TY  - GEN
AU  - Johnston, Alan B.
TI  - SIP: understanding the Session Initiation Protocol 
T2  - Artech House telecommunications library
SN  - 9781580536554 (hbk.)
AV  - TK5105.55 .J64 2004
U1  - 004.62 
PY  - 2004///
CY  - Boston
PB  - Artech House
KW  - Computer network protocols
KW  - Instant messaging
KW  - Computer programs
KW  - Internet telephony
KW  - Multimedia systems
N1  - Includes references ; appendixes ; index & bibliography
ER  -