10.10 Simultaneous interworked calls (on-network)

23.2833GPPMission Critical Communication Interworking with Land Mobile Radio SystemsRelease 18TS

10.10.1 General

An IWF representing an LMR user may support simultaneous interworked calls for the same LMR user. The LMR user can become involved in simultaneous interworked calls when the IWF invites, joins or accepts more than one interworked call on behalf of the LMR user, or when the IWF affilates the LMR user to multiple groups. This subclause is based on the subclause for simultaneous session for MCPTT calls in 3GPP TS 23.379 [7], subclause 10.8.

NOTE: An LMR user affiliating to multiple interworked groups with active calls via the IWF can result in the LMR user being invited simultaneously to multiple interworked calls.

How the IWF accomodates simultaneous interworked calls to a single LMR user is outside the scope of the present document.