asterisk-dev，您好！
x100p drive how to implement detect Disconnect ?
x100p drive detect Tone-based Supervisory Disconnect?
how to implement ?
need to modify zaptel wcfxo.c ?
http://www.cisco.com/warp/public/788/signalling/fxo_disconnect.html#topic1
Understanding FXO Disconnect Problem
Disconnect Signaling ：
Ground-start Signaling Disconnect
Power Denial-based Supervisory Disconnect
Battery Reversal
Tone-based Supervisory Disconnect
dev2003
[EMAIL PROTECTED]
2004-11-09
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