TY  - GEN
AU  - Hobbs,Marvin
TI  - Modern communications switching systems
SN  - 0830612785 (pbk.) :
U1  - 621.382 
PY  - 1981///
CY  - Blue Ridge Summit, Pa.
PB  - Tab Books
KW  - Telecommunications engineering
N1  - Includes index; The Slow Push for Progress (Page-7) Basic Switching and Traffic Concepts (Page-19) Logic Switching Algebra and Control (Page-39) Circuit Switches and Relays for Speech (Page-56) Control and Signal Methods (Page-78) Modern Step-by-Step and Rotary Exchanges (Page-104) Electromechanical Crossbar Systems (Page-128) Electronic Exchanges with Wired Logic (Page-142) The Elements of Stored Program Control (Page-162) Typical SPC Exchange Switching Systems (Page-199) Data and Telex Switching (Page-215) Automatic Private Branch Exchanges (Page-229).
ER  -