TY  - BOOK
AU  - Hersent, Olivier & Petit, Jean Pierre
TI  - Beyond VoIP Protocols : Understanding Voice Technology and Networking Techniques for IP Telephony
SN  - 0470023627
U1  - 621.385 
PY  - 2005///
PB  - John Wiley and Sons, Inc
KW  - IT
KW  - F-24
ER  -