This has to do w/line coding on channelized T1s and the overhead to keep
track of channelized info. If the other end isn't using Clear 64, and is
using AMI(a line encoding scheme from telco)then 8 Kbps is used to
synchronize between the two ends.

Chris

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
John Neiberger
Sent: Wednesday, July 05, 2000 4:14 PM
To: [EMAIL PROTECTED]
Subject: 56k ISDN??


I noticed on CCO that when configuring ISDN it suggests settings the speed
to 56k for calls outside of the local exchange.  What types of situations
are they actually referring to, and why would we use 56k instead of 64k?

Another dumb question:  how do we know if a called number is in our local
exchange or not?  Would this be something I'd have to verify with my local
provider?

TIA for any help, I'm pretty new to the wonderful world of ISDN.

John





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