[asterisk-users] Problem with Cisco Phones

Jordan Cook - Gyron Networks
Tue, 20 Jan 2015 16:41:00 -0000

We were using G722 - I thought similarly and tried a call with alaw. Same
problem occurred, any other ideas?

> I'm willing to bet you are forcing the use of G729.  7940 and 7960
phones can
> only do a single G729 channel, and if you require G729 for the second leg
of a
> conference, it will fail.



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