[asterisk-users] Call quality - how to debug

[--[ UxBoD ]--]

----- "Steve Howes" <steve at geekinter.net> wrote: 
> On 2 Jun 2009, at 14:14, Adrian Marsh wrote: 
> 
> > Hi All, 
> > 
> > I’ve a 1.4.15 A*k server supporting several users (approx 80 total, 
> > but <10 sim calls usually). I’ve one user who complains of 
> > intermittent bad calls, though I suspect the bad calls are across 
> > the board, but intermittent. 
> > 
> > Inbound calls are via in IAX trunk from Gradwell. CPU stats say that 
> > Asterisk never uses more than 4-5% cpu, systems idle besides that. 
> > Memory seems ok too. Network utilisation is < 300kbps. The voice 
> > network (clients + server) sit on their own dedicated 100Mb 
> > switches. Stats from the switch say its lightly loaded. 
> > 
> > I’ve turned on voicefile recording. What we hear, when there is a 
> > bad call, is stuttered speech, from BOTH sides (so local SIP client, 
> > and remote IAX inbound call). 
> > Debug from asterisk just shows the call inbound, answered and then 
> > hung up as per normal. 
> > 
> > I’m at a loss of how to debug the voice issue further, without 
> > putting a wireshark PC on the switch, port-mirroring the server and 
> > then capturing all of the traffic in a round-robin-type capture and 
> > even then I’m not sure what that will achieve. 
> > 
> > I’m going to switch from IAX to SIP for the inbound calls for that 
> > user and see if that helps. 
> > 
> > Any ideas welcome, 
> > 
> 
> What internet connection do you have... 
> _______________________________________________ 
> 
> 
Physical or virtualised server ?


Best Regards,

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