[Asterisk-Dev] Bug 14 in bug tracker (fwd)

[Chris Heiser]

This actually appears to be a bug with the X-Lite Sip Phone.
I've done some packet captures, and the X-Lite violates RFC2833.

For the Payload of the RTP packet for DTMF, the RFC states:

"   duration: Duration of this digit, in timestamp units. Thus, the
           event began at the instant identified by the RTP timestamp
           and has so far lasted as long as indicated by this parameter.
           The event may or may not have ended."

X-Lite never increments the duration field of the RTP packets for DTMF
digits.  I'm sure this is confusing Asterisk.  I'd say e-mail the X-Lite
folks and tell them they have bugs.

--Chris Heiser

> -----Original Message-----
> From: asterisk-dev-admin at lists.digium.com [mailto:asterisk-dev-
> admin at lists.digium.com] On Behalf Of Chris Heiser
> Sent: Thursday, July 24, 2003 6:47 PM
> To: asterisk-dev at lists.digium.com
> Subject: Re: [Asterisk-Dev] Bug 14 in bug tracker (fwd)
> 
> Peter,
> 
> Can you send a tcpdump of the session between asterisk and the X-lite
> phone?
> 
> Something like: tcpdump -s 0 -w xlite-phone-dump host [x-lite ip address]
> Make sure you run it while you're not logged in or otherwise connected to
> Asterisk (so the tcpdump only has the packets between the X-lite phone and
> Asterisk)
> 
> I'd say just e-mail it to me direct as the file will probably be a little
> big to go out on the mailing list.
> I've had to debug other DTMF issues with other devices.  (I've come across
> a
> few sip UA's that ignore the SDP info that Asterisk sends out).  Maybe I
> can
> be of some help.
> 
> --Chris Heiser
> 
> ----- Original Message -----
> From: "Peter Grace" <pgrace at fierymoon.com>
> To: <asterisk-dev at lists.digium.com>
> Sent: Thursday, July 24, 2003 3:54 PM
> Subject: [Asterisk-Dev] Bug 14 in bug tracker (fwd)
> 
> 
> > Oops.  Helps if you have the list address right.. See below!
> >
> > ---------- Forwarded message ----------
> > Date: Thu, 24 Jul 2003 15:04:44 -0400 (EDT)
> > From: Peter Grace <pgrace at fierymoon.com>
> > To: asterisk-dev at digium.com
> > Subject: Bug 14 in bug tracker
> >
> > Guys,
> >
> > I just fired in a bug report, but I'll give the rundown:
> >
> > http://bugs.digium.com/bug_view_page.php?bug_id=0000014
> >
> >
> > X-Lite's DTMF problems with voicemail may not be X-lite's fault...  I
> was
> > tracking DTMF between rtp.c and channel.c and it looks like the system
> is
> > ignoring the first couple digits.  Check the bug report for full debug
> > messages...
> >
> > Thanks,
> > Pete
> >
> > _______________________________________________
> > Asterisk-Dev mailing list
> > Asterisk-Dev at lists.digium.com
> > http://lists.digium.com/mailman/listinfo/asterisk-dev
> >
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