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The first digital telephone exchange

The UXD5 exchange at Glenkindie (Scotland) was the first Digital telephone exchange in the UK. It was opened for public service 17th September 1979 – And is still working fine (albeit several updates have taken place over the years).

Plaque on the UXD5 exchange at Glenkindie (Scotland)
Picture location: Outside of the exchange building
Date: 19-Sep-1979
Sent by: Barry Saltmarsh
Category: Communication systems
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