In wireless applications, the S3 interface is a 4G interface between the MME and SGSN.
Overview
S3 interface is between the MME and SGSN. It uses GTP V2 over UDP transport protocol.
Network Diagram
Messages
- Create Session Request/Response
- Modify Session Request/Response
- Delete Session Request/Response
Call Flows
Standards
- 3GPP TS 29.274
Related Products and Protocols
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