High Quality Content by WIKIPEDIA articles! Diameter Credit-Control Application, DCCA in short, is a Diameter application used for credit control. It is an IETF standard defined in RFC 4006. Diameter is a AAA protocol, a type of computer networking protocol for authentication, authorization and accounting, and is a successor to RADIUS. Diameter controls communication between the authenticator (Secure Ticket Authority, STA) and any network entity requesting authentication. Diameter Applications extend the base protocol by adding new commands and/or attributes, such as those for use of the Extensible Authentication Protocol (EAP).

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