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From: sweedler@yale.UUCP (Jonathan Sweedler)
Newsgroups: comp.dcom.telecom
Subject: Phone system basics
Message-ID: <2882@yale-celed.yale.UUCP>
Date: Tue, 5-May-87 20:31:53 EDT
Article-I.D.: yale-cel.2882
Posted: Tue May  5 20:31:53 1987
Date-Received: Sat, 9-May-87 10:06:11 EDT
Sender: daemon@ucbvax.BERKELEY.EDU
Reply-To: harvard!harvisr!yale-celed!sweedler@seismo.CSS.GOV (Jonathan Sweedler)
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Organization: Yale University Computer Science Dept, New Haven CT
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Approved: telecom@xx.lcs.mit.edu


Is there a good tutorial that explains the basics of the phone system.
I'm lost when people talk about DDD access trunks, SF tone detectors,
CCIS, ESS, and the like.  Thanks in advance.
-- 
UUCP:  ...!{seismo,decvax}!yale!sweedler  
ARPA:  sweedler@yale.arpa                          Jonathan Sweedler
BITNET: sweedler@yalecs.bitnet