Have som 7921 wireless on CUCM 6.1.
the phones could not call internally between themselves, the call get set up, but when you answer there are no voice!
If we call an internal office phone, or an external everything is ok. The same if we dial through PSTN, then all works fine. Have checked and the phones are all in the same CSS.
someone has any ideas?
one way audio or no way audio is mostly related to routing issues.
CCM is able to recognize both phones since they are registed and handles all the sccp for both phones, but when it comes to open the logical channel and start media transmission the phones send the RTP stream directly between them
since the call goes fine up to the point you can dial and answer, the issue is at the media establishment point
you might want to check that the routing is correct and make sure there are no FWs or ACLs that might be blocking the RTP stream