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From: thurston%mrc-applied-psychology.cambridge.ac.uk@nsfnet-relay.ac.uk
Newsgroups: comp.dcom.telecom
Subject: Re: Something New With Cordless Phones
Message-ID: <6278@accuvax.nwu.edu>
Date: 11 Apr 90 09:33:09 GMT
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X-Telecom-Digest: Volume 10, Issue 247, Message 14 of 14


Steck Thomas writes:

>With the costs of digital technology plunging, and availability of
>digital components increasing, why hasn't someone put a sampler the
>handset, converted the signal into a digital stream (with error
>correction..) and send that to the base, which could then convert the
>digital stream to an analogg signal.

The proposed system exists and is sold in Britain under the umbrella
name 'telepoint'. The handsets may be used at railway stations etc, in
the vicinity of specially placed basestations ... the call is billed
to you and is generally quite cheaper than using a cellphone. If you
buy a home basestation you may use it as an ordinary cordless. Up to
six handsets may be used with one basestation, you may call between
handsets too like a mobile intercom.

Signaling is time division multiplex digital, so no interchannel
interference. Cost of a handset, about 150GBP; the base station is
another 150GBP. If you use the handset in mobile mode, you need to
subscribe with one of the four telepoint operators.


Peter Thurston