Clear Call Handling Call Flow

This section describes the Clear Call Handling call flow.

Clear Call Handling Call Flow
Clear Call Handling Call Flow Description

Step

Description

1

On the SGW, the control plane receives the User Plane Inactivity Report in Sx Session Report Request. The control plane evaluates if PDN in the request is the latest PDN, or the inactivity report has already reported other PDNs. The control plane initiates the ClearCall procedure.

2

After receiving the ClearCall message, the cnSGW-C triggers a Session Deletion Request to its peers.

3

The SGW sends the Delete Bearer Request to the S11/MME.

4

The SGW sends the Delete Session Request to the S5/PGW.

5

On receiving the Delete Session Request, SGW clears resources on the UPF by sending a Sx Session Delete Request.