Cisco phone 7841 not registering

[Tazio4436]

Hello everyone,

I have some Cisco 7841 phones which cannot register.

In CUCM the load information is sip78xx.11-5-1-18 but the 7841 software version shows sip78xx.11-1-1MSR2-1.loads.

I tried a firmware upgrade to sip78xx.11-5-1-18 but it did not work.

Any help will be much appreciated.

Thanks

Tazio

[Jaime Valencia · Accepted solution]

The phone is loaded with 3PCC/MPP FW which is not supported with CUCM, that's why it doesn't register.

If you want to register it with CUCM you would need to migrate from 3PCC/MPP to Enterprise FW, all details are at upgrade.cisco.com, there may be associated costs as you need a migration license.

[Tazio4436 · Accepted solution]

Thank you very much for your help.