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. --------------------------------------------- Chad Skidmore Director of Network Engineering Northwest Nexus, Inc. http://www.nwnexus.com 1-888-NWNEXUS
-----Original Message----- From: Robert E. Seastrom [mailto:rs@bifrost.seastrom.com] Sent: Thursday, September 10, 1998 11:08 AM To: cskidmor@nwnexus.net Cc: goemon@sasami.anime.net Subject: Re: Inter-CO signaling?
of course, robbed bit signalling and AMI have nothing to do with one another...
From: Chad Skidmore <cskidmor@nwnexus.net> Cc: "'nanog@merit.edu'" <nanog@merit.edu> Date: Thu, 10 Sep 1998 10:47:04 -0700 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.1960.3) Content-Type: text/plain Sender: owner-nanog@merit.edu
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.
The other thing you could do is just ask them.
--------------------------------------------- Chad Skidmore Director of Network Engineering Northwest Nexus, Inc. http://www.nwnexus.com 1-888-NWNEXUS
-----Original Message----- From: Dan Hollis [mailto:goemon@sasami.anime.net] Sent: Wednesday, September 09, 1998 5:22 PM To: 'nanog@merit.edu' Subject: Inter-CO signaling?
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.
-Dan