Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!accuvax.nwu.edu!nucsrl!telecom-request
From: Carl Moore (VLD/VMB) <cmoore@brl.mil>
Newsgroups: comp.dcom.telecom
Subject: Being Called From Inside or Outside Centrex
Message-ID: <10729@accuvax.nwu.edu>
Date: 10 Aug 90 15:57:59 GMT
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Organization: TELECOM Digest
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X-Telecom-Digest: Volume 10, Issue 561, Message 8 of 10


If you are on a "Centrex" type phone setup (i.e., dial less than seven
digits for calls within it, and 9 at the start of a call to outside),
you might have a different ringing pattern for calls from within as
opposed to calls from outside.  In my office, it's like this: calls
from within -- regular ringing pattern calls; from outside -- two
quick rings, silence (pattern keeps repeating).


[Moderator's Note: We also have this same thing on Starline, a/k/a
Intellidial Service. The ringing cadence identifies the source of the
call. Front door intercom service uses this as well.  PT]