Request For Comments

In Release 15, the RFC function was enhanced to handle specific procedural scenarios for managing floor control, including the handling of multiple floor requests from the same user when queuing and the processing of floor requests received by a former floor arbitrator from the user who was granted the floor. Additionally, the release incorporated the published RFC 8583, which standardized the Diameter Load control mechanism, and introduced procedures related to a Requested Node AMF.

• Handling mulitple Floor Requests from same user when queuing TS 24.380CR0191
• Handling Floor Requests received by former floor arbitrator from floor granted user TS 24.380CR0190
• draft-ietf-dime-load published as RFC 8583 TS 29.229CR0293
• Requested Node AMF TS 29.329CR0249
• draft-ietf-dime-load published as RFC 8583 TS 29.329CR0251

In Release 16, the RFC function was enhanced with specific procedures for handling unacknowledged group call requests in MCPTT, providing a list of non-responding members. The release also introduced refined state management to handle a 'Floor taken' message while in a 'Pending request' state and clarified the handling of transmission end requests while awaiting prior responses.

• List of MCPTT group members who did not acknowledge the group call request TS 24.483CR0065
• List of MCPTT group members who did not acknowledge the group call request TS 24.484CR0134
• Handle Floor taken message in 'Pending request' state of floor participant state m/c TS 24.380CR0240
• Removing Transmission cancel request and Transmission cancel response TS 24.581CR0062
• EN on Floor Request multi talker TS 24.380CR0222
• SSRC handling for implicit floor request case TS 24.380CR0242

+ 2 more changes

In Release 17, the RFC function was enhanced with new procedures for managing the floor request queue, including the ability for an authorized user to cancel a queued request and to clear the entire queue. The release also updated IETF references for ICE and RFC 7616, and provided a terminology fix for the authorization semantics of "Allow-request-affiliated-groups." These updates refined the control mechanisms available to the service requester within the service relationship.

• Cancel queued floor request and notify to users TS 24.380CR0275
• An authorized user clearing the entire floor request queue TS 24.380CR0304
• Update of IETF references for ICE TS 29.232CR0662
• Update of IETF references for ICE TS 29.332CR0202
• Floor request queue terminology TS 24.380CR0305
• Allow-request-affiliated-groups authorization semantics fix TS 24.484CR0203

+ 2 more changes

In Release 18, the RFC function was enhanced by adding the user ID parameter to Floor Request and Transmission Request messages from the NCF to the CF, as specified for MCPTT and MCVideo services. The release also provided clarifications on handling the release of queued floor request re-transmissions and on the applicability of IETF RFC 8101 namespaces. Furthermore, corrections were made to procedural message names and usage guidance for RTP SSRC during call setup with implicit transmission requests.

• MCPTT Adding user ID in Floor Request message from NCF to CF TS 24.380CR0348
• MCVideo Adding user ID in Transmission Request message from NCF to CF TS 24.581CR0112
• Correction of Queued Floor Request message name TS 24.380CR0325
• Plugtest issue 10.1.4 of Nov 2022: Handling of release queued floor request re-transmission TS 24.380CR0330
• Clarification on applicability of the namespaces IETF RFC 8101 TS 24.484CR0237
• RTP SSRC of audio and video media streams usage in during call setup using implicit transmission request - med plane TS 24.581CR0110

+ 1 more changes

In Release 19, the RFC function was updated to include procedures for terminating a local BDC establishment even when the incoming INVITE request's SDP lacks a BDC media component. It also introduced new configuration parameters for authorizing emergency remote floor requests, both for management objects and general network configuration. Furthermore, the release updated the normative IETF reference governing the process for signing and verifying third-party user identity information.

• Terminating local BDC establishment without BDC media component in SDP of incoming INVITE request TS 23.228CR1416
• Emergency remote floor request authorization MO configuration TS 24.483CR0190
• Emergency remote floor request authorization configuration TS 24.484CR0287
• Update the IETF reference to the process of signing and verifying third party user identity information TS 23.228CR1652