TY  - BOOK
AU  - Hersent,Olivier
TI  - IP telephony: deploying VoIP protocols and IMS infrastructure 
SN  - 9780470665848
PY  - 2010///
CY  - Chichester, West Sussex
PB  - John Wiley
KW  - Internet telephony
KW  - Convergence (Telecommunication)
N1  - Includes index
ER  -