When exactly is it g711? When the call is answered by Unity? Perhaps Unity is only accepting g711 calls, because the prompts are g711?
If you can get detailed CM traces and 'debug mgcp pack' you can see what codecs are being send down each leg, and it will shed more light on this. Something in the path doesn't support g729, it sounds like. If everything is MGCP, you have no dial-peers to worry about there. In CM, IP phones will support g729 in the g711 region, so my hunch is that Unity isn't configured for g.729 calls, in which case you'd need a transcoder at CM or Unity installed to support g729.
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The short answer is that you don't.... That isn't entirely true while at
the same time it kind of is, but for the most part you don't configure
the softkeys. You enable or disable them via TCL. Here is the long
answer. Be sure to read the whole thing or e...
Topology: IP Phone > Switches > Microsoft NPS setup to forward 802.1x
proxy to > ISE 2.1 patch 3 Authentication: EAP-TLS using Cisco MIC SANs
Phone Models 802.1X support? 802.1x flavor Addtl Comment EAP-MD5 EAP-TLS
Cisco 3905 Y Y N Cisco 6911 Y Y N Cisco ...