Cisco 9971 phones registration rejected in CUCM 9.1.2

[Lakshman kumar Selvaraj]

Hi

im trying to register a cisco 9971 phone in cucm 9.1 but the registration getting rejected and it displays Telephone Service is unavailable.

Kindl help on this.

[Gordon Ross]

Has this phone been used before on a CUCM cluster? You may want to try resetting the security settings on the phone: Settings -> Admin Settings -> Reset Settings -> Security Settings -> Reset

GTG

[Lakshman kumar Selvaraj]

I did resetting no use. still telephone service is unavailable. these are new phones

[Gordon Ross]

Two more thoughts:

 - Have you looked at the logs on the phone? They might reveal something.

 - Power off the phone, delete the device from CUCM, re-add the device and try plugging the phone in again.

GTG

[Aman Soi]

Hi Lakshman,

you can refer the link.

https://supportforums.cisco.com/discussion/11343316/cisco-ip-9971-registration-rejected

what is exact CUCM version and firmware under Device ---device settings ---device defaults for 9971?

regds,

aman