| Tele Protection And Telecommunication System | ||
| Optical line terminal (OLT/STM-1) | | |
| - Functions | | ITU – T Rec. G. 783 ITU-T Rec. G .703 ITU-T Rec. G.707 ITU-T Rec G.783,G.811 G.812,G.813 ITU-T Rec G783 ITU-T Rec G958 |
| - PDH to SDH electrical Interface | ||
| - MUX structure | ||
| - Timing , Synchronization | ||
| - Jitter and wander for SDH Mux. | ||
| - Jitter and wander for SDH Line. | ||
| - Craft interface | VDC VDC | ITU-T Rec G.773 ITU-T Rec G.985 |
| - Optical Safety | ||
| - Min. receive power @ BER 10 -10 | ||
| - - Power supply rated § Range | 48 40 - 60 | |
| - Primary Multiplexer | | |
| - Comply with ITU-T Rec. G. 737 | | |
| - Add / drop. | kbps | 64 or multiple of 2.4 kbps. 2048 ± 50 ppm ITU – T Rec G.711 ITU-TRec. G.711 ITU-T Rec. G.714 |
| - - Bit rate | kbps | |
| - PCM Requirements | | |
| - Frame Structure | ||
| - Encoding Law | ||
| - Performance at Voice frequencies | ||
| - Alarms - Power failure | | |
| - Loss of incoming signals 2048 kbps | | |
| - Loss of frame alignment | | |
| - Alarm indication from remote Mux | | |
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