Hello Community Members,
I am currently having an issue with my Cisco Unity Express setup. I am running CME on a Cisco 2951 (IOS 15) and Cisco Unity Express 8.6 from an ISM. The CME and CUE are integrated via SIP and I do have a SIP Dial Peer from CME to CUE.
Everything is working well internally. When I dial from an IP Phone registered on the CME to an Auto Attendant number set up on CUE, I easy get connected and I am able to dial by name or number and the call is correctly routed to the right extension.
The CME connect onto my ITSP via a SIP Trunk and the ITSP has forced all incoming calls into the CME to G.729r8 only. But they have allowed me to choose any codec I want for outbound calls such as G.711 and G.729.
When I dial from the PSTN into the CUE, the Auto Attendant answer the call and prompt me if I would like to dial by extension or name. When I select the option to dial by extension and enter the extension followed by #, the Auto Attendant says, calling extension "5001" and then silence on the line until the call get disconnected after sometimes.
While my external call is connected onto the Auto Attendant, I can see that there is an active transcoding session going on converting the call coming from the ITSP from G.729 to G.711. Once I have entered the extension that I am trying to dial followed by such as "5001" then #, the conference resources that was initially allocated disappear and I hear nothing but silence.
Is there anything that I could do in order to fix this?
This setup used to work properly before because my ITSP was allowing both G.711 and G.729 inbound. Since they have locked that down to G.729, I am stuck.
When my external call is connected onto the Auto Attendant, I can see the following output on CME:
CME#sh sccp connection
sess_id conn_id stype mode codec sport rport ripaddr conn_id_tx
1769481 36 xcode sendrecv g711u 28196 2000 192.168.0.1
1769481 40 xcode sendrecv g729 19970 2000 192.168.0.1
Total number of active session(s) 1, and connection(s) 2
CME#sh sdspfarm sessions summary
max-mtps:5, max-streams:16, alloc-streams:16, act-streams:2
ID MTP State CallID confID Usage Codec/Duration Type
==== ===== ====== =========== ======== ============================= ============== ===========
1 1 IDLE -1 0x0 G711Ulaw64k /20ms Audio
2 1 IDLE -1 0x0 G711Ulaw64k /20ms Audio
3 1 IDLE -1 0x0 G711Ulaw64k /20ms Audio
4 1 IDLE -1 0x0 G711Ulaw64k /20ms Audio
5 1 IDLE -1 0x0 1 IDLE -1 0x0 G711Ulaw64k /20ms Audio
7 1 START 9838 /2 ms Audio
7 1 START 9838 0x1B0007 Ip-Ip G711Ulaw64k /20ms Audio
8 1 START 9837 0x1B0007 Ip-Ip G729 /20ms Audio
9 1 IDLE -1 0x0 G711Ulaw64k /20ms Audio
10 1 IDLE -1 0x0 G711Ulaw64k /20ms Audio
Any idea on how to go about this? I have transcoding resources configured locally and registered on the CME.
Warm regards,
Johnny Kabundi.
