Section: 16a.4.4 ACA Command
Content: The ACA command, defined in Diameter Base (IETF RFC 6733 [111]), is indicated by the Command-Code field set to 271 and the ‘R’ bit cleared in the Command Flags field., It is sent by the Diameter server to the GGSN/P-GW in response to the ACR command. The relevant AVPs that are of use for the Gi/Sgi interface are detailed in the ABNF description below. Other valid AVPs for this command are not used for Gi/Sgi purposes and should be ignored by the receiver or processed according to the relevant specifications. Message Format: <AC-Answer> ::= < Diameter Header: 271, PXY > < Session-Id > { Result-Code } { Origin-Host } { Origin-Realm } { Accounting-Record-Type } { Accounting-Record-Number } [ Acct-Application-Id ] [ User-Name ] [ Event-Timestamp ] [ Error-Message ] [ Error-Reporting-Host ] [ Failed-AVP ] [ Origin-State-Id ] [ NAS-Identifier ] [ NAS-IP-Address ] [ NAS-IPv6-Address ] [ NAS-Port ] [ NAS-Port-Id ] [ NAS-Port-Type ] [ Service-Type ] [ Accounting-Realtime-Required ] [ Acct-Interim-Interval ] * [ Class ] * [ Proxy-Info ] * [ Route-Record ] * [ AVP ]