[asterisk-users] Problem with Cisco Phones

Jordan Cook - Gyron Networks jordan.cook at gyron.net
Tue Jan 20 10:41:00 CST 2015

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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