Hopefully they don't, but they used to use it all over the place, which is
why it still exists in certain areas.
- Don
-----Original Message-----
From: John Neiberger [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, July 05, 2000 1:58 PM
To: [EMAIL PROTECTED]
Subject: RE: 56k ISDN??
So, do ISDN calls between exchanges use AMI, hence their suggestion to use
56k for inter-exchange calls?
> 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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