Digium, Inc. Page 45
Chapter 3: Configuration
Timing:
This determines how timing is handled by the card.
0 - Card provides its own timing
1 - Receives timing from remote end
2 - Receives secondary backup timing from remote end
3 - Receives tertiary backup timing from remote end
4 - Receives quaternary backup timing from remote end
Only one span can be defined to take timing, and it defines timing for
the rest of the card’s spans.
Line Build Out:
For most setups the line build out is 0.
0: 0 db (CSU) / 0-133 feet (DSX-1)
1: 133-266 feet (DSX-1)
2: 266-399 feet (DSX-1)
3: 399-533 feet (DSX-1)
4: 533-655 feet (DSX-1)
5: -7.5db (CSU)
6: -15db (CSU)
7: -22.5db (CSU)
Framing:
T1 utilizes framing set for D4 (SF) or ESF. E1 utilizes CAS or CCS.
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