VOLUME II
Reading edition
CHAPTER XXII—Common-Battery Switchboards—Line Signals—Cord Circuit—Lamps—Mechanical Signals—Relays—Jacks—Switchboard Assembly
CHAPTER XXIII—Transfer Switchboard—Transfer Lines—Handling Transfers
CHAPTER XXIV—Multiple Switchboard—Busy Test—Influence of Traffic
CHAPTER XXV—Magneto-Multiple Switchboard—Multiple Boards: Series, Branch-Terminal, Modern Magneto, Common-Battery
CHAPTER XXVI—Western Electric No. 1 Relay Board—Western Electric No. 10 Board—Types of Multiple Boards—Apparatus
CHAPTER XXVII—Trunking—Western Electric and Kellogg Trunk Circuits
Automatic Systems By K. B. Miller and S. G. McMeen Page 135
CHAPTER XXVIII—Automatic vs. Manual—Operation
CHAPTER XXIX—Selecting Switch—Line Switch—Trunking Systems—Two- and Three-Wire Systems—Subscriber's Station Apparatus—First and Second Selector Operation—Connector—Release after Conversation—Multi-Office System—Automatic Sub-Offices—Rotary Connector—Party Lines—Two-Wire Automatic System
CHAPTER XXX—Lorimer System—Central-Office Apparatus—Operation
CHAPTER XXXI—Automanual System—Operation—Subscriber's Apparatus—Operator's Equipment—Switching Equipment—Distribution of Calls—Connection—Speed
Power Plants and Buildings By K. B. Miller and S. G. McMeen Page 227
CHAPTER XXXII—Currents Employed—Types—Operator's Transmitter Supply—Ringing-Current Supply—Auxiliary Signaling Current—Primary Sources—Duplicate Apparatus—Storage Batteries—Power Switchboards—Circuits
CHAPTER XXXIII—Central-Office Building—Arrangement of Apparatus—Manual Offices—Automatic Offices
Special Service Features By K. B. Miller and S. G. McMeen Page 271
CHAPTER XXXIV—Private-Branch Exchanges—Switchboards—Supervision—With Automatic Offices—Battery Supply—Ringing Current
CHAPTER XXXV—Inter-Communicating Systems—Magneto System—Common-Battery Systems—Types
CHAPTER XXXVI—Long-Distance Switching—Operator's Orders—Trunking—Way Stations
CHAPTER XXXVII—Traffic
CHAPTER XXXVIII—Measured Service—Charging—Rates—Toll Service—Local Service
Telegraph and Railway Work By K. B. Miller and S. G. McMeen Page 321
CHAPTER XXXIX—Phantom, Simplex, and Composite Circuits—Ringing—Railway Composite
CHAPTER XL—Telephone Train Dispatching—Railroad Conditions—Transmitting Orders—Apparatus—Telephone Equipment—Types of Circuits—Test Boards—Blocking Sets—Dispatching on Electric Railways
Review Questions Page 359
Index Page 373