T3346 Call Flow

This section describes the T3346 call flow.

T3346 Timer Call Flow
T3346 Timer Call Flow Description

Step

Description

1

The UE sends registration request/service request.

2

With AMF in congestion state:

  • For registration request, AMF rejects the message with cause as congestion and includes t3346 timer.

  • For UL-NAS transport (Payload container type: N1 SM information), AMF sends DL-NAS message with cause as congestion and includes back-off timer.