8 Coding

29.3803GPPMission Critical Push To Talk (MCPTT) media plane control interworking with Land Mobile Radio (LMR) systemsRelease 17Stage 3TS

8.1 Introduction

The message and field formats specified in 3GPP TS 24.380 [25] clause 8.1 shall be used.

8.2 Floor control

The procedures specified in 3GPP TS 24.380 [25] clause 8.2 shall be used with the following clarification.

The field formats specified in 3GPP TS 24.380 [25] clause 8.2 shall be supported except for fields and field values used for the following features:

– multi-talker;

– ambient listening; and

– functional alias.

8.3 Pre-established session call control

Pre-established session call control is not applicable to the IWF.

8.4 MBMS subchannel control

MBMS subchannel control is not applicable to the IWF.

8.5 MBMS notifications

MBMS notifications are not applicable to the IWF.