TY  - BOOK
AU  - Johnston,Alan B.
TI  - SIP: understanding the Session Initiation Protocol 
T2  - Artech House telecommunications library
SN  - 9781607839958 (hbk.)
PY  - 2009///
CY  - Boston, Mass.
PB  - Artech House
KW  - Computer network protocols
KW  - Instant messaging
KW  - Computer programs
KW  - Internet telephony
KW  - Multimedia systems
KW  - Session Initiation Protocol (Computer network protocol)
N1  - Includes bilbiographical references and index
ER  -