Hi All,
We are having Avaya XT5000 registered over CUCM, able to call Extension to Extension i.e. Avaya XT5000 to Cisco IP Phone vice-versa.
Also having Cisco Room Kit Plus configured on the Same CUCM.
Now we want to call MS Teams which is integrated with WebEx Cloud from CUCM registered Devices.
Able to Call from Cisco Room Kit plus without any issues but Avaya XT5000 is facing challenges.
Call Flow - CUCM --- Exp C--- Exp E Internal Lan --- Exp E DMZ --- Webex Cloud CVI --- MS Teams
Dialing URI --- 1348091465.abc@m.webex.com from Avaya and Cisco.
When analyzing the logs of CUCM getting error as below.
MSGTAG: 328431
MSG_TYPE: UCM_CTRACE SENDER: 10.10.11.40 TIMESTAMP: 2024/03/04 17:57:23.101 CORRELATIONID: 2,100,255,1.370^172.22.109.0^* GUID: 611f5220-336c16ac-13c4-50029-19dd-3da477ab-19dd^*^* MSG_LABEL: 503 Service Unavailable RECEIVER: [SEP0003D602A158] 172.22.108.51 MAC_ADDRESS: SEP0003D602A158 Detailed Sip Message SIP/2.0 503 Service Unavailable Via: SIP/2.0/TCP 172.22.108.51:5060;alias;branch=z9hG4bK-19dd-650b14-2a098b57 From: 30010< sip:30010@10.10.11.40:5060;transport=tcp> ;tag=627810c8-336c16ac-13c4-50029-19dd-598194f9-19dd;epid=0003D602A15800 To: < sip:1348091465.abc@m.webex.com:5060;transport=tcp> ;tag=120202~35c8e48b-5971-4792-81c6-3f09c13086da-25625965 Date: Mon, 04 Mar 2024 12:27:14 GMT Call-ID: 611f5220-336c16ac-13c4-50029-19dd-3da477ab-19d.
Thanks in Advance.....
