email Crypto- third party

[Duncan Campbell]

Fax receivers and transmitters co-operate just as modems do over fast links 
(V34, V56, V90), which means that an unintended recipient of a fax cannot 
simply use normal receiving hardware and software, but has to interpret the 
two way exchange between the terminals, from the intermediate 
position.  The buzzword for this is "blind demodulation".

Duncan

At 02/08/99 19:50 , you wrote:
>In article <37A591C6.2F4BB7E0@algroup.co.uk>, Ben Laurie
><ben@algroup.co.uk> writes
> >Richard Clayton wrote:
> >> it is possible to intercept fax calls, but it would take a fairly
> >> skilled operation to do it. Compared with email, there are significant
> >> technical hurdles to jump (or am I just showing my familiarity with some
> >> technologies and ignorance of others ?)
> >
> >I don't see why it would be any harder than ordinary phone interception.
>
>
>  Is it enough that an adequate second receiving fax have its receive
>  side connected to the intercept (and its transmit side connected to
>  nothing) in order for it to print the document?  or is would we
>  need slightly more sophisticated equipment??
>
>
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