TY  - BOOK
AU  - Ahson,Syed
AU  - Ilyas,Mohammad
TI  - VoIP handbook: applications, technologies, reliability, and security 
SN  - 1420070207
PY  - 2009///
CY  - Boca Raton
PB  - CRC Press
KW  - Internet telephony
KW  - Handbooks, manuals, etc
N1  - Includes bibliographical references and index
ER  -