[Asterisk-Users] IAX2 update - timestamp issue within iax pkts

[Rich Adamson]

No, this is an iax2->sip/rtp->Cisco 7960 problem. (Has nothing to do
with LANs, Grandstreams, Snom, etc, etc.)

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> Would this fix also help random quality issues both on a LAN and also 
> with a remote SIP based installation running CVS from 3/22.
> 
> We're having too frequent complaints in conjunction with Grandstream 
> phones and very stuttery/choppy sound, usually outgoing to land lines, 
> to the point of being unintelligible, but also on internal voicemail 
> messages. Our voice LAN is a dedicated 100Mb ethernet switch for voice, 
> and no general network traffic.
> 
> Thanks,
> Ryan
> 
> On Apr 14, 2004, at 4:26 PM, Rich Adamson wrote:
> 
> >
> > For those that might be using Cisco 7940/7960 sip phones and placing
> > calls across an iax2 link, we think the voice quality problem has been
> > identified and corrected. The dev cvs should be updated as of about
> > 3:30pm CDT today (April 14).
> >
> > <snip>
> >
> > If you use iax2 and Cisco sip phones, please update from cvs and give 
> > it a
> > try. I am not aware of any other sip phone vendor that is sensitive to
> > these timestamps, but there could be others.
> >
> > Keep in mind the fix addresses iax2 timestamp problems "at the distant
> > end", therefore iax updates will be required at both ends of an iax 
> > link
> > to address the end-to-end audio quality problem.
> 
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