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| Boards applicable on Metro1000 | ||
| List of Cross-connect and system control board | ||
| Board | Description | Valid Slot |
| SCB | System control board | SCB |
| List of SDH boards | ||
| Board | Description | Valid Slot |
| OI16D | 2xSTM-16 optical interface board | The OI16D is integrated with the SCB |
| OI4 | 1xSTM-4 optical interface board | IU1, IU2, and IU3 |
| OI4D | 2xSTM-4 optical interface board | The OI4D is integrated with the SCB |
| IU1, IU2, and IU3 | ||
| OI2S | 1xSTM-1 optical interface board | IU1, IU2, and IU3 |
| OI2D | 2xSTM-1 optical interface board | The OI12D is integrated with the SCB |
| IU1, IU2, and IU3 | ||
| SL1Q | 4xSTM-1 optical interface board | IU4 |
| SL1O | 8xSTM-1 optical interface board | IU4 |
| SB2L | 1xSTM-1 single-fiber bidirectional optical interface board | IU1, IU2, and IU3 |
| SB2R | 1xSTM-1 single-fiber bidirectional optical interface board | IU1, IU2, and IU3 |
| SB2D | 2xSTM-1 single-fiber bidirectional optical interface board | IU1, IU2, and IU3 |
| SLE | 1xSTM-1 electrical interface board | IU1, IU2, and IU3 |
| SDE | 2xSTM-1 electrical interface board | IU1, IU2, and IU3 |
| List of PDH boards | ||
| Board | Description | Valid Slot |
| SP1S | 4xE1 electrical interface board | IU1, IU2, and IU3 |
| SP1D | 8xE1 electrical interface board | IU1, IU2, and IU3 |
| SP2D | 16xE1 electrical interface board | IU1, IU2, and IU3. |
| The SP2D is integrated with the SCB. | ||
| PD2S | 16xE1 electrical interface board | IU4 |
| PD2D | 32xE1 electrical interface board | IU4 |
| PD2T | 48xE1 electrical interface board | IU4 |
| SM1S | 4xE1/T1 electrical interface board | IU1, IU2, and IU3 |
| SM1D | 8xE1/T1 electrical interface board | IU1, IU2, and IU3 |
| PM2S | 16xE1/T1 electrical interface board | IU4 |
| PM2D | 32xE1/T1 electrical interface board | IU4 |
| PM2T | 48xE1/T1 electrical interface board | IU4 |
| PE3S | 1xE3 electrical interface board | IU1, IU2, and IU3 |
| PE3D | 2xE3 electrical interface board | IU1, IU2, and IU3 |
| PE3T | 3xE3 electrical interface board | IU1, IU2, and IU3 |
| PT3S | 1xT3 electrical interface board | IU1, IU2, and IU3 |
| PT3D | 2xT3 electrical interface board | IU1, IU2, and IU3 |
| PT3T | 3xT3 electrical interface board | IU1, IU2, and IU3 |
| List of data boards | ||
| Board | Description | Valid Slot |
| ET1 | 8-port Ethernet service interface board | IU4 |
| ET1O | 8-port Ethernet service electrical interface board | IU4 |
| ET1D | 2-port Ethernet service electrical interface board | IU1, IU2, and IU3 |
| EF1 | 6-port Ethernet service interface board | IU4 |
| ELT2 | 2-port 100M Ethernet optical interface board | IU1, IU2, and IU3 |
| AIUD | 2-port ATM interface board | IU4 |
| AIUQ | 4-port ATM interface board | IU4 |
| SHLQ | Single-pair high-speed digital subscriber line board | IU1, IU2, and IU3 |
| EFS | 4-port Ethernet service switching board | IU1, IU2, and IU3 |
| EFT | 4-port Ethernet service interface board | IU1, IU2, and IU3 |
| EGS | 1-port 1000M Ethernet optical interface board | IU1, IU2, and IU3 |
| EFSC | 12-port Ethernet service switching board | C |
| EGT | 1-port 1000M Ethernet transparent transmission board | IU1, IU2, and IU3 |
| N64 | Nx64 kbit/s interface board | IU1, IU2, and IU3 |
| N64Q | 4xNx64 kbit/s interface board | IU1, IU2, and IU3 |
| FP2D | 16xFramed E1 electrical interface board | IU1, IU2, and IU3 |
| TDA | Multiple-channel audio and data access board | IU4 |
| Board substitution | |||
| Substitute Board | To-Be-Substituted Board | Substitute Board | To-Be-Substituted Board |
| SS44OI4 | SS42OI4 | SS49OI2D | SS48OI2D |
| SS49OI2S | SS48OI2S | SS48SP2D | SS42SP2D |
| SS48PD2S | SS42PD2S,SS44PD2S | SS48PD2D | SS42PD2D,SS44PD2D |
| SS48PD2T | SS42PD2T,SS44PD2T | SS49EFS | SS42EFS |
| SS45EGS | SS42EGS | SS45EGT | SS42EGT |
