Path: utzoo!attcan!uunet!lll-winken!netsys!vector!telecom-gateway
From: ms6b+@andrew.cmu.edu (Marvin Sirbu)
Newsgroups: comp.dcom.telecom
Subject: Framing within an ISDN B channel
Message-ID: <telecom-v09i0161m02@vector.dallas.tx.us>
Date: 11 May 89 14:24:52 GMT
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X-TELECOM-Digest: volume 9, issue 161, message 2 of 10

I believe that the reasons for requiring HDLC framing within an ISDN
B channel is that, because of clock differences in the network, it is possible
that an 8-bit byte may get dropped somewhere along the way.  This makes
little difference in a voice conversation, but messes up data.  SDLC framing
with a frame check sequence allows you to detect the error.

Marvin Sirbu