ADTRAN 1200103L2, Руководство пользователя

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Appendix C. Signaling States
30
FXO+ Dual Voice Option Module User Manual 61200.103L2-1
Table C-B
FXO+ Ground Start Mode
FXO+ FXO+
2W OUTPUT RX A RX B TXA TX B 2W INPUT
Outgoing call from 2W port
Loop open, no ring ground 0 1 1 1 No tip ground, no ringing (idle)
Loop open, no ring ground 0 1 0 1
Loop closed, no ring ground 1 1 0 1
Loop closed, no ring ground 1 1 0 0
Incoming call to 2W port
Loop open, no ring ground 0 1 1 1 No tip ground, no ringing (idle)
Loop open, ring ground 0 0 1 1 No tip ground, no ringing
Loop open, ring ground 0 0 0 1 Tip ground, no ringing
Loop closed, no ring ground 1 1 0 1 Tip ground, no ringing
Tip ground, no ringing
Tip ground, no ringing
Tip ground, no ringing
The A and B signal bit states on the DS-1 signal are as
follows:
0 = logic 0 is the DS-1 stream
1 = logic 1 is the DS-1 stream
X = value is not significant
Loop Open = phone on-hook
Loop Closed = phone off-hook
See Tables C-B and C-C for descriptions of FXO mode
for signaling states.