The application/osp-token MIME type

Document Type Expired Internet-Draft (individual)
Authors David Oran  , Stephen Thomas  , Butch Anton  , Richard Brennan 
Last updated 1999-04-07
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


The Open Settlement Protocol (OSP)[1], an open standard from the European Telecommunications Standards Institute, specifies a means by which IP telephony equipment in one administrative domain may request access to IP telephony equipment (including, but not limited to: Gateways, Gatekeepers, Border Elements, etc.) in another administrative domain. OSP grants such access by returning authorization tokens, which must then be passed to the destination IP telephony gateway during call signaling. In order to support access control via OSP, IP telephony signaling protocols must be capable of carrying these authorization tokens in an interoperable way. This memo defines just such a method for protocols, such as the Session Initiation Protocol[2], that can support carriage of MIME types during call signaling. This memo conforms to the requirements for MIME type registration defined in RFC 2048[3].


David Oran (
Stephen Thomas (
Butch Anton (
Richard Brennan (

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