Hi, i have a similar problem...but with a downgrade :)
Registered with Cisco Unified Communications Manager x.x.x.12
Active Load ID:
Inactive Load ID:
Requested Load ID:
Inactive Load Failure Reason
Internal Phone Error
My phone come from factory with a 126.96.36.199 firmware (that is also uploaded on my server), in Device->device setting->device Default
i have set for the 8851 model:
Load info: sip88xx.11-5-1-18
My conf is:
Subscriber: x.x.x.12, x.x.x.13, x.x.x.14 (TFTP), x.x.x.15 (TFTP)
I also try to see on TFTP File Management of the x.x.x.14 and .15 and i see the file "sip88xx.11-7-1-17.loads"
any suggest ?
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