TY - GEN AU - Atkinson, J. TI - Telephony vol. I U1 - 621.385 PY - 1961/// CY - London PB - Sir Isaac Pitman KW - Telephony N1 - Sound and Speech (Page-1) Symbols and Diagrams (Page-20) Transmitters and Receivers (Page-32) Resistors Condensers and Transformers (Page-45) The Transmission Elements of Telephone Circuits (Page-64) The Principles of Relay Design (Page-88) Relays Indicators and Similar Apparatus (Page-108) The Principles of Line Signalling (Page-127) Subscribers Apparatus (Page-152) The Principles of Manual Switching (Page-181) Private Manual Branch Exchanges (Page-200) The Circulation of Public Traffic (Page-232) The Principles of Junction and Trunk Signalling (Page-252) Cabling Wiring and Protection (Page-280) Magneto and C.B.S. Exchanges (Page-305) The Central Battery System Local Calls and Exchange Design (Page-325) The Central Battery System Junction Working (Page-340) The Sleeve Control System (Page-366) Automanual and Trunk Exchanges (Page-385) Power Plant (Page-406) Maintenance and Fault Testing (Page-451) ER -