H - Electricity – 04 – L
Patent
H - Electricity
04
L
H04L 12/66 (2006.01) H04L 12/24 (2006.01) H04L 12/56 (2006.01) H04L 29/06 (2006.01) H04M 7/00 (2006.01) H04M 11/06 (2006.01) H04Q 3/00 (2006.01) H04L 29/08 (2006.01)
Patent
CA 2390169
This invention relates to the field of Internet Protocol communications. More particularly, this invention is a method for setting up, authorizing, maintaining, and terminating an IP telephony session with quality of service across the Internet by combining session initiation protocol, resource reservation protocol, common open policy service, and open settlement protocol. The method of this invention allows an IP telephony session to benefit from all these protocols. With reference to the figure, an embodiment of this invention involves an SIP client (115, 130, 135, 136) that uses SIP and RSVP; SIP proxy servers (150, 151) that use SIP and COPS; policy servers (140, 141, 142) that use COPS and OSP; a clearing house server (180) that uses OSP; and several routers that use RSVP and COPS (e.g., 160, 161, 170).
L'invention concerne le champ des communications à protocole Internet (IP). Elle concerne en particulier un procédé destiné à établir, à autoriser, à maintenir et à terminer une session téléphonique IP possédant une qualité de service via l'Internet en combinant un protocole d'initiation de session, un protocole de réservation de ressource, un protocole COPS ("common open policy service") et un protocole OSP ("open settlement protocol"). Le procédé de l'invention permet à une session de téléphonie IP de bénéficier de tous ces protocoles. En référence à la figure, une réalisation de cette invention implique un client SIP ("session initiation protocol") (115, 130, 135, 136) qui utilise les protocoles SIP et RSVP ("resource reservation protocol"), des serveurs proxy SIP (150, 151) qui utilisent les protocoles SIP et COPS, des serveurs de polices (140, 141, 142) qui utilisent les protocoles COPS et OSP, un serveur centre d'autorisation et d'échange (180) qui utilise un protocole OSP, et plusieurs routeurs qui utilisent les protocoles RSVP et COPS (par exemple, 160, 161, 170).
Mci Worldcom Inc.
Ridout & Maybee Llp
LandOfFree
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