CUCM 18.104.22.16800-2, SIP Trunk, and E1 with PBX: forwarded calls fail
we have a CUCM 22.214.171.12400-2, and we have configured a SIP Trunk with a Cisco Router, which is connected to a PBX by an E1.
We have this issue: if we make a call from a first Cisco IP Phone to a PBX phone, and this PBX phone has a "forward all" towards a second Cisco IP Phone, the call fails (we receive a fast busy on the first Cisco IP Phone).
I'm not able to access my old voice mail messages all of a sudden. The recording says something like 'the message is currently not available'. This has never happened before in all the years I have been using this system. I have t...