scope:

The present document provides the service requirements that are common across two or more mission critical services, that is MCPTT, MCData and MCVideo. The mission critical services make use of capabilities included in Group Communications System Enablers and Proximity Services, with additional requirements specific to the MCPTT Service as specified in 3GPP TS 22.179 [1], MCVideo Service as specified in 3GPP TS 22.281 [2], and MCData Service as specified in 3GPP TS 22.282 [3]. The mission critical services can be used for public safety applications and maritime safety applications and also for general commercial applications (e.g., utility companies, railways and maritime usage). The requirements in this specification do not apply to GSM or UMTS.