TY  - BOOK
AU  - Talley,David
TI  - Basic telephone switching systems
U1  - 621.3877 
PY  - 1980///
CY  - Bombay
PB  - D.B. Taraporevala
KW  - Telephone switching systems, electronic
KW  - Telephone systems
KW  - Telephone
KW  - Signalling
KW  - Telephone, Dial
N1  - Includes index
ER  -