TY  - BOOK
AU  - Thermos,Peter
AU  - Takanen,Ari
TI  - Securing VoIP networks: threats, vulnerabilities and countermeasures 
SN  - 0321437349
AV  - TK5105.8865  .T43 2008
PY  - 2008///
CY  - Boston, MA
PB  - Pearson
KW  - Internet telephony
KW  - Security measures
ER  -