Tag : CNG
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That would be a CNG frame (AST_FRAME_CNG). While a frame exists to convey CNG to capable channel drivers, CNG itself is not implemented or handled in chan_sip (or most of Asterisk).Theres a lot of intervening points between sip_write and whatever genera..
Using a T.38 termination, you can receive faxes using g729, but not while using alaw. If thats the case, your Asterisk installation will need to detect the Fax Tones so as to make the decision the incoming call is a fax and then switch to the fax extensi..
Is echo cancellation automatically disabled upon recognition of CNG tone? Does faxdetect=incoming sends a call to fax extension when CNG tone is detected? Whats the purpose of faxdetect=ou..