[asterisk-ss7] Audio Lost

[Anton]

openh323 was segfaulting the box for me every couple of 
thousands of calls. So it just unstable :)

On 29 June 2006 20:01, Mr.Surender Reddy wrote:
> Dear Anton,
>                   Why not using openH323 instead of IAX
> can u please explain me this if u dont mind.if
> possible.And can u give me ur best recomendation plz so
> that may be i can implement to check that if that slove
> the problem to me.
>
> regards
> surender
>
> On 6/29/06, Anton <anton.vazir at gmail.com> wrote:
> > Dear Anders,
> >
> > If you could have a look into the topic - that would
> > help us very much.
> >
> > For those, having the audio-lost problem I would
> > suggest the following way - which helps me, and brought
> > audio lost somewhat down (though, it does not
> > elliminate it completely, but you can offer a service
> > atleast)
> >
> > -------------
> > I'm managed to make it
> > not-so-extensive, by interconnecting two asterisk boxes
> > via IAX2 with JitterBuffer enabled. While using it
> > directly (chan_ss7) as gateway for SIP voip - the audio
> > lost makes things commercially unusable completely.
> >
> > so my current scheme, which brings down audio-lost
> > problem TELCO <-> [chan_ss7->IAX2 ] <-> [IAX2->SIP] <->
> > WORLD
> >
> > direct scheme
> > TELCO <-> [chan_ss7 -> SIP ] <-> WORLD
> > is commercially unusable
> >
> > that's why I'm sure making the JB or incorporating
> > chan_zap's JB for chan_ss7 would solve the problem,
> > since I have not heard the asterisk's PRI has that
> > problem - but in meaning of communication with TDM
> > cards - there is no difference. So the implementation
> > is the reason. Maybe PRI/chan_zap guys know something
> > chan_ss7 guys does not know
> >
> > I would add that current problem MOST LIKELY happens on
> > satellite links mostly - when jitter may vary in
> > 50-100ms
> >
> > What I also noted, while playing with chan_oh323 -
> > which uses OPENH323 code, with self JitterBuffer, audio
> > lost is MUCH lower, in comparision with SIP or
> > chan_h323 (which DOES NOT HAVE JitterBuffer) so the
> > packet arrival instability clearly affecting that.
> >
> > Anton.
> >
> > On 29 June 2006 17:49, Mr.Surender Reddy wrote:
> > > Yes sir We tried Dell ,HP Machines but it endup with
> > > the same audio lost .
> > >
> > > regards
> > > surender
> > >
> > > On 6/29/06, Patrick <asterisk-list at puzzled.xs4all.nl>
> >
> > wrote:
> > > > On Thu, 2006-06-29 at 17:21 +0530, Mr.Surender
> > > > Reddy
> >
> > wrote:
> > > > > Dear sir,
> > > > >             We have tired all the options
> > > > > avaliable on the net and the things like patches
> > > > > and what ever the other users suggested but we
> > > > > are unable to move this problem out .The voice
> > > > > comes excellent but when the Choppy voice doesnt
> > > > > continues always but may be for 10 to 30 sec for
> > > > > 1 or 2 or 5 or 10 minutes it regurally comes and
> > > > > goes.IF this problem is solved i can say that
> > > > > chanss7 is the best as the voice we have seen no
> > > > > other providers here could gives this quality we
> > > > > are only loosing the market as we have this audio
> > > > > lost problem and people doesnt want to buy the
> > > > > callingcards at all.If any one could find a
> > > > > solution that will be a great help for this
> > > > > chanss7.
> > > >
> > > > Have you tried another server?
> > > >
> > > > Regards,
> > > > Patrick
> > > >
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-- 
With Best Regards,
Anton

--------
Anton V. Gnitko
Technical Director
Eastera Co. Ltd.
+992 372 270101
+992 372 213627
http://www.eastera.net