Displaying 1 result from an estimated 1 matches for "callpogress".
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callprogress
2004 Aug 31
0
Streaming an audio file to a Zap channel before answer
...o the calling party until the user presses a
'#' key to confirm answer. This is essential because in an
analogue-to-analogue call the only confirmation of answer is tones. I
don't want to use tone detection as it is too unrelaible and the UK
progress tones don't work well with callpogress detection anyway.
In my std-extension macro I include the Dial options r, to allow the
calling party to hear PSTN ringback until the channel is answered,
wither by the called party pressing # or the call going to voicemail.
exten => s,1,Dial(${ARG2},30,tTr) ; Ring the
in...