TY  - BOOK
AU  - Ransome, James F.
AU  - Rittinghouse, John W.
TI  - VoIP security
SN  - 9788131203019
U1  - 005.8 
PY  - 2008///
CY  - New Delhi
PB  - Elsevier
N1  - "it includes bibliographical references appendix pg.339-402 and index"
ER  -