Discussion on “automatic switchboard telephone system of Los Angeles,” (Campbell), San Francisco, Cal., Sept. 17, 1915. (see proceedings for August, 1915)

Leo Keller: After I read Mr. Campbell's paper I decided it might be of general interest to say a little of the details of some of the cut-over work which was necessary, due to the fact that the original plant as laid out by the engineers was altogether knocked out by the tremendous growth and spread of the city of Los Angeles, growth in population and also in area. However, one feature of these changes, namely, the final cut-over, deserves a more detailed description, especially as the management of the Home Telephone & Telegraph Co. was very much opposed to any changing of subscribers' telephone numbers. This cut-over was, therefore, laid out with a view to letting each subscriber retain his old number and is more fully described below.