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Cisco IP Phone 6821 Multiplatform Phones Fail to Upgrade or Get Stuck in a Reboot Loop While Attempting to Register to a Call Controller
What is the problem?
When attempting to onboard a Cisco IP Phone 6821 Multiplatform Phone, CP-6821-3PCC-K9, the ...
Can you run a SIP debug on the CUBE from the ITSP? I've seen this behaviour before myself and it was because the ITSP was using G.711a and the IVR files on the CUCM are only for G.711u - I had to do transcoding on the CUBE to convert it to u-law.And...
Hey Scott,Just wondering whether you'd got this working yet... I have come across this in loads of HCS deployments I have been involved in recently and to get a proper solution from the CUCM you need to be on 8.6.2 - this is the first release that h...
