TY  - BOOK
AU  - Johnston,Alan B.
TI  - SIP: understanding the Session Initiation Protocol 
T2  - Artech House telecommunications library
SN  - 9781607839958
AV  - TK5105.55  .J63 2009
PY  - 2009///
CY  - Boston
PB  - Artech House
KW  - Computer network protocols
KW  - Instant messaging
KW  - Computer programs
KW  - Internet telephony
KW  - Multimedia systems
N1  - includes bibliographical references and index
ER  -