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Customer has a new CUCM system going in. We've got the cluster at a 7.1(5) code level.
Starting to attach phones, and seeing some really strange behavior. The default firmware load is SCCP45.9-0-2SR1S, so some phones (new out of the box) are simply refusing to upgrade. We take those to 8.5(2) and then they upgrade to SCCP45.9-0-2SR1S and work just fine.
However, some phones are booting up and upgrading directly to SCCP45.9-0-2SR1S. On these phones, the internal web server on the phone does not work. If we downgrade the firmware to 8.5(2) and then upgrade it back to 9.0(2), then it starts working. These are all 7965 phones
This is very strange. Has anyone else seen this behavior?