[Asterisk-Users] unlocking cisco 7940 phone

[Rich Adamson]

> Unfortunately, it didn't work.  Do you know any other ways?
> 
> 
> 
> Brian S. Reale
> President
>  
> Colosa Inc.
> Tel:  305.675.1400 ext. 201
> Fax: 305.402.0282
> www.colosa.com 
> www.ProcessMaker.com 
>  
>  
> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com
> [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Tom Vile
> Sent: Saturday, September 17, 2005 9:04 PM
> To: Asterisk Users Mailing List - Non-Commercial Discussion
> Subject: Re: [Asterisk-Users] unlocking cisco 7940 phone
> 
> try going into settings and then unlock config and try typing in cisco
> 
> On 9/17/05, Brian <brian at colosa.com> wrote:
> >  
> >  
> > 
> >   
> > 
> > I have a Cisco 7940 phone with a locked SIP configuration.  There is no
> tftp
> > server configured in network settings.  Does anyone know how to get this
> > phone to upgrade its firmware and thereby unlock the SIP settings?  (The
> **#
> > combination on the Cisco manuals does not work). 
> > 
> >   
> > 
> > -brian 

I just had to do one the other day; the phone shipped with mgcp installed
with some Doctors name appearing on the screen. It had been locked down
pretty tight.

The only way that I could do it is to use a sniffer (eg, ethereal) to
see the IP addresses it was trying to reach.

I then put the phone on a network that had a linux server with that
exact addressd on it. The phone happily read the tftp files that I
had prestaged on the linux server, and upgraded itself to the sip image.

The upgrade process wiped out all passwords, etc, and reset the phone
to factory defaults for sip (except for the password, which I specified
in a tftp config file).

Once that was done, I could access the phone menues just fine and reset
everything to the way that I wanted it.

If you're not comfortable reading packet traces, then you'll probably
have to send the phone to someone that is.