name: MCX
full_form: Mission Critical Services
context: [33.180 MCX-A.13-001] An MCX Service shall provide mechanisms to allow an MCX User to operate in a Partner MCX Service System, subject to authorization from both the Partner and the Primary MCX Service Systems of the MCX User (R-6.17.2-001 [47]). [33.180 MCX-A.13-002] The authentication of an MCX User with an MCX Service in a Partner MCX Service System shall be based on security parameters obtained from the Primary MCX Service System of the MCX User (R-6.17.2-002 [47]). NOTE 1: This is an application layer authentication and not 3GPP network authentication. [33.180 MCX-A.13-003] An MCX Service shall provide mechanisms to allow an MCX User on the Primary MCX Service System to affiliate to an MCX Service Group from a Partner MCX Service System, subject to authorization from the Primary MCX Service System and the Partner MCX Service System where the MCX Service Group is defined (R-6.17.2-004 [47]). [33.180 MCX-A.13-004] An MCX Service shall provide mechanisms to allow a roaming MCX User
description: Mission Critical Services (MCX) is a telecommunications service that provides critical communication capabilities for mission-critical applications, such as public safety and emergency services. It enables secure and reliable communication between users and groups, with features like authentication, authorization, and affiliation to MCX Service Groups.
explanation: The context from 3GPP TS 33.180 describes the functionality of MCX in terms of user authentication, service group affiliation, and roaming capabilities, which are characteristic of a telecommunications service offering.
section_title: A.13	Inter-domain
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