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From: SINGER@ibm.com (David Singer)
Newsgroups: comp.dcom.telecom
Subject: Re: Unbreakable Dialtone
Message-ID: <16356@accuvax.nwu.edu>
Date: 23 Jan 91 02:46:12 GMT
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X-Telecom-Digest: Volume 11, Issue 61, Message 5 of 10


In article <16311@accuvax.nwu.edu> pallas!kabra437@uunet.uu.net (Ken
Abrams) writes:

>You provide a fairly complete picture of the symptoms.  It is HIGHLY
>likely that GTE has a defective DTMF receiver in your CO.  They are
>probably getting a few other similar complaints but haven't seen a
>pattern yet.  I would suggest that they have a reversed link in the
>switch but most modems don't depend on the line polarity to make the
>tones.  This kind of a problem is difficult to find but not
>impossible.  It takes a little time for them to test all the receivers
>but usually takes longer to convince them that they need to do it!

>All of the above only applies if your CO is of the analog variety.  If
>it is a digital switch, all bets are off.

I just called GTE and they confirmed that I'm on a digital CO (GTD-5).
(I'm actually impressed -- the Business Office got me that information
without asking why I needed to know!)

I should have mentioned in my first posting that my equipment always
generates tones when I push the buttons (or ask the modem to dial),
and that they sound good to my ears.  


David Singer -- Internet: singer@ibm.com   BITNET: SINGER at ALMADEN
                Voice: (408) 927-2509      Fax: (408) 927-4073
(amusing disclaimer du jour goes here)