Ericsson Marconi OMS 1200 Technical specifications

221 02-ZAP 701 25/1 Rev C 2006-08-04
Marconi OMS 1200
Optical MultiService Metro-Edge
Technical Product Description
Release 3.4

Marconi OMS 1200
Technical Product Description
221 02-ZAP 701 25/1 Rev C 2006-08-04 © Ericsson AB 2006
03PHB00004AAV-CUA Commercial in confidence
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Marconi OMS 1200
Technical Product Description
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Table of Contents
Table of Contents..................................................................................... 3
List of Figures .......................................................................................... 9
List of Tables .......................................................................................... 11
Chapter 1: About This Document ................................................13
1.1 Introduction ............................................................................... 13
Chapter 2: Product Description ...................................................15
2.1 Equipment Overview ................................................................. 15
2.1.1 Common Family Features .................................................................. 15
2.1.2 Deployment ........................................................................................ 16
2.1.3 Data Transport.................................................................................... 17
2.1.4 OMS 1240 with STM-1/4 Core Card - Summary................................ 17
2.1.5 OMS 1260 with STM-1/4 Core Card - Summary................................ 18
2.1.6 OMS 1200 with STM-4/16 Core Card - Summary.............................. 19
2.2 OMS 1240 Product Structure.................................................... 20
2.2.1 Subrack for OMS 1240....................................................................... 20
2.2.2 OMS 1240 Shelf and Cards ............................................................... 21
2.2.3 Cooling the OMS 1240 Subrack......................................................... 22
2.3 OMS 1260 Product Structure.................................................... 22
2.3.1 Subrack for OMS 1260....................................................................... 22
2.3.2 OMS 1260 Shelf and Cards ............................................................... 23
2.3.3 Cooling the OMS 1260 Subrack......................................................... 23
2.4 Power Supply Architecture....................................................... 23
2.4.1 Power/LCT LTU Cards ....................................................................... 24
2.4.2 Generic Tributary PSU/LTU Cards..................................................... 25
2.5 Line and Tributary Traffic and Comms Units.......................... 25
2.5.1 STM-1/4 Core Switch/Line/CCU Card................................................ 26

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2.5.2 STM-4/16 Core Unit ........................................................................... 26
2.5.3 OMS 1240 64x2Mbit/s Core Tributary Card and LTUs ...................... 27
2.5.4 OMS 1260 63 x 2Mbit/s Tributary Card and LTUs ............................. 28
2.5.5 Generic Tributary Units ...................................................................... 29
2.5.6 OMS 1260 Tributary Groups .............................................................. 31
2.5.7 Comms/Auxiliary/Ancillary Unit .......................................................... 32
2.5.8 SFP Tributary and Line Interfaces...................................................... 33
Chapter 3: Functional Overview ..................................................35
3.1 Network Management ............................................................... 35
3.2 Synchronisation ........................................................................ 35
3.3 Protection................................................................................... 36
3.3.1 MSP Protection................................................................................... 36
3.3.2 Sub-Network Connection Protection .................................................. 36
3.4 Cross Connections.................................................................... 37
3.5 Engineer’s Order Wire (EOW)................................................... 37
3.6 Other Licensed Operator's Networks ...................................... 38
3.6.1 Remote Management via VC-12 n x 64kbit/s Comms Channels....... 39
3.7 IP Management of Third Party Co-Located Equipment.......... 40
3.8 Tandem Connection Monitoring (TCM) ................................... 41
Chapter 4: Typical Applications...................................................43
4.1 Network Applications................................................................ 43
4.1.1 General............................................................................................... 43
4.1.2 Ring Application.................................................................................. 44
4.1.3 Broadcast ........................................................................................... 44
4.2 Point to Point ............................................................................. 45
4.3 Data Applications ...................................................................... 45
4.3.1 Ethernet Private Line.......................................................................... 45
4.4 Network Management Channel Communications
Configuration............................................................................. 45

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4.4.1 OMS 1240 Product............................................................................. 45
4.4.2 OMS 1260 Product............................................................................. 46
Chapter 5: Power Consumption...................................................47
5.1 OMS 1240 Power Consumption................................................ 47
5.2 OMS 1260 Power Consumption................................................ 47
Chapter 6: Synchronisation .........................................................49
6.1 Timing Sources ......................................................................... 49
6.2 Synchronisation Modes ............................................................ 49
6.2.1 Freerun ............................................................................................... 49
6.2.2 SETG Timing ...................................................................................... 49
6.2.3 Holdover ............................................................................................. 49
6.3 Timing Marker Operation .......................................................... 50
6.3.1 Destination ID ..................................................................................... 50
6.4 Revertive/Non-revertive Operation .......................................... 50
6.5 Wait to Restore Period .............................................................. 50
6.6 Priority Table Options ............................................................... 50
6.7 Ext/Tributary Clock Selection................................................... 52
6.7.1 OMS1240 Tributary Selection ............................................................ 52
6.7.2 OMS1260 Tributary Selection ............................................................ 52
6.8 SDH Timing Sources ................................................................. 52
6.9 PDH Timing Sources ................................................................. 52
6.10 External Timing Input................................................................ 52
6.10.1 External Timing Quality levels ............................................................ 53
6.10.2 External Input SSMB position............................................................. 53
6.11 External Timing Output............................................................. 53
6.11.1 External Output SSMB position.......................................................... 54
6.11.2 External Output off State .................................................................... 54
6.12 Default SSMB............................................................................. 55

Marconi OMS 1200
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6.13 SSMB Code to Quality Level Assignment ............................... 55
6.14 SASE Mode ................................................................................ 55
6.14.1 SASE Mode disabled ......................................................................... 57
6.14.2 SASE Mode ........................................................................................ 57
6.14.3 Enhanced SASE Mode....................................................................... 58
6.14.4 Enhanced SASE Mode on External 1/2 ............................................. 58
6.15 2Mbit/s De-Synchroniser Bandwidth ....................................... 59
6.16 SDH Port SSMB Override.......................................................... 59
6.17 Card Configuration.................................................................... 60
6.17.1 Core Card Configuration .................................................................... 60
6.17.2 Controller/Comms Configuration ........................................................ 60
6.17.3 PDH Tributary Card............................................................................ 60
6.17.4 Synchronisation Configuration on Reset............................................ 60
Chapter 7: Protection Schemes ...................................................61
7.1 Introduction to Protection ........................................................ 61
7.2 General Protection Information and Architecture Rules........ 61
7.2.1 OMS 1240 Protection Rules............................................................... 61
7.2.2 OMS 1260 Protection Rules............................................................... 63
7.3 Intra/Inter Card MSP and SNCP Protection ............................. 70
7.4 SDH Trail Linear Multiplex Section Protection (MSP) ............ 71
7.4.1 OMS 1200 STM1/4 Core Card ........................................................... 73
7.4.2 OMS 1200 STM4/16 Core Card ......................................................... 74
7.4.3 K1/K2 Protocols.................................................................................. 75
7.4.4 Modes of Operation............................................................................ 76
7.4.5 Protection Switching Criteria .............................................................. 78
7.4.6 MSP Alarms........................................................................................ 81
7.4.7 Operator Entered Commands ............................................................ 81
7.4.8 Forced Switch to Worker .................................................................... 82
7.4.9 Forced Switch to Protection ............................................................... 82

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7.4.10 Clear ................................................................................................... 83
7.4.11 Remote Multiplexer Requests ............................................................ 83
7.4.12 Wait to Restore................................................................................... 84
7.4.13 Exercise.............................................................................................. 84
7.4.14 Reverse Request - ITU-T/ETSI Standard Protocols ONLY ............... 84
7.4.15 Do Not Revert..................................................................................... 84
7.4.16 No Request......................................................................................... 84
7.4.17 Local WTR and Do Not Revert States ............................................... 84
7.4.18 Protection Switching Control .............................................................. 85
7.4.19 Operator Commands for MSP............................................................ 87
7.4.20 Multiplexer Controller Restoration...................................................... 88
7.4.21 Protection Switch Time and K1, K2 Protocol Timing.......................... 88
7.5 VC-Trail SNCP............................................................................ 89
7.5.1 Introduction to SNCP.......................................................................... 89
7.5.2 Modes of Operation for SNCP............................................................ 90
7.5.3 Protection Switching Criteria for SNCP .............................................. 91
7.5.4 Protection Switching Control for SNCP.............................................. 97
7.5.5 Protection Switching Time.................................................................. 99
7.6 1+1 Tandem VC-Trail SNC Protection (TSNCP) .................... 100
7.6.1 Introduction to TSNCP ..................................................................... 100
7.6.2 Modes of Operation for TSNCP ....................................................... 100
7.6.3 Protection Switching Criteria for TSNCP.......................................... 101
7.6.4 APS Protocol Failure - Fault Types .................................................. 104
7.6.5 Protection State Reports .................................................................. 105
7.7 Traffic Core Card Protection .................................................. 106
7.7.1 Introduction to Traffic Core Card Protection..................................... 106
7.7.2 Modes of Operation.......................................................................... 108
7.7.3 Protection Switching Criteria ............................................................ 110
7.7.4 Further Protection Switching Criteria................................................ 112
7.7.5 Operator Entered Commands .......................................................... 116

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7.7.6 Protection Switching Control ............................................................ 117
7.8 Tributary Card Protection Schemes ...................................... 118
7.8.1 General............................................................................................. 118
7.8.2 Operator Entered Switching Control Commands ............................. 120
7.8.3 2Mbit/s 1:1 Core Tributary Protection (OMS 1240 only) .................. 120
7.8.4 PDH 34/45M/140M and SDH STM-1 Tributary Card Protection...... 121
7.9 PDH Port Protection ................................................................ 122
7.9.1 Modes of Operation.......................................................................... 122
7.9.2 Protection Switching Criteria ............................................................ 123
7.9.3 Protection Switching Control ............................................................ 126
7.9.4 Protection Switching Time................................................................ 127
7.9.5 PDH Port Protection Architecture..................................................... 127
7.10 MULTIPLEX SECTION SHARED PROTECTION (MS–
SPRING) ................................................................................... 127
7.10.1 Introduction....................................................................................... 127
7.11 Protection Switching Control ................................................. 128
7.11.1 External Controls.............................................................................. 128
7.11.2 Local Autonomous Controls (SF/SD Flags) ..................................... 129
7.11.3 Wait to Restore................................................................................. 130
7.11.4 Remotely Signalled Controls ............................................................ 130
7.11.5 Bi–directional APS Protocol ............................................................. 130
7.11.6 Multi Ring Switch.............................................................................. 131
7.11.7 Path of TCM Trail Trace used for Squelch of Mis–Connected
Traffic................................................................................................ 131
7.11.8 Signal Squelching Rules .................................................................. 131
7.12 Network Level Protection Switching Examples .................... 132
7.12.1 Ring Switch....................................................................................... 133
7.12.2 Multi-Ring Switch.............................................................................. 135
7.12.3 Multi-Ring Switch – Misconnected Traffic ........................................ 136

Marconi OMS 1200
Technical Product Description
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List of Figures
Figure 2-1: Basic OMS 1240 Subrack Structure ......................................................................... 20
Figure 2-2: OMS1240 with Battery Box....................................................................................... 21
Figure 2-3: Basic OMS 1240 Subrack......................................................................................... 21
Figure 2-4: Basic OMS 1260 Subrack Structure ......................................................................... 22
Figure 2-5: Example of a Basic OMS 1260 Subrack................................................................... 23
Figure 2-6: Vertically Extended 63x2Mbit/s LTU......................................................................... 29
Figure 2-7: OMS 1260 (with STM-1/4 Core) Tributary Groups Showing Bandwidth
Available.......................................................................................................................31
Figure 2-8: OMS 1260 (with STM-4/16 Core) Tributary Groups Showing Bandwidth
Available.......................................................................................................................32
Figure 3-1: Engineers Order Wire ............................................................................................... 37
Figure 3-2: Off-Net Customer Network Configuration ................................................................. 38
Figure 3-3: Example of Remote Management over OLO Network ............................................. 39
Figure 3-4: IP Management of Third Party Co-Located Equipment............................................ 40
Figure 4-1: Network Configurations............................................................................................. 43
Figure 4-2: Ring Applications ...................................................................................................... 44
Figure 4-3: Broadcast .................................................................................................................. 44
Figure 4-4: Ethernet Private Line ................................................................................................ 45
Figure 6-1: SASE Mode Disabled ............................................................................................... 57
Figure 6-2: SASE Mode............................................................................................................... 57
Figure 6-3: Enhanced SASE Mode ............................................................................................. 58
Figure 6-4: Enhanced SASE Mode on External 1/2.................................................................... 59
Figure 7-1: 4/16-Core Ring (MS-SPRING Protection) ................................................................ 64
Figure 7-2: 4/16-Core Ring (MSP Line Protection) ..................................................................... 65
Figure 7-3: 1/4 Core Ring (MSP line protection .......................................................................... 66
Figure 7-4: Intra Card Protection................................................................................................. 70
Figure 7-5: Inter Card Protection................................................................................................. 70
Figure 7-6: 1:1 STM-n Link Protection ........................................................................................ 72

Marconi OMS 1200
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Figure 7-7: MSP Protection with STM-1/4 Core Card ................................................................. 74
Figure 7-8: MSP Protection with STM-4/16 Core Card ............................................................... 75
Figure 7-9: STM –1/4 Core Card Equipping Options ................................................................ 108
Figure 7-10: STM-4/16 Core Card Equipping Options .............................................................. 109
Figure 7-11: SDM Architecture – Example Connections with the OMS 1240........................... 113
Figure 7-12: 2-Fibre MS-SPRING - Ring Protection Switch Concept ....................................... 134
Figure 7-13: 2-Fibre MS-SPRING - MultiRing Protection Switch Concept ......................................... 135
Figure 7-14: 2-Fibre MS-SPRING – Misconnected Traffic Concept .................................................. 136