Few Bearers Are Rejected Call Flow

This section describes the Few Bearers are Rejected call flow.

Few Bearers Are Rejected Call Flow
Few Bearers Are Rejected Call Flow Description

Step

Description

1

The SMF sends a N7 Create request to the PCF.

2

The PCF responds to SMF with success response.

3

The AF sends an N5 Create request (Audio and Video) message to the PCF.

4

The PCF performs the N5 Authorization CRD lookup.

5

The N5 Authorization CRD evaluates both the audio and video bearers. The audio bearers that contain the required MediaType IE are tagged as accepted. Video bearers with the missing MediaType IE are rejected. Bearers evaluated to Bearer-Authorization=ACCEPT are authorized and installed on the SMF.

PCF responds to the accepted audio bearers with N5 Create success response.

6

The PCF sends N7 Notify (Audio) to the SMF.

7

The SMF responds to the PCF with a N7 Notify-Resp (Success).

8

Bearers evaluated to Bearer-Authorization=REJECT are marked as unauthorized and are not installed at the SMF.

The PCF sends N5 Notify request (Video) AF-Event=FAILED_RESOURCES_ALLOCATION to AF.

9

The AF responds with N5 Notify success-response to the PCF.