Is this a new phone? What errors do you see in the status messages?
To factory reset the phone:
From the Administrator Settings menu, unlock phone options, then choose Reset Settings > All Settings
Hi, I've loaded factory defalut, bur the phone won't register.
in the status I see the following messages (always the same)
Aggiornamento trust list
Trust list aggiornata
I don't know what language that is, but it looks like the phone cannot download its configuration file from CUCM. Is the TFTP server address set to the CUCM TFTP server? Is the phone configured in CUCM?
I think that the problem is the firmware version.
Actually on the phone is loaded the 9.0.3
The CUCM 8.6 Has a 9.2.1.
I think that is necessary load an intermediate release (like 9.1.1)
But the problem is that I don't have access to download it.Can you have this release?
Thanks in advance
you need to do
2911POS(config)#voice register global
and phone will register