HC Deb 20 March 1968 vol 761 c108W
75. Sir T. Beamish

asked the Postmaster-General what is the maximum period that can elapse after a subscriber has replaced the telephone at the end of a call, if the operator has not disconnected the clock, before the clock recording the length of the call cannot automatically restart when the receiver is lifted again; and if he will modify the clock so that subscribers cannot be overcharged through a technical or human fault.

Mr. Joseph Slater

On average, operators disconnect within 10 seconds, and modifications are not, therefore, justified. I am writing to the hon. and gallant Gentleman to explain the details.

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