Hello. we use UAC module for trunk registration at
kamailio.
We have successfull routing and calling through our trunks to
many providers and have just one problem with AT&T
endpoints. When callee at AT&T endpoint hook call (I see OK
from provider as response to our INVITE from AT&T endpoint)
and then kamailio sends CANCEL to endpoint, but then kam sends
ACK to OK... So after this strange scenario I successfully hear
invite to leave voice mail to AT&T endpoint...
What I saw:
I look at codecs- at OK i See ulaw codec, so at my INVITE ulaw
presents too.
With other providers calls succesfully established.
Does Anyone have an experiense with calling to AT&T from
Kamailio.
P.S. calls through our trunk to AT&T from asterisk
establishes succesfully too.