On Mon, 2008-10-27 at 20:14 -0400, Scott Barr wrote:
> I have about 30 of these phones with the Standard version of the
> firmware and all register without issue and work fine until..
>  
> ...you hit 20 minutes on a call and the call automatically drops. I
> have been able to reproduce this with several phones and it is
> consistent.
>  
> I have many Polycom 430s and 601s that work just fine. I am using sipX
> 3.10 and have a regular configuration on the Siemens phones based on
> the Siemens admin manuals and what I have found to work with sipX -
> except, of course, when a call is dropped precisely 20 minutes.
>  
> Has anyone experienced a similar issue? Resolved?

Have not heard that one before here...


To debug this, it may help to trace the message flow and see what's
going wrong.  See:

http://sipx-wiki.calivia.com/index.php/Display_SIP_message_flow_using_Sipviewer#Getting_SIP_Messages_to_display

when you get the trace data, take a look at it using sipviewer and/or
post the trace with a description of your configuration (identify
components by IP address), what you were doing, and which call in the
trace you're talking about (by call-id or frame number in the trace,
preferably).


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