Does anyone have a good example how to use a 2811 router as a media termination / transcoding resource as a GW to a h323 VoIP Provider. Faststart is enabled with alaw.
What we get signalized from the carrier is either g711a+g711u, g711a or g711u.
First we had a voice class codec list on the
carrier site with g711alaw and g711ulaw and
a fixed alaw codec on the internal site, but then calls failed which were signalized as a
combi of alaw and ulaw.
We thought that using codec transparent and then using the communications manager to decide
if transcoding resources are needed would solve
the problem, but the users then complained that
forwarded calls had one way audio and that it
added issues on the fax transmission via the atas.
Also I did not find anything to define in
call manager that a region has to use
g711alaw, it seems that you can define g711ulaw.
How can I define the preference of the
specific g711 type on the region or the
sccp phone itself?
So again in short setup:
Carrier (h323) <-> 2811 <-> (h323) CUCM 7.0 <-> cisco phones
How shall the config of the codecs,
dial peers, mtp/transcoding/gw and
phone codec / regions look like?
Any help and commments is highly appreciated!