Re: OT: QOS on Signaling Traffic for Mobile operators, SIGTRAN,

I have run a pilot on this and that run without any error for 3 months.
then it was rolled out for 5 sites as a production pilot.

G.8261 is the ITU standard for syncing the accurate clock.

Google a keyword "G.8261 itu" and the first doc u wills ee in the result is
written by "By Dr. Yaakov Stein, Chief Scientist, RAD Data Communications"
which you may find interesting..

I can say that clocking issue is no more now with PW.
-frog

On Tue, Apr 14, 2009 at 9:44 PM, Marko Milivojevic <markom_at_markom.info>wrote:

> Pseudowires as vendors call them are just standardized approach to
> doing TDMoIP and all of them suffer from the same issue. The point is
> that IP is inheretly asynchronous, while "GSM" requires synch between
> BTS's in order to hand over clients between them. When pressed about
> these issues, every single vendor will reply with the same answer:
> Yeah, it's an issue, but you can use adaptive sync. When pressed more:
> Yeah, we know. Use GP$.
>
> Unfortunately, working for Vodafone (Iceland), I know this all too well :-)
>
> On Tue, Apr 14, 2009 at 09:54, Radioactive Frog <pbhatkoti_at_gmail.com>
> wrote:
> > hehe...Good point...
> > For that there is another technology called "Psudowire", that has better
> > clock than normal TDMoIP products. This psudowire is specially designed
> for
> > ATM/IMA over Ethernet. These product even can keep BTS/BSC sync over a
> > business grade DSL/(ADSL2+).
> >
> > Totally new market.
> >
> > Cheers
> > -frog
> >
> >
> >
> > On Tue, Apr 14, 2009 at 7:23 PM, Marko Milivojevic <markom_at_markom.info>
> > wrote:
> >>
> >> On Tue, Apr 14, 2009 at 03:26, Radioactive Frog <pbhatkoti_at_gmail.com>
> >> wrote:
> >> > TDMoIP is not bad. All it needs is a good QoS and fat pippe :)
> >>
> >> It's not bad at all for POTS backhaul and similar applications. For
> >> mobile backhaul, it's not at all good, as it requires extra ffort to
> >> support things like cell handover. Especially if your BTS' don't
> >> support adaptive clock sync.

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Received on Tue Apr 14 2009 - 23:10:31 ART