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From: mitel!Software!grayt@uunet.uu.net (Tom Gray)
Newsgroups: comp.dcom.telecom
Subject: Re: Pulse-Mode Frequencies?
Message-ID: <15851@accuvax.nwu.edu>
Date: 7 Jan 91 17:17:06 GMT
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X-Telecom-Digest: Volume 11, Issue 13, Message 6 of 12


In article <15841@accuvax.nwu.edu> tholome@portia.stanford.edu (Eric
THOLOME) writes:

>Can anyone tell me the frequencies used by pulse-mode phones when
>dialing?

The pulse frequency is nominally 10pps (in North America).  Most
switches will accomodate frequencies from 7 to 12pps.  The nominal
make/break ration is 60/40. Most swtches will accomodate make breaks
from 80/20 to 20/80.

Outside of North America the nominal pulse rates vary from country to
country but is most commonly 10pps with a 66/34 make/break.