TY  - BOOK
AU  - Wright, David J.,
TI  - Voice Over Packet Networks 
SN  - 0471495166
U1  - 004.65 
PY  - 2001///.
CY  -  New York
PB  - John Wiley & Sons Ltd, 
N1  - This book is having Standards Bibliography on page no 239.
ER  -