[Asterisk-Users] Sangoma A200 preventing Zap channels from disconnecting immediately after PSTN line hangs up (getting empty voicemails)

[Eric "ManxPower" Wieling]

John Novack wrote:
> 
> 
> Mike Garey wrote:
> 
>> well, the problem isn't that the card doesn't detect a disconnect,
>> it's that it doesn't detect it immediately (or at least within a short 
>> period).
> Odds are that is the telco, and not the Sangoma or Digium card. That is 
> quite normal for a 10-30 second delay. Not all telco CO's send an 
> immediate pulse when the caller hangs up.
> 
> Is there no way to detect 5-6 seconds of silence by Asterisk?

This is from /path/src/asterisk/configs/voicemail.conf.sample.  Amazing 
how much good stuff is in that directory.  Especially handy to read 
after a significant upgrade (i.e. 1.0.x to 1.2.x)

; How many seconds of silence before we end the recording
maxsilence=10
; Silence threshold (what we consider silence, the lower, the more 
sensitive)
silencethreshold=128


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