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From: hrs@batavier.att.com (Herman R Silbiger)
Newsgroups: comp.dcom.telecom
Subject: Re: Slick 96?
Message-ID: <2159@accuvax.nwu.edu>
Date: 15 Dec 89 01:30:19 GMT
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X-Telecom-Digest: Volume 9, Issue 573, message 4 of 10


A predecessor to Subscriber Loop Carrier systems was Subscriber Loop
Multiplex (SLM).  The SLM-40 provided 40 channels, and used Delta
Modulation coding.  As far as I know, this was the only use of delta
modulation in the US telephone network.


Herman Silbiger