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From: hayes!tnixon@uunet.uu.net (Toby Nixon)
Newsgroups: comp.dcom.telecom
Subject: Re: Turning Off Call Waiting Remotely
Message-ID: <14002@accuvax.nwu.edu>
Date: 24 Oct 90 01:25:03 GMT
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X-Telecom-Digest: Volume 10, Issue 761, Message 5 of 10


In article <13889@accuvax.nwu.edu>, vances@xenitec.on.ca (Vance
Shipley) writes: 

> You as the caller couldn't and shouldn't be able too.  But that gives
> rise to the question: can you turn call waiting off on an existing
> call?

> I just tried it: I flashed and dialed *70 got the three beeps and was
> cut through to the existing call.  So if you had some control over

It is a fairly well-known and well-documented feature that if you have
BOTH Three-Way Calling and Call-Waiting that you can disable Call
Waiting by doing a hook-flash, *70.

Several people (e.g., those who run a BBS part-time on their voice
line) have ask me over the years how they can selectively disable call
waiting on INCOMING calls.  It's pretty easy.  You need Three-Way
Calling, and take advantage of the feature mentioned above.  Rather
than having the modem auto-answer (S0 > 0), you need to have
computer-controlled answering (look for RING messages).  AND, rather
than answering with the "ATA" command, you answer with a dial string
that looks like this: "ATH1DT,!,*70,;A"; you might need another "!"
before the ";" to make it work on your switch.  The "H1" takes you
off-hook, so that the "D" command doesn't wait for dial tone or the
normal two-second delay.  It works faster if you set your "Pause Time
for Comma" to 1 second instead of 2.

Just a bit of interesting trivia.


Toby Nixon, Principal Engineer    | Voice   +1-404-449-8791  Telex 151243420
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