Hi,
I have a 4 port FXO openvox card.
My clients connect to the call center and depending on their username/password I connect them to a remote phone number via DAHDI, but when I enable callprogress=yes the channel does not understand that the call has been answered, please help me. I understand that this has something to do with the tone profile in my country Iran. Please let me know what to do. Ali
callprogress: Asterisk can attempt to monitor the state of the call to listen for a ringing tone, busy tone, congestion tone, and sounds indicating that the line has been answered. It appears that this feature is independent of the busydetect feature; it seems that both can run in parallel, and both will independently attempt to recognize a busy tone. The callprogress feature is highly experimental and can easily detect false answers, so don't count on it being very accurate. Also, it is currently configured only for standard U.S. phone tones. Default: no.
callprogress = yes
