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| Specifications | ||||
| Switching Capacity | TDM: 60 Gbit/s (higher-order), 20 Gbit/s (lower order) | |||
| Service Slots | 12 slots for processing boards and 8 slots for interface boards | |||
| Supported Interfaces | MSTP interfaces | STM-16/4/1, E1/E3/E4/T1/T3, FE/GE, DDN, IMA/ATM, FEC/EFEC, SAN, Video | ||
| WDM interfaces | 40-channel DWDM interfaces, compliant with ITU-T G.694.1 | |||
| 8-channel CWDM interfaces, compliant with ITU-T G.694.2 | ||||
| Power Supply | DC: -48V DC or -60V DC, AC: 220V/110V AC | |||
| Maximum Number of Services Supported by a Single Subrack | Service Interface | Max | Service Interface | Max |
| STM-16 | 9 | STM-4 | 36 | |
| STM-1 | 92 | STM-1 (electrical) | 38 | |
| E4 | 16 | E3/T3 | 57 | |
| E1 | 252 | T1 | 252 | |
| FE | 88 | GE | 28 | |
| DDN(N×64K) | 32 | Framed E1 | 32 | |
| STM-1 ATM | 28 | STM-4 ATM | 7 | |
| ESCON | 20 | FICON/FC100 | 9 | |
| FC200 | 4 | DVB-ASI | 20 | |
| Clock Synchronization | Line clock source | |||
| Tributary clock source | ||||
| Two external clock inputs/outputs (2 MHz or 2 Mbit/s) | ||||
| Auxiliary Interface | Orderwire interface, NNI connection interfaces | |||
| Management serial interface, serial interfaces, 64 kbit/s codirectional data channel, 10M/100M NM interface, commissioning interface | ||||
| Alarm interface, Cabinet alarm indicator interface | ||||
| Mechanical Specifications | ||||
| Dimensions(mm) | 472 (H) x 447 (W) x 295 (D) | |||
| Weight(kg) | 25 | |||
| Boards applicable on OSN3500 | |||
| List of WDM board | |||
| TN11CMR2 | 2-channel optical add/drop multiplexing board | N1MR2B | 2-channel optical add/drop multiplexing board |
| TN11CMR4 | 4-channel optical add/drop multiplexing board | N1MR2C | 2-channel optical add/drop multiplexing board |
| TN11MR2 | 2-channel optical add/drop multiplexing board | N1LWX | Arbitrary bit rate wavelength conversion board |
| TN11MR4 | 4-channel optical add/drop multiplexing board | TN11OBU1, TN12OBU1 | Optical booster amplifier board |
| N1MR2A | 2-channel optical add/drop multiplexing board | N1FIB | Filter isolating board |
| List of Microwave Boards | |||
| N1IFSD1 | Dual-port IF board | N1RPWR | 6-channel ODU power board |
| List of Optical Amplifier Boards and Dispersion Compensation Boards | |||
| N1BPA, N2BPA | Optical booster and pre-amplifier board | N1RPC01 | Forward Raman driving board (external) |
| N1BA2 | Optical booster amplifier board | N1RPC02 | Backward Raman driving board (external) |
| N1COA, 61COA, 62COA | Case-shaped optical amplifier | – | – |
| List of power boards | |||
| UPM | Uninterruptible power module | Q1PIU and Q1PIUA | Power interface board |
| Board substitution | ||||
| Substitute Board | To-Be-Substituted Board | Substitute Board | To-Be-Substituted Board | |
| Q5CXLLN | Q2CXL1/Q2CXL4/Q2CXL16 | N1SL1A | N1SL1 | |
| N3SLQ41 | N1SLQ1/N2SLQ1 | N1SLQ1 | N1SLQ1A | |
| N1SL4A | N1SL4 | N1SLD4 | N1SLD4A | |
| N3SLQ41 | N1SLQ4/N2SLQ4 | N3SL1 | N1SL16 | |
| N3SL16 | N1SL16A | N3SL16 | N1SL16 | |
| R1PD1A | R2PD1A | R1PD1 | R2PD1B | |
| N2PL | N1PL3 | N2PL3 | N1PL3A | |
| N2PD | N1PD3 | N2SPQ4 | N1SPQ4 | |
| N2EFT | N1EFT8 | N2EFT8 | N1EFT8A | |
| N2EGT | N1EGT2 | N2EFS | N1EFS0 | |
| N4EFS | N2EFS0/ N1EFS0 | N5EFS0 | N4EFS0/N2EFS0/N1EFS0 | |
| N2EFS | N1EFS4 | N3EFS | N2EFS4 and N1EFS4 | |
| N3EGS | N2EGS2 | N4EGS | N3EGS4 |
| Restrictions for board substitution | ||
| Boards that support board version replacement functions | Boards that cannot Be substituted | Condition |
| N3SL16 | N2SL16 | AU-3 services are configured for the N2SL16 |
| N3SL16A | N2SL16A | AU-3 services are configured for the N2SL16A. |
| N3SLO1 | N2SLO1 | The TCM function and AU-3 services are configured for the N2SLO1. |
| N1PQ1A | N2PQ1A | The tributary re-timing function is required by N2PQ1A. |
| N1PQ1B | N2PQ1B | The tributary re-timing function is required by N2PQ1B. |
| N1PQ1A | N2PQ1A | The tributary re-timing function is required by N2PQ1A. |
| N2BPA | N1BPA | The ALS function is enabled for the N2BPA. |
