11.0 General

24.3793GPPMission Critical Push To Talk (MCPTT) call controlProtocol specificationRelease 18TS

This clause describes the private call procedures between two MCPTT clients for on-network and off-network.

For on-network, private call procedures with floor control are specified in clause 11.1.1 and without floor control are specified in clause 11.1.2.

For on-network, private call procedures are specified for the MCPTT client, the participating MCPTT function and the controlling MCPTT function on the originating side and terminating side. These procedures include the support for first-to-answer call.

For off-network, only private call procedures with floor control are specified in clause 11.2.

For off-network, private call procedures are specified for the MCPTT client on the originating side and terminating side.

For both on-network and off-network private calls, the use of automatic commencement mode and manual commencement mode are specified.