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SIP Last modified: Friday, June 13, 2008

(1) Short for Session Initiation Protocol, it is an application-layer control protocol; a signaling protocol for Internet Telephony. SIP can establish sessions for features such as audio/videoconferencing, interactive gaming, and call forwarding to be deployed over IP networks, thus enabling service providers to integrate basic IP telephony services with Web, e-mail, and chat services. In addition to user authentication, redirect and registration services, SIP Server supports traditional telephony features such as personal mobility, time-of-day routing and call forwarding based on the geographical location of the person being called. See "The Difference Between VoIP and PSTN Systems" in the Did You Know... section of Webopedia. (2) Short for single in-line package, a type of housing for electronic components in which the connecting pins protrude from one side. Compare with DIP and PGA. A SIP is also called a Single In-line Pin Package (SIPP). Sponsored listings Enterprise IP Telephony Guide - Discover Pure IP Unified Communications Solutions. Download a Free Enterprise IP Telephony eBook to Help Plan, Implement & Deploy Your System Today! Telecommunications Training - Telecom, datacom, networking, IP, MPLS, VoIP and wireless training for non-engineers. Seminars, DVD video courses, CBT, textbooks, free tutorials.

Enterprise VoIP Planet The IT Manager's Guide to Voice over IP Webopedia's "Did You Know...?" Section Use this Webopedia knowledge section for an in-depth overview of specific technologies and occurrences in the areas of Computer Science, The Internet, and Computer Hardware and Software. Webopedia's Quick Reference Section Use this Webopedia reference section for information on common Internet and computer facts and occurrences.