[cisco-voip] Adding BLF to 7962 causes phone to deregister permanently

[Mike King]

What's the firewall at the central site?  What version of Code is it
running.

As a troubleshooting measure, can you disable inspection on skinny/sccp
protocols?

Mike

On Wed, Jan 26, 2011 at 1:43 PM, Sechaba Mokoena <sechabam at gmail.com> wrote:

> Hi Wes,
>
> This phone is registered at an SRST site. The router sits behind an Expand
> Accelerator. UCM is behind a firewall at the central site. It worked fine
> until I upgraded the firmware to version 9.1.1. I've downgraded to the
> previous firmware but the problem still persists.
>
>
> Kind regards,
>
> Sechaba Mokoena
>
>
>
> On 26 Jan 2011, at 2:59 PM, Wes Sisk <wsisk at cisco.com> wrote:
>
> This sounds very much like what happens when you have a transit network
> device doing packet/protocol inspection that does not understand the
> messaging associated with those features.  Is there a NAT boundary, firewall
> doing inspection, or similar network device between this phone and the CM
> server?  Can you move the phone closer to the server to confirm it is not a
> network issue?
>
> Regards,
> Wes
>
> On 1/26/2011 7:23 AM, Sechaba Mokoena wrote:
>
> Hi,
>
> I've got a 7962 with one 7915 expansion module. When I change the phone
> button template on the phone to include BLFs, the phone deregisters and goes
> into SRST mode. I also lose Line 1 on the phone. The phone resgisters when
> the default phone button template is used. I'm using the lastest firmware
> for the phone and the expansion module. Has anyone encountered a similar
> problem.
>
> Kind regards,
>
> Sechaba Mokoena
>
>
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