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ETSI TR 121 904

M00000877

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ETSI TR 121 904 Universal Mobile Telecommunications System (UMTS); User Equipment (UE) Capability Requirements (3G TR 21.904 version 3.1.0 Release 1999)

standard by European Telecommunications Standards Institute, 07/01/2000

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This document defines a baseline set of capability requirements that enable all terminals to register with all applicable 3GPP networks (depending on the availability of a appropriate subscription). It describes all the functions that a terminal must perform in order to exist within a 3GPP network. These functions are used to derive requirements for all aspects of terminal baseline capability. This document also identifies different service capabilities and the functions that a terminal must perform in order to access a service. The actual capabilities that a terminal must posses to meet these requirements are listed in the Annexes to this document and described in the referenced implementation specifications. This document introduces the concept of service-less terminal which can exist in the network but provides no user service. Although this is not a marketable terminal type it describes from the standardisation viewpoint a baseline set of capabilities to which specific service-related terminal capabilities can then be added.