Section: 7.2.12 Delete Indirect Data Forwarding Tunnel Request
Content: The Delete Indirect Data Forwarding Tunnel Request message is sent on the S4/S11 interface by the SGSN/MME to the SGW to delete the Indirect Forwarding Tunnels in the Source SGW/Target SGW as part of the following procedures: - S1-based handover - UTRAN Iu mode to E-UTRAN Inter RAT handover - GERAN A/Gb mode to E-UTRAN Inter RAT handover - E-UTRAN to UTRAN Iu mode Inter RAT handover - E-UTRAN to GERAN A/Gb mode Inter RAT handover - MME to SGSN combined hard handover and SRNS relocation procedure - SGSN to MME combined hard handover and SRNS relocation procedure - Inter RAT handover Cancel - S1-based handover Cancel - Optimised Active Handover: E-UTRAN Access to CDMA2000 HRPD Access - EPS to 5GS handover using N26 interface - 5GS to EPS handover using N26 interface - N26 based Handover cancel Table 7.2.12-1: Information Element in Delete Indirect Data Forwarding Tunnel Request