name: CSK
full_form: Client-Server Key
context: The MCX Server may decide to update an existing CSK at any time. This may be due to CSK revocation or expiry. The CSK shall be updated by the MCX Server using the 'key download' procedure, defined in clause 5.8. Upon receipt of a CSK via a 'key download' procedure, the MC client shall identify the type of key as a CSK via the 4 most significant bits of the CSK-ID. The MC client shall: - discard any previous CSKs associated with the MC Server FQDN, and - use the new CSK for uplink signaling with the MC Server.
description: The Client-Server Key (CSK) is a critical network attribute used in the Mission Critical Push-to-Talk (MCPTT) service, specifically for secure communication between the MC client and the MCX Server. It is updated via the 'key download' procedure to ensure secure uplink signaling.
explanation: The context explicitly mentions CSK as a key that needs to be updated and used by the MC client for secure communication with the MCX Server, indicating its role as a critical network attribute or parameter.
section_title: 9.2.1.4	CSK update via 'key download'
biotag_Context: O,B-Service,O,O,O,O,O,O,O,B-Parameter,O,O,O,O,O,O,O,O,B-Parameter,O,O,O,O,B-Parameter,O,O,O,O,O,B-Service,O,O,O,O,O,O,O,O,O,O,O,O,O,O,B-Parameter,O,O,O,O,O,O,B-Message,O,O,O,O,O,O,O,O,O,B-Parameter,O,O,O,O,O,O,O,O,O,O,B-Message,O,O,O,O,O,O,O,O,O,O,B-Message,O,O,O,O,O,O,O,B-Parameter,O,O,O,O,O,B-Message,O
biotag_Description: O,B-Parameter,I-Parameter,O,O,O,O,O,O,O,O,O,B-Miscellaneous,I-Miscellaneous,O,O,O,O,O,O,O,O,O,B-Message,O,O,O,B-Service,O,O,O,O,O,O,O,O,O,O,O,O,O,O