HC Deb 12 May 1965 vol 712 c64W
46. Mr. Awdry

asked the Postmaster-General by what criteria he determines the longest acceptable time for a subscriber to wait before he can obtain an answer from the exchange in order to put through a trunk call.

Mr. Joseph Slater

We aim to answer all calls to the operators with minimum delay and, in normal conditions, most are answered within 10 seconds.