[net.general] querry: desirable phone features.

4364jo@hou2b.UUCP (08/27/83)

Technically, this is feasible but because of the expense has never
been implimented in the telephone system.  The  gadget you propose
on your tel set will only work if the calling number is sent forward.
In many older electromechanical systems this number is usually chewed
up at the CAMA office where charging takes place and it is not pulsed
forward.  However with the new electronic and digital systems especially
with CCIS and its forms where signalling is over a separate channel it is
much easier and less expensive and I believe very practical to send
the calling number to a PBX or perhaps you.  Hang in there!  It is on
the way!

                                    J. Orost

paulp@tekcad.UUCP (08/29/83)

#R:hou2b:-9700:tekcad:1800007:000:1191
tekcad!paulp    Aug 28 23:18:00 1983

Actually the idea of sending the calling number as part of the ring
signal (or whatever) to a phone suggests a devious idea:

Bugging a phone could be done much more efficiently.  Even with
voice operated switches, there's a lot of boring material between
the 'useful' portions of a tapped conversation.  If the material
is taped, essential if the operation is a one man show, the
cassette may be exhausted before recording anything of interest.
This is guaranteed to happen in a house with one or more teenagers.
Using a box to recognize a list of numbers of interest could be
a useful filter.

The Soviets do much the same listening to telephone conversations
that go over micro-wave links in places like Washington, San Francisco,
etc.  Over uwave, both the called and calling number are in the header
that precedes the call.  The equipment to select groups and individual
numbers can be built or bought for a reasonable amount of money.

				    Paul Pomes

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