TY  - BOOK
AU  - Bellamy, John C.
TI  - Digital Telephony
SN  - 9788126509294
U1  - 621.385 22
PY  - 2000/// [Reprint 2017]
CY  - New Delhi
PB  - Wiley
KW  - Digital telephone systems
N1  - Includes index
ER  -