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Peer-to-peer video sharing
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IMS service description
Peer-to-peer (P2P) video sharing is a basic service on top of the IP Multimedia Subsystem (IMS). The GSM Association calls it "Video Share". For a description of the GSMA Video Share service, please see the wikipedia entry for Video Share.
The most basic form is typically connected to a classical circuit-switched (CS) telephone call. While talking on the CS line the speaker can start in parallel a multimedia IMS session. The session is normally a video stream, with audio being optional (since there is an audio session already open on the CS domain). It is also possible to share photos or files.
Actually, P2P video sharing does not require a full IMS implementation. It could work with a pure IETF Session Initiation Protocol (SIP) infrastructure and simple HTTP Digest authentication. However, mobile operators may want to use it without username/password provisioning and the related frauds problems. One possible solution is the Early IMS Authentication method. In the future USIM/ISIM based authentication could be introduced, too. So the IMS adds up extra security and management features that are normally required by a mobile operator by default.
History
The P2P video sharing was introduced in 2004 by Nokia. Two major operators started commercial implemenations: Telecom Italia Mobile (TIM) in Italy and Telecomunicações Móveis Nacionais, SA (TMN) in Portugal.
The first handsets to support P2P video sharing were the Nokia 6630 and 6680. The 6680 is especially suited for turning on the video sharing by having a slider on top of the back-side camera. Later the Nokia N70 was added to the commercially supported handsets.
Popularity
TIM Italy reported about 10% penetration (based on the potentially available customers with appropriate handsets).
Supported handsets
- Nokia 6630, 6680
- Nokia N70
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