Luar Roji
2010-Mar-29 17:32 UTC
[asterisk-users] No audio when calling via PSTN, before remote answers (with polarity reversal)
Hi! I want to get audio from the PSTN before the call is answered so I don't miss when the called phone is busy or if there is some error (like the phone is unavailable or is wrong, etc) and hear the ringing from my telco. I have polarity reversal in my telco for incoming and outgoing calls. If I set answeronpolarityswitch=yes then I get no audio until the call is answered. If I set it to "no" it works fine sometimes, but other times when the call gets answered, asterisk detects the polarity reversal as a hangup and hangs up the call. I need to have hanguponpolarityswitch set to yes for detecting hang ups in incoming calls. (it was a nightmare before this) Any ideas? I had this working in previous versions of asterisk but didn't find what was the change that caused this behaviour, and I need to use a recent version of asterisk for some changes in dtmf caller id detection that aren't in my distro yet (debian). Thanks in advance.