In 1986 there was a visit to the Stoke Fleming telephone exchange for the Doomsday Reloaded project. This is probably the old telephone exchange in Mill Road, which is now a cold store for a fish merchant.
Just outside Stoke Fleming is a
large building looking like a stone
walled bungalow.Actually it is the
telephone exchange. It has been built
to blend in with its beautiful area.
It is very big because it is not
just the village's phone lines which
go there. From Blackpool Sands a cable
goes under the sea to the Channel
Islands. It can carry 500 telephone
calls at once.
In our visit to the Exchange we saw
where it joins the national phone
system. In the exchange they have
their own enormous generators to keep
the phones working if there is a cut
in the electricity supply.
The exchange is automatic and we
watched the numbers being dialled.
From the TyCom cable landing stations at Pottington and Highbridge, the land segment of the cable travels through Wiltshire, Berkshire and Buckinghamshire to Stratford in London.
From here it travels through Herefordshire, Bedfordshire and Northamptonshire, and then through Leicestershire, Nottinghamshire and then in to Yorkshire, terminating at Hunnamby.
Along the way, the signal requires regeneration every 73km approximately (with a tolerance of approximately +/-3500m) and so building to house the repeater equipment is necessary.
The photos here are of one example site.
BT announces 20 new fibre optic submarine cables.
Largs – Millport
Kilchattan Bay – Millport
Rothesay – Toward
Kilfinan – Lochgilphead
Campbeltown – Shiskine
Corrie – W. Kilbride
Jura – Port Askaig
Glenbarr – Port Ellen
Jura – Ormsary
Kilchoan – Tobermory
Craignure – Oban
Ardgour – Onich
Stornoway – Ullapool
Lochmaddy – Leverburgh
Carnan – Dunvegan
Ardvasar – Mallaig
Dervaig – Scarinish
Lochboisdale – Eriskay
Eriskay – North Bay
Evie – Westray
In the document, International Facilities Access (IFA) (CARRIER PRICE LIST Section B5 PART 5.02) there is a table of BT cable stations on pp.7 Here
This gives some confirmation of the cable termination points which were previously unconfirmed.
Procol Ltd claim to have replaced a heath exchanger at one of the Bude cable landing station (here: http://www.procol.co.uk/casestudies.asp?CSID=17).
Not sure of the exact location of the CLS.