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From: rce10845@uxa.cso.uiuc.edu (Robert C Elliott)
Newsgroups: comp.dcom.telecom
Subject: Re: Wrong Numbers With Nobody Talking
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Date: 22 Sep 89 23:21:25 GMT
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Reply-To: rce10845@uxa.cso.uiuc.edu (Robert C Elliott)
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X-TELECOM-Digest: volume 9, issue 397, message 4 of 7

That is probably a modem calling you.  The clicking sound is from the modem
trying to determine if the phone is ringing, voice answer, or another
modem.

Only an answering modem puts out a tone right away; the originating
modem responds only when it hears that tone.  That's why you don't hear
any modem tones.

Rob Elliott: rce10845@uxa.cso.uiuc.edu (summer: rob@embossed.com)