On Wed, 2010-02-17 at 12:56 -0800, Pizza Napoletana wrote:
> Using sipx 4.1.6.
> 
> My snom 870 phones seem to get MWI NOTIFY messages correctly for a few
> hours after the phones are rebooted. But after those few hours, when a
> message is left, no NOTIFY messages are sent out from sipx
> (per /var/log/sipxlogs/*). And if I reboot the phone again, everything
> is fine.
> 
> sipx GUI shows that the phone is still registered during the time the
> NOTIFYs are not being sent. I can also call that phone during that
> time. Everything seems fine, except the MWI part.
> 
> Any idea what might cause sipx to stop sending NOTIFYs and why a phone
> reboot causes it to send them again for a while?

It could be that the phone is not correctly noticing that the duration
of the subscription is shortened by a random interval.  If that's the
case, then it should eventually start to work again, then fail again,
etc.

There's a script in sipXtools called 'regtimes' that checks this for
registrations - it could be modified to do the same check for
subscriptions.


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