[asterisk-ss7] Audio Lost

[Anders Baekgaard]

Hello Anton,

I'll take a look into the problem and report back to you soon.

Best regards,
Anders Bækgaard


On Thursday 29 June 2006 16:04, Anton 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
> > >
> > > _______________________________________________
> > > --Bandwidth and Colocation provided by Easynews.com --
> > >
> > > asterisk-ss7 mailing list
> > > To UNSUBSCRIBE or update options visit:
> > >   http://lists.digium.com/mailman/listinfo/asterisk-ss7