TY  - BOOK
AU  - Sinnreich, Henry & Johnston, Alan B
TI  - Internet communications using SIP: delivering VoIP and multimedia services with session initiation protocol
SN  - 0-471-41399-2
U1  - 004.62 Sin 
PY  - 2001///
CY  - John Wiley & Sons, Inc., New York
ER  -