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From: dave@westmark.westmark.com (Dave Levenson)
Newsgroups: comp.dcom.telecom
Subject: Re: Unbreakable Dialtone
Message-ID: <16313@accuvax.nwu.edu>
Date: 23 Jan 91 03:00:27 GMT
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X-Telecom-Digest: Volume 11, Issue 58, Message 4 of 13


In article <16253@accuvax.nwu.edu>, SINGER@ibm.com (David Singer) writes:

> Once in a while (maybe one call out of ten), pressing the keypad on my
> phone (or sending DTMF from my modem) won't break the dialtone.  If I
> hang up and retry, it will almost always work.  This happens on both
> my lines, using various instruments.

Perhaps your central office has one or two bad touch-tone receivers.
When I lived in Summit, NJ, we had an old 5-crossbar central office
until about 1980 or so (201-273, but now it's 908-273).  We had
touchtone service, bought and paid for, on both lines, but on about
one call in 30 or so we'd get a dial tone which did not react to tone
dialing.  When I reported this to 611 repair service, they told me it
was my instrument.  When I mentioned it to a NJ Bell craftsperson
familiar with the Summit CO, he remarked that there were 29
originating registers in the office ... and that usually one or more
were out for maintenance.  He thought that perhaps the
class-of-service register within one of those registers had a dirty
relay contact or something, which caused it to fail to latch up the
fact that we had touchtone service.  


Dave Levenson		Internet: dave@westmark.com 
Westmark, Inc.		UUCP: {uunet | rutgers | att}!westmark!dave
Warren, NJ, USA		AT&T Mail: !westmark!dave
Voice: 908 647 0900 	Fax: 908 647 6857