This Technical Specification defines the stage one description of the Packet-switched Streaming Service (PSS). Stage one is the set of requirements that shall be supported for the provision of a streaming service@ seen primarily from the user??s and service providers?? points of view but also includes the service capabilities of the PSS itself This TS includes information applicable to network operators@ service providers@ terminal and network manufacturers. This TS contains the core requirements for the Packet-switched Streaming Service (PSS)@ which are sufficient to enable a range of services.