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From: esupg@cu.warwick.ac.uk (barj)
Newsgroups: comp.dcom.telecom
Subject: UK Caller Identification
Message-ID: <16406@accuvax.nwu.edu>
Date: 24 Jan 91 17:58:29 GMT
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Recently, I have seen some equipment for sale in the UK that displays
the caller's telephone number before you answer the phone. How is this
done? I think I read in this group a little while ago that in the US,
the caller's phone number comes down the line (in DTMF) between rings.
Is this true? Is a similar system used here?  Is it automatic or (more
likely) do you have to pay BT (or Mercury) lots of money to get it?
Any information - please email or post.

Sorry if this is a FAQ, but I haven't seen it here.

Thanks in advance.


esupg@uk.ac.warwick.cu
Andrew     University of Warwick, Coventry, UK.
Bargery    154 Brunswick St, Leamington, CV31 2ER, UK.
           vox : +44 926 881264


[Moderator's Note: Where Caller*ID is available here, it is
transmitted between the first and second ring. If you were monitoring
or tapping the line when a call arrived, you would hear the data as it
arrived on your end. I do not know precisely what system you have
there, but I know enough about British Telecom to know they don't send
it to you for free. :)   PAT]