Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!tut.cis.ohio-state.edu!brutus.cs.uiuc.edu!wuarchive!texbell!vector!telecom-gateway
From: userDBUG@ualtamts.BITNET (Dan Berry)
Newsgroups: comp.dcom.telecom
Subject: Call Progress Signals Needed
Message-ID: 
Date: 13 Aug 89 00:14:22 GMT
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X-TELECOM-Digest: volume 9, issue 294, message 2 of 10

I was interested in finding out the tone plans for the typical phone
system's call progress signals, but I can't seem to be able to find
them in any of my books!  You know, the frequencies for a dial tone,
busy signal, ringing and the rest of them.  From someone else that
I've talked to, they made mention that only some four frequencies
were used to get some 20+ signals.  dB's and timing too, S.V.P.

Would anyone out there happen to be able to help me, please?  It's
for a practical joke I want to play on a friend.  If you could just
Email me the listings, then I could compile them and summarize if
anyone else would like...

+-----------------------------------+  DAN BERRY
!  "Violence is the last            !  University of Alberta
!       refuge of an incompetent."  !  Computing Systems
+-----------------------------------+  (Network and DataCom)