Smells like a feature request to me...  clock fudge.  :-)

> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:sipx-users-
> [EMAIL PROTECTED] On Behalf Of Gabor Paller
> Sent: Thursday, November 20, 2008 4:40 AM
> To: Dale Worley
> Cc: [email protected]
> Subject: Re: [sipx-users] Re-registration problem
> 
> Hi,
> 
> It took some time but I went after the re-registration issues.
> The NCH Express Talk softphone, Basic Free Version, V3.08 does the
> wrong
> thing. It requests 1 hour subscription expiration period and ignores
> the
> expiration period returned by SipX. Therefore its subscription will
> expire and it will not be accessible until its hourly re-registration.
> It's a pity because we had the best experiences with this softphone.
> 
> The Cisco 7940 (SIP image, P0S3-08-5-00) is a more complicated issue.
> The phone processes SipX expiration response correctly but it tries to
> re-register exactly after that time period. It seems that due to minor
> differences between the clock of the PC running SipX and the clock of
> the Cisco phone, the Cisco phone is regularly late. Not by much, the
> maximum time it spent unsubscribed was less than 1 minute. It still
> happens, however, and when it happens, the endpoint is unregistered
and
> cannot receive calls.
> 
> Would it be possible for SipX to "lie" in its subscription expiration
> time, e.g. report back X seconds to the endpoint and set its internal
> timeout to X+D seconds? Minor clock differences between the device and
> the endpoint could be then overcome.
> 
> Regards,
> Gabor
> 
> -----Original Message-----
> From: Dale Worley [mailto:[EMAIL PROTECTED]
> Sent: 13 November 2008 16:06
> To: Gabor Paller
> Cc: Nikolay Kondratyev; [email protected]
> Subject: Re: [sipx-users] Re-registration problem
> 
> On Thu, 2008-11-13 at 12:38 +0000, Gabor Paller wrote:
> > It seems to happen with Cisco 7940 (SIP image, P0S3-08-5-00). It is
> > still unconfirmed, seems to happen spuriously and only for a few
> > seconds.
> 
> There's a way to extract just the messages regarding a single phone:
> 
> merge-logs --include-method=REGISTER --ft=[ext.no.]@
> /var/log/sipxpbx/sipregistrar.log
> 
> That will generate file "merged.xml" that you can feed into sipviewer.
> But it's also readable by text.  What it contains is all REGISTER
> messages and responses to/from the registrar that contain the string
> "[ext.no.]@" in their From or To headers, which extracts all the
> registration messages from phone [ext.no.].
> 
> Look at those messages to see when the phone registers, and compare it
> to the expires times provided in the REGISTER responses.
> 
> Dale
> 
> 
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