TY  - BOOK
AU  - Hersent, Olivier ; Gurle,  David  & Petit, Jean-Pierre
TI  - IP telephony: packet-based multimedia communications system
SN  - 81-7808-258-6
U1  - 384.6 Her 
PY  - 2000///
CY  - Pearson Education Asia, New Delhi
KW  - ENGINEERING
ER  -