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What is RFC 6733?

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This latest version of the Diameter base protocol defined in RFC 6733 is a positive step in developing Diameter signaling protocol, the central nervous system for LTE and next-generation networks. The upgrades were based on specific needs and requirements of telco operators.

Some of the improvements in this new version include:

  • Tighter security with better connections between peers by requiring the use of TLS/TCP and DTLS/SCTP
  • Added routing functionality and flexibility using routing tables add-ons
  • Additional SCTP functionality (Stream Control Transmission Protocol, a transport layer protocol)
  • Updates to AVPs and messages to enable additional functionality and better interworking
  • Caching mechanism to reduce signaling, increase performance, and enable additional routing capabilities

There will be other releases, as the standardization process is not yet complete.

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