[Asterisk-Users] RC1 problem? (Conversation over two IAX2 streams = nasty, gappy audio)

[T. Chan]

Dear All

Now that RC1 is buggy, should we go back to the Dev cvs Head? OR how do we
get the bug resolved in RC1 version and where could we get them?

Thanks

TC

-----Original Message-----
From: asterisk-users-admin at lists.digium.com
[mailto:asterisk-users-admin at lists.digium.com]On Behalf Of hank
Sent: Saturday, August 07, 2004 1:02 PM
To: asterisk-users at lists.digium.com
Subject: Re: [Asterisk-Users] RC1 problem? (Conversation over two IAX2
streams = nasty, gappy audio)


1 what ivr system did you use am curious, 2 what is there contact info for
support?
----- Original Message -----
From: "Andrew Kohlsmith" <akohlsmith-asterisk at benshaw.com>
To: <asterisk-users at lists.digium.com>
Sent: Friday, August 06, 2004 10:34 PM
Subject: Re: [Asterisk-Users] RC1 problem? (Conversation over two IAX2
streams = nasty, gappy audio)


> Jeremy McNamara and I spent some time tonight figuring this out.
>
> (aside: anyone claiming nufone doesn't have decent customer service is
> full of
> shit, who else is gonna spend over 3 hours helping a customer?)
>
> The gappy audio problem isn't quite what I first thought:
> It has nothing to do with IAX2, SIP does it too.
> It has nothing to do with a specific codec.
> It has *everything* to do with native bridging.
>
> home* -IAX2- colo* -IAX2- switch-1.nufone.net
>
> I am using xlite to home* but a zap interface does the same thing, the
> problem
> is with the native bridging between colo* and switch-1.
>
> switch-1 runs RC1
> colo* runs CVS HEAD 20040806 but also ran CVS HEAD 20040604 with the same
> problem.  The gappy audio problem started showing up around the time
> Nufone
> upgraded to RC1.
>
> home* -> colo* GSM and colo* -> switch-1 GSM: dead audio (from nufone)
> 1:02
> into the conversation.  It stays dead for a good long time but the remote
> end
> can hear me (I was calling an IVR and hitting # every 10 seconds or so, it
> could hear me).
>
> home* -> colo* GSM and colo* -> switch-1 iLBC or ULAW, no dead air.
> home* -> colo* iLBC and colo* -> switch-1 iLBC, dead air 1:02 in.
> home* -> colo* iLBC and colo* -> switch-1 ULAW, dead air 1:02 in.
>
> seeing a pattern?  :-)
>
> I've privately sent steve my debug log and a pcap dump of a sample
> conversation.
>
> The conversation is about 6 minutes long and the bulk of it is dead air,
> starting at 1:02.  There are a few (maybe 3 or 4) very short (2s) bursts
> of
> audio from the remote end but mostly dead air.
>
> So it's gappy alright...  but very much so. Note that the gappy audio has
> changed a little as time went on.  When we first started seeing it (around
> the 20th of June or so) it resembled dropped packets or a congested link.
> Short bursts of silence or garbled audio.  The past few days it was
> getting
> to be two to three seconds of dead air and now tonight it dies 1:02 in and
> stays dead for a minute or two, then a burst of audio which quickly
> garbles
> (2s) and then silence for another minute or two.
>
> The IVR I called through Nufone could hear my # key presses.  If I didn't
> hit
> anything the remote IVR would hang up after 20s or so.
>
> Note that there are no native bridging problems to VoipJet.  They run 0.90
> apparently.
>
> Again: nufone' s been great in helping diagnose this.  Highly recommended.
>
> Regards,
> Andrew
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