Authentication, Authorization, Accounting and Billing of Roaming Users using SAML

Document Type Expired Internet-Draft (individual)
Authors Silvana Greco  , Henning Schulzrinne 
Last updated 2007-07-12
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Expired & archived
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


Roaming services allow users that have a contract with a voice service provider to use access resources owned by other providers known as internet access providers. This draft proposes a token- based Authentication, Authorization, Accounting (AAA) and billing model for roaming users supporting the Session Initiation Protocol (SIP). It also introduces a protocol solution for the proposed model that is based on the Security Assertion Markup Language (SAML) protocol and the Hypertext Transfer Protocol (HTTP).


Silvana Greco (
Henning Schulzrinne (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)