TY  - BOOK
AU  - Walker,John Q, Hicks, Jeffrey T
AU  - x
TI  - Taking charge of your VOIP project: x
SN  - 8129710234
U1  - 004.678/W181t 
PY  - 2004///
CY  - New Delhi
PB  - Pearson education
KW  - Voice over Internet protocol
KW  - Internet
N1  - Includes
ER  -