Procedural Timer Call Flow

This section describes the procedural timer call flow.

Procedural Timer Call Flow
Procedural Timer Call Flow Description

Step

Description

1

The AMF starts the Procedure timer upon receiving Registration Request per UE basis.

2

AMF starts the T3550 timer when it sends the Registration Accept to UE and stops after receiving the Registration Complete.

When the timer expires before sending Registration Accept towards the UE, the following actions takes place:

  • Clear context locally, on UDM and PCF.

  • Registration Reject procedure.

When Registration Accept to the UE is successful, AMF updates t3550 (retry and timeout) based on remaining time and retry count.

3

The UE sends Registration Complete to the AMF.