TY  - BOOK
AU  - Hersent
TI  - IP Telephony: Deploying VoIP Protocols and IMS Infrastructure
SN  - 9780470973080
PB  - Wiley
KW  - "Communication, Networking and Broadcast Technologies; Computing and Processing"
UR  - https://ieeexplore.ieee.org/servlet/opac?bknumber=8039707
ER  -