Telephony - Volume 1 - General Principles and Manual Exchange Systems AND Volume 2 - Automatic Exchange Systems

Sir Isaac Pitman and Sons, 1966

A detailed exposition of the telephone exchange systems of the British Post Office. Universally regarded as the standard work on the subject, this book, originally written by T.E. Herbert and W.S. Procter was completely revised and brought up to date with modern practice in this 1966 edition. The two volumes includ photographs, detailed drawings, circuit diagrams, traffic capacity tables and indexes...