50th Anniversary of STD (Subscriber Trunk Dialling)

[nik's note: source BBC]

It is 50 years since the first long-distance telephone call was made in the UK without the help of an operator.
The 1958 call was made by the Queen to the Lord Provost of Edinburgh from the central telephone exchange in Bristol.She started her call by saying: "This is the Queen speaking from Bristol. Good afternoon, my Lord Provost."
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