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From: vances@xenitec.on.ca (Vance Shipley)
Newsgroups: comp.dcom.telecom
Subject: Re: Unitel (Canada) Fax Service
Message-ID: <68912@bu.edu.bu.edu>
Date: 16 Nov 90 18:35:07 GMT
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X-Telecom-Digest: Volume 10, Issue 828, Message 6 of 7


In article <14718@accuvax.nwu.edu> gauthier@ug.cs.dal.ca (Paul
Gauthier) writes:

>  I called MT&T and asked what would happen if a voice call was
>placed on such a line. They assured me it would be very quickly
>disconnected. The person I spoke to also claimed that MT&T was
>'listening' to the call and was actually sensing fax protocol and thus
>deciding whether the call should be allowed to continue or not.

>  Does anyone know if such services actually detect and interpret fax
>protocol to decide whether to axe the call? The idea that first struck
>me was using this service to get cheap rates for long distance modem
>calls.  If all the hardware is listening for is something that
>resembles a data call (carrier) then perhaps a modem would fool it.
>Any thought?

I believe you'll have to go with Unitel's Facsroute service to use
modems.  It seems that Telecom Canada (the real provider of Faxcom)
does look for fax protocol.  Unitel does not, they only check for
"carrier".

If this is very confusing for our american listeners let me elaborate.
Here in Canada we have not deregulated long distance telephone
service.  The only carrier for public switched voice service is
Telecom Canada (Bell Canada, and they rest of the phone companies).
Data is a different story though and there is competition.  Unitel
(formerly CNCP) is the main alternative.

The question here regards the methods used by both carriers to ensure
that their fax services (deemed as data by Unitel) carry no voice
calls.


Vance Shipley
vances@ltg