[asterisk-users] Sound quality issue

[Andrew Thomas]

Something that often gets forgotten is the on-site LAN infrastructure as well.

It could be a bad/faulty switch, rubbish cabling, induced interference etc. etc. all at the customers premises.

Maybe a handset plugged directly in to the back of the router, before it hits the LAN would tell you whether the call is actually getting 'distorted' en-route or not?



-----Original Message-----
From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Administrator TOOTAI
Sent: 16 January 2011 12:28
To: asterisk-users at lists.digium.com
Subject: Re: [asterisk-users] Sound quality issue


Le 15/01/2011 20:38, Cédric Lemarchand a écrit :
> Hello,
>    
Hi
> [...]
> I am sure there are RTP packets losses somewhere, except RTP debug in 
> the asterisk CLI, how can i determine where the problem come from ?
>    
[...]

You don't tell which protocol (SIP, IAX, H323) nor which asterisk 
version. FYI Asterisk 1.6.2.15 in iax had audio quality problems, solved 
in 1.6.2.16.

If you have the possibility, connect directly a phone to the server, eg 
Device - LAN (no MPLS) - Asterisk. Check also if a call to echo test has 
the same bad quality.

-- 
Daniel

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