OMS 3250

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OMS3250Product DescriptionTABLE OF CONTENTSList of Abbreviations .............................................................................................................. 71 INTRODUCTION................................................................................................... 101.1 SDH Hierarchy....................................................................................................... 111.2 OTN Hierarchy....................................................................................................... 122 CONFIGURATION ................................................................................................ 133 TRIBUTARY INTERFACES................................................................................... 173.1 Interfaces and protection........................................................................................ 173.2 Synchronisation Interfaces..................................................................................... 193.3 Electrical Interfaces Characteristics ....................................................................... 193.4 Optical Interfaces Characteristics........................................................................... 193.4.1 SDH Multirate card................................................................................................. 223.4.2 Gigabit Ethernet card ............................................................................................. 233.4.3 Multi-Protocol Data card......................................................................................... 243.4.4 Aggregation Data card ........................................................................................... 253.4.4.1 L2 transport ....................................................................................................... 253.4.4.2 L2 switching....................................................................................................... 263.4.5 OTM cards ............................................................................................................. 274 MAPPING & MULTIPLEXING FUNCTIONS.......................................................... 295 SDH SECTION AND PATH OVERHEAD BYTES PROCESSING ......................... 305.1 SOH Bytes Description .......................................................................................... 305.1.1 Regeneration Section Overhead (RSOH)............................................................... 305.1.2 Multiplex Section Overhead (MSOH) ..................................................................... 315.2 POH Bytes Description .......................................................................................... 315.2.1 VC-4 / VC-4Xc / VC-4-Xv POH .............................................................................. 315.2.2 Connection Supervision Functions......................................................................... 325.2.3 Tandem Connection Monitoring ............................................................................. 326 OTN OVERHEAD BYTE PROCESSING ............................................................... 337 CONNECTION SUBSYSTEM................................................................................ 347.1 LO-VC Switching.................................................................................................... 358 UPGRADE TO OMS3260...................................................................................... 399 NETWORK APPLICATIONS AND PROTECTIONS .............................................. 409.1 MSP protection ...................................................................................................... 409.2 MS-SPRing Protection ........................................................................................... 409.3 Ring Interworking Protection .................................................................................. 429.4 OTN protection....................................................................................................... 429.5 Sub-network connection protection ........................................................................ 439.6 OS Restoration ...................................................................................................... 449.7 Fast Restoration..................................................................................................... 4410 AUTOMATIC SWITCHING TRANSPORT NETWORK with OMS3250 .................. 4511 EQUIPMENT ARCHITECTURE ............................................................................ 4611.1 Block Diagram ....................................................................................................... 4611.1.1 SDH Tributary Units ............................................................................................... 4711.1.2 OTN Tributary Units ............................................................................................... 4811.1.3 HO Switch Unit....................................................................................................... 4811.1.4 LO-VC Switch Unit ................................................................................................. 4911.1.5 Communication/Controller Unit .............................................................................. 4911.1.6 Auxiliary Unit.......................................................................................................... 49Issue 1 Copyright – Refer to Page 2 Page 3 of 74
Product DescriptionOMS325011.2 Internal Distribution Of Signals ...............................................................................4911.2.1 Traffic signals .........................................................................................................5011.2.2 Timing signals ........................................................................................................5111.2.3 Synchronisation Status Messaging.........................................................................5111.2.4 Control signals........................................................................................................5111.2.5 Overhead................................................................................................................5211.2.6 Power supply..........................................................................................................5411.3 Card Slot Allocation ................................................................................................5411.4 Mechanical Structure..............................................................................................5511.5 Connectors.............................................................................................................5711.5.1 Optical Traffic Connectors ......................................................................................5711.5.2 Electrical Traffic Connectors...................................................................................5711.5.3 Other Connectors ...................................................................................................5811.6 Cables ....................................................................................................................5812 ALARMS ................................................................................................................6012.1 Unit Alarm Displays ................................................................................................6012.2 Rack Alarm Displays...............................................................................................6012.3 Alarm Processing ...................................................................................................6113 PERFORMANCE MONITORING AND MANAGEMENT.........................................6313.1 SDH Performance monitoring.................................................................................6313.2 OTN performance monitoring .................................................................................6314 SERVICES.............................................................................................................6514.1 Engineering Order Wire (EOW) ..............................................................................6514.2 Data channels ........................................................................................................6515 GENERAL OPERATING FEATURES ....................................................................6715.1 Equipment Use.......................................................................................................6715.2 Plug-in Unit Handling..............................................................................................6715.3 Fault Management (Self Diagnostic).......................................................................6715.4 Recovery From Faults ............................................................................................6815.5 Equipment Robustness...........................................................................................6815.6 Inventory.................................................................................................................6816 EQUIPMENT MANAGEMENT ...............................................................................6917 TECHNICAL SPECIFICATIONS ............................................................................7117.1 Electrical Environment............................................................................................7117.2 Climatic and Mechanical Environment ....................................................................7117.2.1 General ..................................................................................................................7117.2.2 Storage Endurance.................................................................................................7117.2.3 Transport Endurance..............................................................................................7117.2.4 Environmental Endurance For Indoor Operation.....................................................7117.3 System Performance ..............................................................................................7217.3.1 Error Performance..................................................................................................7217.3.2 Transmission Delay ................................................................................................7217.3.3 Jitter Characteristics ...............................................................................................7217.4 Power Requirements (according to ETSI ETS 300-132) .........................................7217.5 Synchronisation......................................................................................................7217.6 Power Consumption ...............................................................................................7317.7 Safety .....................................................................................................................7317.7.1 General ..................................................................................................................7317.7.2 Optical safety requirements ....................................................................................74Page 4 of 74 Copyright – Refer to Page 2 Issue 1
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OMS 3250

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