Inter-CO signaling?

Thu Sep 10 20:37:09 UTC 1998

	someone here in our office was saying you can extract this out
of the modem after and during the call.  Consult your modem manual
for specific directions, but I think they said it was at&v1

	- jared

On Thu, Sep 10, 1998 at 03:09:45PM -0400, Robert E. Seastrom wrote:
> 
> RBS is often run on B8ZS/ESF too.
> 
> The reason it is not commonly run on inter-office trunks is because of
> a remarkable new innovation called SS7.  Perhaps you have heard of it.
> 
> Anyway, since the bits in robbed-bit signaling are "robbed" from the
> superframe not from your DS0, it is irrelevant to your throughput.
> 
>    From: Chad Skidmore <cskidmor at nwnexus.net>
>
>    RBS is often times run on on AMI D4 circuits.  Also, RBS is generally
>    not run on inter-office trunks.
> 
>    At least that was the case a few months ago when I worked on a DMS-500.
> 
>    > From: Robert E. Seastrom [mailto:rs at bifrost.seastrom.com]
>    > of course, robbed bit signalling and AMI have nothing to do 
>    > with one another...
>    > 
>    > 
>    >    From: Chad Skidmore <cskidmor at nwnexus.net>
>    > 
>    >    Try making an ISDN call from one to the other at a 64k 
>    > rate.  If you can
>    >    get through then there are at least some trunks setup as 
>    > ESF B8ZS clear
>    >    channel.  I suspect that they are probably some older 
>    > trunks running AMI
>    >    D4.
>    > 
>    >    > From: Dan Hollis [mailto:goemon at sasami.anime.net]
>    >    > 
>    >    > 
>    >    > Is there any way to determine if inter-telco links are using 
>    >    > robbed bit
>    >    > signaling? Eg from GTE to USwest in the Seattle area.
>    >    > 
>    >    > I suspect RBS may be causing lots of v.90 problems in 
>    > GTE country in
>    >    > Seattle. But id like to know how to confirm this. And just 
>    >    > maybe, get it
>    >    > fixed.

-- 
Jared Mauch  | pgp key available via finger from jared at puck.nether.net
             | http://puck.nether.net/~jared/