM
Notes Within the MATRIX the following SDH functions are implemented to activate the connections: MSP (Multiplex Section Protection)+ MS-SPRING AU4 squelching ( for MS-SPRING) SNCP: SNCP/I and SNCP/N HPC (High order Path Connection) (96x96 96x96 ports) ports LPC (Low order Path Connection) (64x64 64x64 STM1 equivalent signals at VC-12 level).
Equipment Synchronization: SETS function , with local oscillator at 10MHz, generating: T0 (at 622.08 MHz),· CK38Mhz (derived from T0 and distributed to all the ports; MFSY ( Multiframe synchronism at 500 Hz distributed to all the ports);2 MHz clock T4 , accessible from the SERVICE board.
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1.9. CONGI Card: Front View
ALCATEL 1660 SM
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1.9. External Accesses: CONGI Card FUNCTION IF INSERTED IN SLOT 10
FUNCTION IF INSERTED IN SLOT 12
1
GND
GND
2
NURG:Not urgent alarm
LOSQ2
3
URG :Urgent alarm
TANC: Loss of 3.3 V on one CONGI
4
TOR:OR battery
5
TAND:AND batteries
TORC: Loss of 3.3 V on both CONGI IND: indeterminate alarm (not used)
6
INT:Internal alarm
TUP: microprocessor fault
PIN
PS
15 9
8 1
Rack lamps
Q2
QB3
ALCATEL 1660 SM
7
HK-OUT1:Output parallel contact 1
8
HK-OUT2:Output parallel contact 2
HK-OUT3:Output parallel contact 3 HK-OUT4:Output parallel contact 4
9
Not Used
Not Used
10
HK-IN6:Input parallel contact 6
HK-IN12:Input parallel contact 12
11
HK-IN5:Input parallel contact 5
HK-IN11:Input parallel contact 11
12
HK-IN4:Input parallel contact 4
HK-IN10:Input parallel contact 10
13
HK-IN3:Input parallel contact 3
HK-IN9:Input parallel contact 9
14
HK-IN2:Input parallel contact 2
HK-IN8:Input parallel contact 8
15
HK-IN1:Input parallel contact 1
HK-IN7:Input parallel contact 7
Housekeeping and remote alarm
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1.9. CONGI Card
ALCATEL 1660 SM
Notes The 1660SM equipment can house two CONGI cards, referred as CONGI A (slot 10) and CONGI B (slot 12). They are not intended as main and spare : each card provides a set of functions . Both units are necessary to provide the complete set. CONGI A can be used as stand alone but in this case only a subset of interfaces are available. CONGI A and CONGI B interfaces : CONGI A
CONGI B
POWER
POWER
Housekeeping & Remote Alarms (a subset)
Housekeeping & Remote Alarms ( a subset)
Rack lamps (R/M)
Not used
QMD (Q2)
Not used
Q3 10 base 2
Not used
Q3 10 base T
Not used
INT led
INT led
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1.10. SERVICE Card: Front View
ALCATEL 1660 SM
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1.10. SERVICE Card
ALCATEL 1660 SM
Notes The SERVICE card provides the following functions : AUX (auxiliary) channels management; Input/output clock management; EOW channels management; POWER SUPPLY for internal board use. AUX channels management: • • • •
four G.703 64 Kbit/s channels, ITU-T G.703 compliant four V11 channels , every one composed by data input, data output and clock four RS-232 channels two 2 Mbit/s G.703 signals that can be used as auxiliary channels
Input/Output clock management: • the unit can receive two 2 MHz or 2Mbit/s clock signals that could be used to synchronise the N.E. (T3/T6) • the unit provides two 2 MHz or 2Mbit/s output clock signals (T4/T5) that can be used by another N.E. for synchronization purpose.
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1.10. SERVICE Card
ALCATEL 1660 SM
Notes EOW management allows to implement three different types of connections: • between two stations (selective call)(number of the equipment) • among three stations (multi-selective call) • omnibus call (one station is connected with all the other )(00)
To this purpose a telephone jack is present on the unit front panel. Two extension channels with different connectors (RJ45 and RJ11) are available to establish a connection with an external telephone set. Moreover the channel on RJ11 can be used to establish a connection with an external telephone network
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ALCATEL 1660 SM
Access Area: Boards
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1.11. A21E1(2 Mb/s coax): Front View
ALCATEL 1660 SM
21 x 2 Mbit/s 75 ohm port.
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1.11. A21E1 Access Card: 2 Mb/s coax
ALCATEL 1660 SM
Notes The front panel of A21E1 gives the access for 21x2Mb/s with coax 1.0/2.3. The card includes the protection switches for N+1 EPS protection
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1.11. A21E1(2 Mb/s balanced): Front View
21 x 2 Mbit/s 120 ohm prot.
ALCATEL 1660 SM
or 21 x 2 Mbit/s 120 ohm K20
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1.11. A21E1 Access Card :2 Mb/s balanced
PIN 1
19
2 3 4 5 6
20
1
7 8 9 10 11 12 13 14 15 16 17 18 19
SIGNAL GND GND GND Not Used Not Used Output Ch. 7, side a Input Ch. 7, side a Output Ch. 6, side a Input Ch. 6, side a Output Ch. 5, side a Input Ch. 5, side a Output Ch. 4, side a Input Ch. 4, side a Output Ch. 3, side a Input Ch. 3, side a Output Ch. 2, side a Input Ch. 2, side a Output Ch. 1, side a Input Ch. 1, side a
PIN 20 21 22 23
SIGNAL GND GND GND Not Used
24 25 26 27 28 29
Output Ch. 7, side b Input Ch. 7, side b Output Ch. 6, side b Input Ch. 6, side b
30 31
Output Ch. 4, side b Input Ch. 4, side b Output Ch. 3, side b Input Ch. 3, side b Output Ch. 2, side b Input Ch. 2, side b Output Ch. 1, side b Input Ch. 1, side b -
32 33 34 35 36 37 -
ALCATEL 1660 SM
Output Ch. 5, side b Input Ch. 5, side b
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1.11. A21E1Access Card: 2 Mb/s balanced
ALCATEL 1660 SM
Notes A21E1 has two options: • coax 75 ohm • symmetrical 120 ohm: in this cases two further options are possible: » Access card with protection switches for EPS » Access card with protection against overvoltage (ITU-K 20)
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1.12. A3E3 Access Card: Front view
ALCATEL 1660 SM
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1.12. A3E3 Access Card: 3x34Mb/s Interfaces
ALCATEL 1660 SM
Notes 3 X 34 Mbit/s access card provides connections from back-panel to the external signals for three PDH 75 ohmG.703 signals.
INPUT side From the HDB3 signal, clock is recovered and data are retimed and sent to an HDB3 decoder. LOS alarm is generated if no signal is detected. In normal condition the backplane provides to send the signal to the main card. . The access card manages the EPS protection of the 3x34/45 port card; two mux by means of dedicated command (SEL) coming from the RIBUS I/F block, sends to spare card Signal and LOS of actual or previous access card.
OUTPUT side NRZ data and clock from the main and spare port card are received. In normal condition, signal coming from the main port card is HDB3 encoded and sent to the line. When EPS is active, the RIBUS I/F block send a command (SEL) to the mux; in this case the signal coming from the spare card is selected and sent toward the encoder.
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1.12. A3E3 Access Card: 3x34Mb/s Interfaces
ALCATEL 1660 SM
Notes Loopback functions The access card provides line loopback (RLOP) and local loopback (LLOP).When RLOP is active the input signal coming from the line is sent back to the output signal.When LLOP is active, the signal coming from the encoder is sent to the decoder
Control section The commands to drive the MUXs involved in EPS protection (SEL) and the loopback functions (CLOP) are generated by the RIBUS I/F block that performs also remote inventory and card status operations (FAIL).
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1.13. A3T3 Access Card: Front View
ALCATEL 1660 SM
3 x 45 Mbit/s 75 ohm
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1.13. A3T3 Access Card : 34 Mb/s
ALCATEL 1660 SM
Notes A3E3 and A3T3 have the same front panel. They are both connected to a P3E3/T3 Port Card.
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1.14. A2S1 Access Card: Front View
ALCATEL 1660 SM
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1.14. A2S1 Access Card: 2xSTM1 E/O
ALCATEL 1660 SM
Notes A2S1 Access Card can house two independent modules that can be both electrical , both optical or a mix of the two. The Access Card houses also the RIBUS I/F block and the Remote Inventory.
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1.15. A4ES1 Access Card : Front View
ALCATEL 1660 SM
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1.15. A4ES1 Access Card: 4xSTM1/El.
ALCATEL 1660 SM
Notes The A4ES1 access card is placed in the access area and allows the connection to the line coaxial cable for the High Speed port cards 4x STM1 or 4x140 Mb/s. A4ES1 gives access to 4 STM1/El coming from P4ES1 Port Card. INPUT side CMI coming from the coaxial cable, is equalised, decoded into NRZ code and forwarded to main electrical port card. SWITCH criteria coming from the RIBUS I/F block can select the MUX in order to send toward the Spare card the local stream. LOS alarm, if present, is sent to the main board. The same alarm can also be sent ,through a MUX, toward the spare card if the SWITCH command is active.
OUTPUT side At output side, the signal coming from the Main card, is coded into CMI code and then sent toward the coaxial cable. When EPS is active, the RIBUS I/F block send a command (SWITCH) to the MUX; in this case the signal coming from the Spare card is selected and sent toward the encoder NRZ/CMI.
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1.15. A4ES1 Access Card: 4xSTM1/El.
ALCATEL 1660 SM
Notes Control section INT LOOP1 ... INT LOOP4: Internal Loop commands for channels from 1 to 4 LINE LOOP1 ... LINE LOOP4: Line Loop commands for channels from 1 to 4 FSEL for frequency selection 155/140 Mbit/s SWITCH allows EPS facility On the front cover plate a red/green led is available for card fail alarm indication.
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1.16. HPROT Front View
ALCATEL 1660 SM
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1.16. HPROT Protection Access Card
ALCATEL 1660 SM
Notes The HPROT access card is used to implement EPS protection for High Speed ports. ports It implements the connection between the Access Cards and Spare HS Port if protection is request. It receives the signals coming from the access card via back panel .
Control section The RIBUS I/F block is present to read/write inventory data as code, series number, construction data implemented on the RI. On the front cover plate a red/green led is available for card fail alarm indication.
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ALCATEL 1660 SM
1.17. STM1 Modules STM1 Optical INPUT
INPUT SPI sink
OUTPUT
OUTPUT
155Mb/s + Clock
SPI source ALS restart key
ALS restart key SC/PC
FC/PC
STM1 Electrical SPI sink
INPUT
155Mb/s + Clock
STM1 G.703 SPI source OUTPUT
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1.17. Notes:STM1 Modules
ALCATEL 1660 SM
Each STM1 module performs the following functions, corresponding to SPI block: The SPI sink function is implemented on Optical (or Electrical) Line-Modules. It interfaces the line signal and recovers the STM1 data and clock. In the case of the Optical Module it performs the optical to electrical conversion and detects also the LOS alarm. (Rx side) The SPI source function is implemented on Optical (or Electrical) Line-Modules. It receives (from GA) the STM1 data and clock and build-up the STM1 line signal. In the case of the Optical Module it detects also the Laser-Degrade, Laser-fail alarms and can receive the Laser-Shut-Down command (for ALS). (Tx side)
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ALCATEL 1660 SM
Section II ALCATEL 1660SM - Acronyms -
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3. Acronyms/1 ABIL Enabling ABN Abnormal ADM Add/Drop Multiplexer AIS Alarm indication Signal ALS Automatic Laser Shutdown APD Avalanche Photodiode APS Automatic Protection Switching AND Alarm on both station batteries ANSI American National Standards International ASIC Application Specific Integrated Circuit ATM Asynchronous Transfer Module ATTD Attended (alarm storing) AU Administrative Unit AUG Administrative Unit Group AUOH AU Pointer AUX Auxiliary AU4 Administrative unit – level 4 BATT Battery BER Bit Error Rate BIP Bit Interleaved Parity BNC Bayonet Not Coupling C Storing command CE European Conformity CO Central Office CPE Customer premises equipment CT Craft Terminal CMI Code Mark Inversion COAX Coaxial
ALCATEL 1660 SM
CPI Incoming parallel contacts CPO Outgoing parallel contacts CPU Central Processing Unit (referred to Controller equipment unit or Microprocessor) C12/C3/C4 1st, 3rd and 4th level container DC Direct Current DCC Data Communication Channel DCE Data Circuit Terminating Equipment DPLL Digital Phase Locked Loop DTE Data Terminal Equipment EBU European Broadcasting Union EC Equipment Controller ECC Embedded Control Channel ECT Equipment Craft Terminal EMC Electromagnetic compatibility EMI Electromagnetic interference EOW Engineering Order Wire EPS Equipment Protection Switching ESD Electrostatic discharges ETSI European Telecommunication Standards Institute E2PROM Electrically erasable programmable read only memory F Interface F (for Craft Terminal) or Fuse FEBE Far End Block Error FEPROM Flesh Electrically erasable programmable read only memory FERF Far End Receive Failure FPGA Field Programmable Gate Array GA Gate Array GND Ground
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3. Acronyms/2 HDB3 High Density Bipolar Code HIGHREFL High Optical reflections HOA High Order Adaptation HOI High Order Interface HPC High order Path Connection HPT Higher Order Path Termination HPOM High order Path Overhead Monitoring HSUT High order Supervisory Unequipped Termination HW Hardware ICS Item Change Status ID Identification signals IEC International Electrotechnical Committee IEEE Institute of Electrical and Electronic Engineering IN Input IND Indicative alarm INT Internal Local Alarms IP Internet Protocol ISO International Organism for standardization ITU–T (*) International Telecomm. Union–Telecomm.Sector JE1 Joint Engineering LAN Local Area Network LDSSHUT Command for ALS LED Light emitting diode LOF Loss of alignment LOI Low Order Interface LOM Loss Of Multiframe LOP Loss Of Pointer LOS Loss of signal LPA Lower order path adaptation
ALCATEL 1660 SM
LPC Lower order path connection LPOM Lower Order Path Monitoring LPT Lower order path termination or Loopback equipment side (local) LSUT Lower order Supervisory Unequipped Termination M Tagblock or Alarm storing MCF Message Communication Function MLM Multi Longitudinal mode MSA Multiplex section adaptation MSOH Multiplex Section Overhead MSP Multiplex section protection MST Multiplex section termination NRZ No return to zero NURG Not urgent alarm OH–BUS Dedicated housekeeping stream OOF Out Of Frame OR Logic sum/Loss of only one station battery OS Operating system OUT Output P/S Parallel/Serial converter PC Personal Computer PDH Plesiochronous Digital Hierarchy PFAIL Power supply failure PI Physical interface PJE Pointer Justification Event PPI Plesiochronous Physical interface POH Path Overhead PMMF Physical Machine Management Function PPS Path Protection Switching
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3. Acronyms/3 PRBS Pseudo Random Binary Signal PWALM supply alarm PWANDOR ANDOR/3 failure Q2/QB2 TMN Interface with B2 protocol. Q3/QB3 TMN Interface with B3 protocol. R Reset command /General alarm RAI Remote Alarm Indication RECC Recommendation RAM Random Access Memory RDI Remote Defect Indication REI Remote Error Indication RCK Received clock REF Reference REL Release RIBUS Remote Inventory BUS RMS Root Mean Square RNURG Not urgent Alarm. Lights up the relative rack LED RSOH Regenerator Section Overhead RST Regenerator Section Termination RURG Urgent Alarm. Lights up the relative rack red LED Rx Reception SC Shelf Controller SDH Synchronous Digital Hierarchy SETG Synchronous Equipment Timing Generation function SLM Single Longitudinal Mode SM Single Mode/Synchronous Mux SNCP/I Subnetwork Connection Protection Inherent
ALCATEL 1660 SM
SNCP/N Subnetwork Connection Protection/ Not Intrusive SOH Section Overhead S/P Serial/Parallel Converter SPI Synchronous Physical Interface SSF Server Signal Fail SQ Squelch STM–0/STM–1 Synchronous Transport Module, levels 0 etc. SW Software TANC Remote alarm due to failure of all power supply units TD Layout drawing TIM Trace Identifier Mismatch TMN Telecommunication Management Network TOR Remote alarm indicating loss of one of the station batteries TORC Remote alarm due to a faulty/missing power supply unit TSD Trail Signal Degrade TSF Trail Signal Fail TTF Transport Terminal Function TUG2/3 Tributary unit group, level 2,3 TUOH Tributary Unit Overhead TUP/UP Equipment Controller remote alarm TU12/TU3 Tributary unit level 12, 3 TX Transmission URG Urgent VCXO/VCO Voltage controlled oscillator VC12/VC3/VC4 Virtual Container, levels 12,3,4 VMMF Virtual Machine Management Function WAN Wide Access Network
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