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Article #1254

Re: Internal Modem Problem - NO DIALTONE (analogue problem?)

#1254
From: Mike Tomlinson
Date: Wed, 12 Nov 1997 00:00
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In article <879275102snz@inf-eden.demon.co.uk>, Chris Kennington
<News@inf-eden.demon.co.uk> writes

>  The
> basic rule seems to be "most phones will work on a UK sysytem,
> but UK phones will not work on anyone else's".  

I'm not certain, but I think because of the length of time it took to
bring the UK phone system up to scratch (ie convert it from click'n'bang
to digital), it's been necessary for BT exchanges to be fairly tolerant
of the variations in dialling tones and make/break pulses produced by
the huge range of phones used.  I had one of the early BT push-button
phones which used an internal battery to drive the line relay.   When
the battery went and the buttons no longer worked, I became quite adept
at dialling numbers using the cutoff buttons.

-- 
Mike Tomlinson
On holiday in Madeira Beach, Florida.  Avg temp 75degF
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From: Mike Tomlinson <jasper@nospam.demon.co.uk>
Subject: Re: Internal Modem Problem - NO DIALTONE (analogue problem?)
Date: 1997/11/12
Message-ID: <aKmSugBOKia0EwaR@jasper.demon.co.uk>
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References: <876818758snz@longley.demon.co.uk> <k1CthpAQm9Z0Ew3w@jasper.demon.co.uk> <879275102snz@inf-eden.demon.co.uk>
Reply-To: Mike Tomlinson <mdt@earthling.net>
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