ETSI - EN 300 812
Terrestrial Trunked Radio (TETRA); Security Aspects; Subscriber Identity Module to Mobile Equipment (SIM-ME) Interface
|Publication Date:||1 August 2001|
The present document defines the interface between the Subscriber Identity Module (SIM) and the Mobile Equipment (ME) for use during the network operation phase of TETRA as well as those aspects of the internal organization of the SIM which are related to the network operation phase. This is to ensure interoperability between a SIM and a ME independently of the respective manufacturers and operators. The concept of a split of the MS into these elements as well as the distinction between the TETRA network operation phase, which is also called TETRA operations, and the administrative management phase is described in the User Requirement Specification ETR 295 .
The present document defines:
• the requirements for the physical characteristics of the SIM, the electrical signals and the transmission protocols;
• the model which shall be used as a basis for the design of the logical structure of the SIM;
• the security features; This edition of the standard covers the security mechanisms for ITSI based services including authentication and OTAR for keys addressed to an ITSI;
• the interface functions;
• the commands;
• the contents of the files required for the TETRA application;
• the application protocol.
The present document does not specify any aspects related to the administrative management phase. Any internal technical realization of either the SIM or the ME are only specified where these reflect over the interface. The present document does not specify any of the security algorithms which may be used.
The physical SIM described in the present document is a removable Integrated Circuit (IC) card. The SIM is an optional device within TETRA MSs. The present document does not preclude the implementation of fully functional MSs without a SIM. All references to mobile equipment in the present document are to be taken to mean mobile equipment which have been designed to operate with a SIM.
The present document deals with all aspects of trunked mode MS operation. For direct mode MS operation key user operation is supported by the SIM but not key holder or key generator operation. Furthermore, storage of information for direct mode MS operation in repeater and gateway mode are supported, but any extra storage required in the direct mode repeater or direct mode gateway terminals themselves is not supported.