Re: [SLUG] choppy audio over IAX trunk in Asterisk

From: Chris Mathey (slug@mathey.org)
Date: Sat Oct 27 2007 - 07:48:26 EDT


steve szmidt wrote:
> On Friday 26 October 2007, Chris Mathey wrote:
>>> If you pass through any router see if it supports TOS.
>> I get consistent sub 40ms rtt between hosts. Also when the trunk is SIP
>> between the 2 hosts there is no issue (same codec g.711).
>> The choppy audio only comes from the B side. B side can hear me fine.
>
> Getting 40ms does not mean packets cannot be coming in late, or out of order.
> Ping is using icmp while your voice is on udp, routers can deal with either in
> any way all according to how they have been programmed.
>
> However swapping with SIP is pretty telling as it does indicate an issue with
> iax.
>
> Of course there are known issues with iax but usually only when you get up to
> 50 simultaneous connections. I got several Asterisk servers running iax and
> do not see your issue.
>
> I'd suggest you sign up with the asterisk user list, which is a very high
> volume list, and others have probably run into it.
>
Thanks Steve, I'm going to post this over there as well.
Bedides default IAX configuration did you adjust anything on your IAX
channels?

-----------------------------------------------------------------------
This list is provided as an unmoderated internet service by Networked
Knowledge Systems (NKS). Views and opinions expressed in messages
posted are those of the author and do not necessarily reflect the
official policy or position of NKS or any of its employees.



This archive was generated by hypermail 2.1.3 : Fri Aug 01 2014 - 19:48:59 EDT