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Stmu and set in bsc3i

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Binay Singh

STMU and SET can be equipped in BSC3i in two different ways for S12 upgrades: the default way uses four ETS2 units with two active and two standby SET interfaces each, while the alternative uses eight ETS2 units each with one active and one standby SET interface. One ETS2 unit forms a STMU functional unit providing redundancy for 2-4 SETs. The SETs are installed in GT4C-A cartridges with up to 32 total SETs supported in initial S12 deliveries.

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STMU and SET in BSC3i STMU and SET is included in BSC3i first deliveries and in S12 upgrade deliveries. Purpose: In S12, there are two ways to equip ETS2 plug-in units into GTIC cartridges: • The default way is to equip four ETS2 plug-in units to both GTIC cartridges (GTIC cartridges powered by different PDFU- Bs) and to use both STM-1/OC-3 interfaces (two active and two standby SETs per STM-1/OC-3 interface) of ETS2 plug-in units. • The alternative way is to equip eight ETS2 plug-in units to both GTIC cartridges (GTIC cartridges powered by different PDFU- Bs) and use only the first one of the STM-1/OC-3 interfaces (active SET + standby SET) of ETS2 plug-in units. The optical interface from the front panel of the ETS2 plug-in unit is cabled through the CPGO at the cabinet top. One STMU unit (that is, one ETS2 plug-in unit) has four SETs in use in the default alternative presented above and in the other alternative one STMU unit (that is, one ETS2 plug-in unit) has two SETs in use. In optical interface redundancy, only even STMU indexes are used; either four (by default) or eight (alternative) in both cartridges (GTIC 0 and GTIC 1). Redundancy: Transmission protection Type: Functional unit Plug-in units: ETS2 Exchange Terminal for 2 x STM-1/OC-3 Interfaces: GSW2KB Control interface from a signalling unit (through GSW2KB) STM-1/OC-3 (SDH/SONET) Synchronisation Optical interface panel SFP Single-Mode LC Optical Transceiver Modules, SFPS1L In S12, the new 2048 PCM bit group switch GSW2KB is a prerequisite for the use of SDH/SONET Exchange Terminal (SET). One ETS2 plug- in unit forms a STMU functional unit. Depending on configuration, each STMU consists of two or four SETs. One SET consists of 63 STM-1 (ETSI) / 84 OC-3 (ANSI) ETs. The SETs, both active and standby, are installed in the GT4C-A cartridges. The number of SET units with an optical interface
redundancy in S12 first deliveries is from 0 to 32 (16 active and 16 standby; in steps of one active and one standby at a time). All SETs have a unique index of their own. The GT4C-A cartridges can contain up to eight ETS2 plug-in units, each containing two SET functional units. Figure: STMU and SET in GT4C-A (GTIC 0 and 1) cartridges Table: STMU and SET in GT4C-A cartrige (GTIC 0 and GTIC 1; two active + two standby SETs in user per ETS2) Position Name Function Notes F01 SHIM4T/ ETS2 Shim plate / SDH/SONET Exchange Terminal 1) 2) F02 SHIM4T/ ETS2 Shim plate / SDH/SONET Exchange Terminal 1) 2) F03 SHIM4T/ ETS2 Shim plate / SDH/SONET Exchange Terminal 1) 2) F04 SHIM4T/ ETS2 Shim plate / SDH/SONET Exchange Terminal 1) 2) F05 SHIM4T Shim plate F06 SHIM4T Shim plate F07 SHIM4T Shim plate F08 SHIM4T Shim plate F09 SHIM4T Shim plate
Position Name Function Notes Notes 1) If no ETS2 is equipped, SHIM4T is left equipped in this slot. 2) Number of hotlinks: 2 x 2 Table: STMU and SET in GT4C-A cartrige (GTIC 0 and GTIC 1; one active + one standby SET in user per ETS2) Position Name Function Notes F01 SHIM4T/ ETS2 Shim plate / SDH/SONET Exchange Terminal 1) 2) F02 SHIM4T/ ETS2 Shim plate / SDH/SONET Exchange Terminal 1) 2) F03 SHIM4T/ ETS2 Shim plate / SDH/SONET Exchange Terminal 1) 2) F04 SHIM4T/ ETS2 Shim plate / SDH/SONET Exchange Terminal 1) 2) F05 SHIM4T/ ETS2 Shim plate / SDH/SONET Exchange Terminal 1) 2) F06 SHIM4T/ ETS3 Shim plate / SDH/SONET Exchange Terminal 1) 2) F07 SHIM4T/ ETS2 Shim plate / SDH/SONET Exchange Terminal 1) 2) F08 SHIM4T/ ETS2 Shim plate / SDH/SONET Exchange Terminal 1) 2) F09 SHIM4T Shim plate Notes 1) If no ETS2 is equipped, SHIM4T is left equipped in this slot. 2) Number of hotlinks: 2 x 1

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Stmu and set in bsc3i

  • 1. STMU and SET in BSC3i STMU and SET is included in BSC3i first deliveries and in S12 upgrade deliveries. Purpose: In S12, there are two ways to equip ETS2 plug-in units into GTIC cartridges: • The default way is to equip four ETS2 plug-in units to both GTIC cartridges (GTIC cartridges powered by different PDFU- Bs) and to use both STM-1/OC-3 interfaces (two active and two standby SETs per STM-1/OC-3 interface) of ETS2 plug-in units. • The alternative way is to equip eight ETS2 plug-in units to both GTIC cartridges (GTIC cartridges powered by different PDFU- Bs) and use only the first one of the STM-1/OC-3 interfaces (active SET + standby SET) of ETS2 plug-in units. The optical interface from the front panel of the ETS2 plug-in unit is cabled through the CPGO at the cabinet top. One STMU unit (that is, one ETS2 plug-in unit) has four SETs in use in the default alternative presented above and in the other alternative one STMU unit (that is, one ETS2 plug-in unit) has two SETs in use. In optical interface redundancy, only even STMU indexes are used; either four (by default) or eight (alternative) in both cartridges (GTIC 0 and GTIC 1). Redundancy: Transmission protection Type: Functional unit Plug-in units: ETS2 Exchange Terminal for 2 x STM-1/OC-3 Interfaces: GSW2KB Control interface from a signalling unit (through GSW2KB) STM-1/OC-3 (SDH/SONET) Synchronisation Optical interface panel SFP Single-Mode LC Optical Transceiver Modules, SFPS1L In S12, the new 2048 PCM bit group switch GSW2KB is a prerequisite for the use of SDH/SONET Exchange Terminal (SET). One ETS2 plug- in unit forms a STMU functional unit. Depending on configuration, each STMU consists of two or four SETs. One SET consists of 63 STM-1 (ETSI) / 84 OC-3 (ANSI) ETs. The SETs, both active and standby, are installed in the GT4C-A cartridges. The number of SET units with an optical interface
  • 2. redundancy in S12 first deliveries is from 0 to 32 (16 active and 16 standby; in steps of one active and one standby at a time). All SETs have a unique index of their own. The GT4C-A cartridges can contain up to eight ETS2 plug-in units, each containing two SET functional units. Figure: STMU and SET in GT4C-A (GTIC 0 and 1) cartridges Table: STMU and SET in GT4C-A cartrige (GTIC 0 and GTIC 1; two active + two standby SETs in user per ETS2) Position Name Function Notes F01 SHIM4T/ ETS2 Shim plate / SDH/SONET Exchange Terminal 1) 2) F02 SHIM4T/ ETS2 Shim plate / SDH/SONET Exchange Terminal 1) 2) F03 SHIM4T/ ETS2 Shim plate / SDH/SONET Exchange Terminal 1) 2) F04 SHIM4T/ ETS2 Shim plate / SDH/SONET Exchange Terminal 1) 2) F05 SHIM4T Shim plate F06 SHIM4T Shim plate F07 SHIM4T Shim plate F08 SHIM4T Shim plate F09 SHIM4T Shim plate
  • 3. Position Name Function Notes Notes 1) If no ETS2 is equipped, SHIM4T is left equipped in this slot. 2) Number of hotlinks: 2 x 2 Table: STMU and SET in GT4C-A cartrige (GTIC 0 and GTIC 1; one active + one standby SET in user per ETS2) Position Name Function Notes F01 SHIM4T/ ETS2 Shim plate / SDH/SONET Exchange Terminal 1) 2) F02 SHIM4T/ ETS2 Shim plate / SDH/SONET Exchange Terminal 1) 2) F03 SHIM4T/ ETS2 Shim plate / SDH/SONET Exchange Terminal 1) 2) F04 SHIM4T/ ETS2 Shim plate / SDH/SONET Exchange Terminal 1) 2) F05 SHIM4T/ ETS2 Shim plate / SDH/SONET Exchange Terminal 1) 2) F06 SHIM4T/ ETS3 Shim plate / SDH/SONET Exchange Terminal 1) 2) F07 SHIM4T/ ETS2 Shim plate / SDH/SONET Exchange Terminal 1) 2) F08 SHIM4T/ ETS2 Shim plate / SDH/SONET Exchange Terminal 1) 2) F09 SHIM4T Shim plate Notes 1) If no ETS2 is equipped, SHIM4T is left equipped in this slot. 2) Number of hotlinks: 2 x 1