RFC 3588:Diameter Base Protocol
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accounting requirement


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... ABNF] grammar (see Section 3.2). If the Diameter application has accounting requirements, it MUST also specify the AVPs that are to be present in the Diameter Accounting messages ...


... Glass, S., Hiller, T., Jacobs, S. and C. Perkins, "Mobile IP Authentication, Authorization, and Accounting Requirements", RFC 2977, October 2000. ...



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