VOLUME II

Manual Switchboards By K. B. Miller and S. G. McMeen[A] Page[B] 11

[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

[A] For professional standing of authors, see list of Authors and Collaborators at front of volume.

[B] For page numbers, see foot of pages.