Deepti Dutt
VoIP is a set of technologies that enables voice to be sent over a packet networ k. Users can communicate using VoIP as easily as they do with today's PBXe¡Çs and public phone network. By leveraging the existing data network, companies can sa ve significant amounts of money by using VoIP for toll-bypass, which is particularly important for multinational corporations.
SIP is the real-time communication protocol for Voice over IP (VoIP), and it has been expanded to support video and instant-messaging applications. SIP pe rforms basic call-control tasks, such as session set up and tear down and signal ing for features such as hold, caller ID and call transferring. SIP can be used in "presence" applications where users can list themselves as available, similar to a buddy list.
In the presentation I would give a brief introduction on VOIP, and the SIP proto col. Various Features of SIP protocol and how SIP could be extended to the wirel ess technology eg: WLAN (will discussion some SIP based application over WLAN). Since QoS is the major issue while dealing with multimedia applications in a wir eless environment. I would also be discussing how SIP extension could support cr eating a session maintaining QoS. And brief discussion on how SIP could support wireless sensor networks applications.