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.
The TAT-9 cable entered service in 1992 and was retired in 2004.
It is understood that at least a section of the cable near the coast has been recovered from the seabed to reduce the hazard to vessels which fish the area. It is not known what length was recovered. Further information
Modern maps have not been found which show the route of the cable, but a mariners chart dated 2003 (prior to the decommissioning) shows the landing point on the south side of Poldhu beach near Mullion in Cornwall.
The map below is further confirmation of the TAT-9 landing point (taken from this document).
Information on the internet generally confirms that the cable landing station for TAT-9 was Goonhilly.
There is interest in the reuse of the remaining portions of the TAT-9 cable for ocean monitoring. Further information and significant technical details of the cable and its repeaters can be found in this review pdf.