03-27-2023 02:12 PM
Hi ...
I need an assist me in attempting to complete a SIP call to a Cisco Call Manager (CUCM11.5) from an Avaya IPOSE 11.1. I am able to successfully call from any Avaya IP Phone on the IP Office to any extension on the CCM, but I cannot complete any calls from the CUCM to the IPOSE. Here is a sample sys monitor output from a failed call.
Below is Cisco’s feedback as well, with the conclusion in the last line in red.
why its respond with 503 error ?
03-27-2023 07:10 PM
3- Avaya respond to cucm with 503 Service Unavailable
..
SIP/2.0 503 Service Unavailable
Via: SIP/2.0/TCP 172.20.101.21:5060;branch=z9hG4bK2d119759fb4dc4
From: "jabber Test" <sip:9712222@172.20.101.21>;tag=29264673~a3e24dc8-8444-4488-bc75-cbe3658de430-35285859
Call-ID: 2c917900-41813c63-20f56d-156514ac@172.20.101.21
CSeq: 101 INVITE
Allow: INVITE,ACK,CANCEL,OPTIONS,BYE,INFO,REFER,NOTIFY,UPDATE
Supported: timer
Server: IP Office 11.1.2.3.0 build 47
Reason: Q.850;cause=88;text="Incompatible destination" >>> This is the issue. Find out why avaya send Incompatible Destination.
To: <sip:32091846@10.234.11.1>;tag=ffe4ad8ebbe4dfe2
07-24-2023 09:08 AM
Anyone have an answer for this? I am having the exact same issue.
07-25-2023 01:47 AM
As @Nithin Eluvathingal has already stated: Check with the Avaya technician
The error is coming from Avaya, so what do you want to troubleshoot on the CUCM side?!
Avaya needs to say, how they want the INVITE.
Come on guys, this has nothing to do with any technical stuff at all.
If B says "I don't like what A is sending", without mentioning why he doesn't like it, there is nothing A can change.
07-25-2023 02:50 AM
In the OP output the invite is sent with both video and voice capabilities. That could be what is causing the Avaya side to send the incompatible message. Try adding the command voice-class sip audio forced on the dial peer(s) facing the Avaya system. For more information please see this document. Video Suppression
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