> For the complete documentation index, see [llms.txt](https://diameter.learn-telecom.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://diameter.learn-telecom.com/the-protocol/diameter-rfcs.md).

# Diameter RFCs

### Provides AAA Framework 

• Ability to exchange Diameter Commands and deliver AVPs 

• Routing of Commands 

• Basic Applications e.g. accounting 

• Capabilities exchange (supported applications) 

• Error notification 

• Extensibility: addition of new applications, commands, and AVPs

### IETF RFCs

RFC 6733: Diameter Base Protocol (obsoletes 3588 but is backwards compatible) 

RFC 3539: Transport Profile 

RFC 4004: Mobile IP Application 

RFC 4005: Network Access Application 

RFC 4006: Credit Control Application