TY  - BOOK
AU  - Hersent,Olivier
AU  - Petit,Jean-Pierre
AU  - Gurle,David
TI  - IP telephony: deploying voice-over IP protocols 
SN  - 0470023597
AV  - TK5105.8865 .H47 2005
U1  - 621.38212 
PY  - 2005///
CY  - Chichester
PB  - John Wiley
KW  - Internet telephony
ER  -