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hello, using Asterisk, is there any clever way to
provide answer supervision based upon the received audio only from the FXO
interface (from a public PSTN switch that does not have battery reversal, or
CPC).
I would like to use something like:
[toCALLOUT
;script to call a particular number regardless, but we want to terminate if call is not answered ;we do NOT have Battery/Polarity reversal & we
do NOT have CPC from the FXO port.
;Zap/3 is a FXO port connected to PSTN
exten => s,1,Answer
exten => s,n,Playback(beep) exten => s,n,Playback(beep) exten => s,n,Playback(pls-wait-connect-call) ; nice of us don't you think? exten => s,n,ChanIsAvail(Zap/3) exten => s,n,Cut(theChannel=AVAILCHAN,,1) exten => s,n,SetAccount(007) exten => s,n,Dial(${theChannel}/w1234567) <------------------ we need to fork a process here to monitor timeout exten => s,n,Hangup * if 15-30 seconds go by and the call is not
answered, how can we determine the call progress ? Note this is not a US network
we are using. Can we utilise answer supervision based completely on received
audio (like voice speech detection) ?
-samudra
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