Mission Critical Push To Talk (MCPTT) call control interworking with Land Mobile Radio (LMR) systems; Stage-3
The present document specifies the call control protocols needed to support a Mission Critical Push To Talk (MCPTT) system interworking with a Land Mobile Radio (LMR) system.
The IWF supports the basic group and other features as specified in 3GPP TS 23.283 [28]. The present document describes functionality modelled on 3GPP TS 24.379 [29].