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full Contents for  TS 23.501  Word version:   16.4.0

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4.3.4 Interworking between ePDG connected to EPC and 5GS 
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4.3.4  Interworking between ePDG connected to EPC and 5GS  Word-p. 61
4.3.4.1  Non-roaming architecture
Figure 4.3.4.1-1 represents the non-roaming architecture for interworking between ePDG/EPC and 5GS.
Reproduction of 3GPP TS 23.501, Figure 4.3.4.1-1: Non-roaming architecture for interworking between ePDG/EPC and 5GS
Figure 4.3.4.1-1: Non-roaming architecture for interworking between ePDG/EPC and 5GS
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NOTE 1:
The details of the interfaces between the UE and the ePDG, and between EPC nodes (i.e. SWm, SWx, S2b and S6b), are documented in TS 23.402.
NOTE 2:
Interworking with ePDG is only supported with GTP based S2b. S6b interface is optional (see TS 23.502, clause 4.11.4.3.6).
4.3.4.2  Roaming architectures  Word-p. 62
Figure 4.3.4.2-1 represents the Roaming architecture with local breakout and Figure 4.3.4.2-2 represents the Roaming architecture with home-routed traffic for interworking between ePDG/EPC and 5GS.
Reproduction of 3GPP TS 23.501, Figure 4.3.4.2-1: Local breakout roaming architecture for interworking between ePDG/EPC and 5GS
Figure 4.3.4.2-1: Local breakout roaming architecture for interworking between ePDG/EPC and 5GS
Up
NOTE 1:
The details of the interfaces between the UE and the ePDG, and between EPC nodes (i.e. SWm, SWd, SWx, S2b and S6b), are documented in TS 23.402.
NOTE 2:
Interworking with ePDG is only supported with GTP based S2b. S6b interface is optional (see TS 23.502, clause 4.11.4.3.6).
Reproduction of 3GPP TS 23.501, Figure 4.3.4.2-2: Home-routed roaming architecture for interworking between ePDG/EPC and 5GS
Figure 4.3.4.2-2: Home-routed roaming architecture for interworking between ePDG/EPC and 5GS
Up
NOTE 1:
The details of the interfaces between the UE and the ePDG, and between EPC nodes (i.e. SWm, SWd, SWx, S2b and S6b), are documented in TS 23.402.
NOTE 2:
Interworking with ePDG is only supported with GTP based S2b. S6b interface is optional (see TS 23.502, clause 4.11.4.3.6).

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