3 Definitions and abbreviations

26.2453GPPRelease 17Timed text formatTransparent end-to-end Packet-switched Streaming Service (PSS)TS

3.1 Definitions

For the purposes of the present document, the following terms and definitions apply:

continuous media: media with an inherent notion of time. In the present document speech, audio, video and timed text

discrete media: media that itself does not contain an element of time. In the present document all media not defined as continuous media

PSS client: client for the 3GPP packet switched streaming service based on the IETF RTSP/SDP and/or HTTP standards, with possible additional 3GPP requirements according to the present document

PSS server: server for the 3GPP packet switched streaming service based on the IETF RTSP/SDP and/or HTTP standards, with possible additional 3GPP requirements according to the present document

3.2 Abbreviations

For the purposes of the present document, the abbreviations given in 3GPP TR 21.905 [6] and the following apply.

3GP 3GPP file format

MMS Multimedia Messaging Service

MP4 MPEG-4 file format

PSS Packet-switched Streaming Service

SMIL Synchronised Multimedia Integration Language

UTF-8 Unicode Transformation Format (the 8-bit form)

UTF-16 Unicode Transformation Format (the 16-bit form)