[cisco-voip] DSP Keepalive Timeout on 7940 phone w/7.2(3)

[Justin Steinberg]

Is this still only happening to one phone?    If so, did you recently
upgrade the firmware on that phone?

I upgraded about 9,000 7960 phones from firmware 5.04 to 7.2.2 and
after the upgrade one phone randomly displayed 'DSP Timeout' messages.
 I ended up performing the factory reset command below and reflashing
the phone .  But it still had the issue.  I think I ended up just
replacing that phone.

Maybe the phone's DSP has gone bad or can not handle the new software?



Factory reset command:

Step 1 Unplug the power cable from the phone and then plug it back in.
The phone begins its power up cycle.

Step 2 While the phone is powering up, and before the Speaker button
flashes on and off, press #. Each line button flashes on and off in
sequence.

Step 3 Press 123456789*0#. You can press a key twice in a row, but if
you press the keys out of sequence, the factory reset will not take
place.

After you press these keys, the phone will prompt you to save network
cfg, 1 to yes and 2 to no, so press 2 and the phone will go through
the factory-reset process. If that button sequence should not work,
although it should, please try this one: 3491672850*#



Justin



On 3/7/06, Erick Bergquist <erickbe at yahoo.com> wrote:
> This is displayed on the phone itself. Everything is
> G711 and this also happens IP phone to IP phone
> between users in same building in same device pool.
>
> --- "Fretz, EA Eric @ IS" <Eric.A.Fretz at L-3com.com>
> wrote:
>
> > Are you transcoding your calls?  I have noticed a
> > lot of DSP timeouts on my
> > PVDM-based DSP resources.  If a DSP times out during
> > a call, the call hangs
> > up and the DSP resets.
> >
> >
> > -----Original Message-----
> > From: cisco-voip-bounces at puck.nether.net
> > [mailto:cisco-voip-bounces at puck.nether.net] On
> > Behalf Of Erick Bergquist
> > Sent: Monday, March 06, 2006 7:14 PM
> > To: cisco-voip at puck.nether.net
> > Subject: [cisco-voip] DSP Keepalive Timeout on 7940
> > phone w/7.2(3)
> >
> >
> >
> > Anyone have any insight as to why a phone now and
> > then
> > will disconnect a call and see "DSP Keepalive
> > Timeout"
> > on the phone itself? Happens on external calls and
> > also internal calls (IP to IP Phone) now and then.
> > Maybe once a week, sometimes 2-3 times a day, etc.
> >
> > This is on CCM 4.1(3)sr2 and 7.2(3) phoneload. I did
> > put it on 7.2(4) today but did not see any specific
> > items fixed but maybe re-flashing it may fix
> > something
> > up. Only one phone is having this problem and rest
> > are
> > fine. Switchport is clean of errors, etc. They have
> > been on 4.1 for 1-2 months now - upgraded from
> > 3.3(3).
> >
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