Some customer usually request for service board, ignore the interface board, after purchased, found can not deploy services. to avoid this, we make a simple table to list all the interface board, with which board it should be working with, on OSN1500/2500/3500 system.
| PQ1 | PD1 in 1500II | PD1 in other sub-racks | PQM and PDM | PL3 | PD3 | SPQ4 | SEP | Remarks | |
| ssn1d75s | √ | √ | 32xE1/T1 Electrical Interface Outlet Board (75 ohm) | ||||||
| ssn1d12s | √ | √ | √ | 32xE1/T1 Electrical Interface Outlet Board (120 ohm) | |||||
| ssn1d12b | √ | √ | √ | 32xE1/T1Electrical Interface Switching Outlet Board (120 ohm, not support TPS) | |||||
| ssn1c34s | √ | 3xE3/T3 Electrical Interface Switching Outlet Board | |||||||
| ssn1c34b | √ | 3xE3/DS3 Electrical Interface Switching Outlet Board (not support TPS protection) | |||||||
| ssn1d34s | √ | √ | 6xE3/DS3 Electrical Interface Switching Outlet Board | ||||||
| ssn1mu04 | √ | 4x144M/155M Electrical Interface Switching Outlet Board | |||||||
| ssn1eu04 | √ | 4xSTM-1 Electrical Interface Outlet Board | |||||||
| ssn1eu08 | √ | 8xSTM-1 Electrical Interface Outlet Board | |||||||
| ssn1ou08 | √ | 8xSTM-1 Optical Interface Outlet Board | |||||||
| ssn2ou08 | √ | 8xSTM-1 Optical Interface Outlet Board | |||||||
| ssn1tsb8 | √ | √ | √ | √ | 8-channel electrical Interface Protection Switching Board | ||||
| ssn1tsb4 | √ | √ | 4-channel electrical Interface Protection Switching Board | ||||||
| ssr1l75s | √ | 32xE1/T1 electrical interface outlet board (75 ohm), small board, for PD1 | |||||||
| ssr1l12s | √ | 32xE1/T1 electrical interface outlet board (120 ohm), small board, for PD1 |
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