TY  - BOOK
AU  - Bellamy, John C.
TI  - Digital telephony
SN  - 9814126357
U1  - 621.385 BEL 
PY  - 2000///
CY  - New York 
PB  - : Wiley, 
KW  - Digital telephone systems
KW  - Digital
KW  - Bellamy, John C
KW  - Electrical Engineering
ER  -