nanog mailing list archives

RE: Inter-CO signaling?


From: Chad Skidmore <cskidmor () nwnexus net>
Date: Thu, 10 Sep 1998 11:10:31 -0700

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
   > 




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