TY  - BOOK
AU  - Photocopy
TI  - Topic digital telephony
SN  - (pbk)
U1  - 621.385 
PY  - 2001///
CY  - Islamabad
PB  - Riphah International University
KW  - Electrical engineering
KW  - Telephony digital
KW  - analog digital conversion
KW  - Digital transmission
KW  - Digital switching
KW  - Control memory
KW  - Digital network
KW  - FEAS
ER  -