Firmware problems in Cisco 6921 phones

[reg_cisco]

Good morning everybody,

I offer firmware for Cisco 6921 SCCP phones in the CUCM 8.5 SCCP69xx.9-3-3-2-SR1 configured in device defaults. CUCM System version: 8.5.1.11900-21.

Only seven Cisco 6921 phones, only in one site of my company stopped working suddenly. There were registered but without dial tone and you couldn't dial. I have more than two hundred Cisco 6921 SCCP phones configured.

I performed a workaround to resolve this issue configuring SCCP69xx.9-0-3-0 in phone load name, restarting Cisco TFTP service and then restarting the phones but I can see in one phone that:

App Load ID		9.0.2.0
Boot Load ID		0.0.0.14
Hardware Revision		5

I don't understand why app load id after configuring SCCP69xx.9-0-3-0 is different from the phone firmware configured.

I'd like to know the main causes of this firmware problems and practical knowledge working with firmwares in Cisco phones.

Thanks in advance.

[mohamed helmy]

Hi,

How many TFTP servers in the cluster?

also please check if these seven IP Phones get their DHCP with option 150 pointing to which TFTP

Regards.

Mohamed Helmy

[reg_cisco]

I have two TFTP servers, enabled on publisher and suscriber.

DHCP protocol is offered to phones by a Windows server with 150 option enabled to use publisher and suscriber like TFTP servers.

All phones are registered in suscriber and all firmwares are in both servers.