PakCat catalogue record SIP understanding the Session Initiation Protocol By Johnston, Alan B. Bibliographic details ISBN1580536557 PublisherArtech House Publication placeLondon Publication year2004 Edition2nd ed. Material typeReference book Physical descriptionxxiii, 283 p. SubjectsComputer network protocols., Instant messaging--Computer programs., Internet telephony--Computer programs., Multimedia systems--Computer programs., Session Initiation Protocol