TY  - BOOK
AU  - Ahson ,A. ,Syed
TI  - VoIP Hand Book : applications, technologies reliability, and security 
SN  - 9781420070200
U1  - 004.6 
PY  - 2009///
CY  - London 
PB  - CRC Press 
KW  - Computer Science 
KW  - Internet telephony -- Handbooks, manuals, etc
KW  - Internet telephony
ER  -