Delete IDFT (System-level) Call Flow
This section describes the Delete IDFT (system-level) call flow.

Step |
Description |
---|---|
1 |
Call is connected with the Source eNodeB and indirect forwarding tunnels are created. MME sends the S11 Delete IDFT Request with Bearer Context with a DL/UL enB FTEID, to the GTP-EP S11. |
2 |
The GTP-EP S11 forwards the S11 Delete IDFT Request with Bearer Context with a DL/UL enB FTEID, to the SGW-SVC. The SGW-SVC receives the S11 Delete IDFT Request and performs the following:
|
3 |
The SGW-SVC sends the Sx Modification Request with Remove Traffic Endpoints, to the PFCP-EP. |
4 |
The PFCP-EP sends the Sx Modification Request with Remove Traffic Endpoints, to the UP. |
5 |
The UP sends the Sx Session Modification Response to the PFCP-EP. |
6 |
The SGW-SVC receives the Sx Session Modification Response from the PFCP-EP and performs the following:
|