Definitions for Release 2000 PS Domain The PS

Definitions for Release 2000 • PS Domain The PS domain comprises all network and terminal functionality for provision of bearer services in a packet oriented manner. • IP Multimedia Domain The IM domain (IP Multimedia domain) enables new services with multiple media components per call based on non-UMTS IP multimedia call control standards (e. g. SIP). Terminals using the services of the IM domain have to support the IP bearer services of the PS domain. Also, services comparable to that of the CS domain can be offered, e. g. pure voice calls. • CS Domain The CS domain comprises all network and terminal functionality for provision of bearer- and teleservices in a circuit oriented manner. Transport and control of the CS domain network are separated to enable service provision by different means of transport resources (ATM, IP, STM, . . . ) for better transport resource efficiency and convergence with the PS domain transport. • All IP option This term should not be used, due to misunderstanding of scope. The All IP option comprises logical functionality providing IP multimedia domain services? or The All IP option comprises both PS and CS domain IP development? • All services belong to one or more domains introduced above. • 3 GPP Release 2000 specification set allows implementation of hybrid CS/PS network or only CS network or only PS network with/without IP multimedia domain.