Unity 3.1.5 not answering g729 calls

[j.house]

I have CM 3.3 and Unity 3.1.5 (both centralized). IP phone to IP phone calls between regions are working properly and are using g729. Calls to Unity from a g729 region don't work. The g729 codec is installed and enabled. It appears that Unity isn't transcoding for g729 calls.

[lindborg]

Somewhere along the line this was changed to set automatically but you might check to be sure the G729a support is enabled in the registry. Check this key:

HKEY_LOCAL_MACHINE\SOFTWARE\Active Voice\AvSkinny "G729 Enabled"

it's a DWORD and should be set to 1 for Unity to accept g729a calls.

[j.house]

Yep, this entry is already there, and Unity has been restarted since the entry was added.

Any other thoughts?

When a voicemail call is attempted the phone display shows that voicemail was called, but then disconnects.