7841 cannot be registered with CUCM via MRA

[Yangjp715]

Hi All,

We are using ExpresswayC/E cluster in version x8.10. Now i have a 7841 with firmware 10-3-1 (also tried 11-5-1) cannot be registered via MRA. I am using my home network and assigning a private IP to test this, Internet is working by using the same port and the same IP. I used 8845 by assigning a public IP in the office last week and it worked. Is there anyone who can help me with this?

Thanks.

[Yangjp715]

We are using ExpresswayC/E cluster in version x8.10. Now i have a 7841 with firmware 10-3-1 (also tried 11-5-1) cannot be registered via MRA. I am using my home network and assigning a private IP to test this, Internet is working by using the same port and the same IP. I used 8845 by assigning a public IP in the office last week and it worked. Is there anyone who can help me with this?

Thanks.

[HARIS_HUSSAIN]

Collect the Logs from Expressway-C and E and Upload to Collaboration SOlution Analyzer to analyze the same.

How to collect Exp-C/E Logs

https://www.cisco.com/c/en/us/support/docs/unified-communications/expressway/213360-collect-expressway-vcs-diagnostic-log-fo.html

Collaboration Solution Analyzer

https://cway.cisco.com/csa/

Thanks,

Haris

[Yangjp715]

From SRV checker, it showed that i need to create SSL certificate with either the top level domain or the subdomain  in the SAN field and upload it to the Expressway-E, no other issue is found in the log. Is SSL certificate mandatory for 7841 registration via MRA? And any license is required?

[Mohammed al Baqari]

Hi, your phones need to be in 11.0(1) firmware. That is the 1st officially
supported release.

If you upgrade and not working, go to expressway and generate the network
logs

[Yangjp715]

I am using double NAT in my home network, does it affect 7841 registration via MRA? The firmware of the phone is in 11.0(1) now.

[KronosMan]

Hi Yangjp715

I have this issue too - did you resolve it? 

Ian