Cisco Meeting Server suddenly stopped registering with CUCM

[Md. Saiful Islam Jehadi]

My CUCM version is 12.5 and CMS Version is 2.9.5, everything was fine almost two years. Suddenly we are not able to dial CMS Room. I verified and found CMS CFB is not registered with CUCM. Can you please help me to solve this issue.

Saiful Islam

[b.winter]

What is your troubleshooting done? Without anymore info or debug / logs, nobody will be able to help you. We cannot see what you see, nor are we able to read someone's mind.

So check the logs of CMS and CUCM.
Is the SIP trunk to CMS "up"?
How are the settings in the CFB for CMS?

[Md. Saiful Islam Jehadi]

Dear Sir,

Thanks for your response.

SIP Trunk is down. I can see Certificate is Expired in CMS:

Issuer: CN=VSAT-DNS-CA
Validity
Not Before: Feb 1 04:14:36 2021 GMT
Not After : Feb 1 04:24:36 2022 GMT

[b.winter]

What you need help then for? I mean, you just gave the answers to yourself.
Check why the SIP trunk is down and fix the certificate issue (this happened already 9 months ago^^)