TY  - GEN
AU  - Endler,David
AU  - Collier,Mark
TI  - Hacking exposed VolP: voice over IP security secrets & solutions 
SN  - 0070647658
U1  - 005.8 
PY  - 2007///
CY  - New Delhi
PB  - Tata Mc-Graw Hill Publishing
N1  - Includes index
ER  -