Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!usc!apple!bionet!hayes.ims.alaska.edu!accuvax.nwu.edu!nucsrl!telecom-request
From: inesc!jmc%eniac@relay.eu.net (Miguel Casteleiro)
Newsgroups: comp.dcom.telecom
Subject: Re: Distinctive Ringing Fax/Phone Switch
Message-ID: <14425@accuvax.nwu.edu>
Date: 6 Nov 90 21:00:52 GMT
Sender: news@accuvax.nwu.edu
Organization: INESC - Inst. Eng. Sistemas e Computadores, LISBOA. PORTUGAL.
Lines: 29
Approved: Telecom@eecs.nwu.edu
X-Submissions-To: telecom@eecs.nwu.edu
X-Administrivia-To: telecom-request@eecs.nwu.edu
X-Telecom-Digest: Volume 10, Issue 795, Message 13 of 13


In article <14293@accuvax.nwu.edu>, dhesi%cirrusl@oliveb.atc.olivetti.com (Rahul Dhesi) writes:

> In <14098@accuvax.nwu.edu> tim@ggumby.cs.caltech.edu (Timothy L. Kay)
> writes:

> >It would be useful to have a fax switch that could decide, based on
> >the ring, whether to engage the fax machine, data modem, or answering
> >machine.

> I recently purchased a fax/phone/modem switch that claims to do just
> that.  [...]  It is supposed to be able
> to select one of two devices based on distinctive ringing.  

Can someone please explain how do this devices work?  Do they answer
to the phone line, and then decide based on the tones what type of
call is it?  And then, do they simulate the calling tone to the fax
and the modem?  If so, aren't this tones diferent from country to
country?

In short, suppose that I have a dumb fax and a dumb modem, can I
interface one of this devices between one phone line and them?

Thanks for any help.

                          
Miguel Casteleiro at     
INESC, Lisboa, Portugal. 
UUCP: ...!mcsun!inesc!jmc