TY  - BOOK
AU  - SHARMA, K.K.
TI  - Fundamentals of Voice and Data Communication 
SN  - 9789350143339
AV  - TK5105.S53 
PY  - 2012///
CY  - New Delhi 
PB  - Katson Books 
KW  - Telecommunication
KW  - Data Transmission System
ER  -