TY  - BOOK
AU  - Johnston,Alan B.
AU  - Piscitello,David M.
TI  - UNDERSTANDING VOICE OVER IP SECURITY
SN  - 1596930500
U1  - 005.8 
PY  - 2006///
CY  - 
PB  - Artech House, Boston
KW  - Internet Telephony -- Security Measures
ER  -