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Hello All, We recently changed our asterisk system to begin using
G.729a as the primary codec. We have a Cisco 1700-series router which
connects to the PSTN via FXO ports, along with Cisco 7940 SIP phones.
Everything is working great, except… When an inbound caller calls
into our system, they hear an IVR. When the caller dials an ext (SIP
phone), the ringing progress tone is choppy/distorted… However, the
voice call itself sounds fine. Asterisk, the Cisco phone, and the call
gateway are all configured to use rfc2833. From my research, asterisk
generates progress tones out-of-band (I think) unless turned on. We
don’t have any problems with the progress tones when G.711u is
used. Any help/ideas would be greatly appreciated. Todd |
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