Nederlandse Organisatie Voor Toegepast-natuurwetenschappelijk Onderzoek Tno

Yetao Zhu

Hans Maarten Stokking

Fabian Arthur Walraven

Frank Theodoor Henk Den Hartog

Method for exchanging control codes between a SIP (Session Initiation Protocol) enabled first network element () of an IMS (IP Multimedia Subsystem) network (), e.g. a mobile terminal connected to such network, and a UPnP (Universal Plug and Play) enabled second network element () of a UPnP enabled network (), both networks being interconnected by an IMS/UPnP interface (). The first network element () addresses a request to a SIP/SIP interface (), using an address which conforms to the Wildcard PSI (Public Service Identity) format and comprising a PSI address part A which is valid for PSI addressing, and a wildcard address part A'. Then the PSI address part A is converted, in the SIP/SIP interface (), into a valid SIP URI (Universal Resource Identifier) address B assigned to die IMS/UPnP interface (), while the wildcard address part Ais converted into an address parameter B, pointing or assigned to the second network element of the UPnP enabled network. Next, in the IMS/UPnP interface () the URI parameter B&#x2032; is converted into a corresponding UPnP address (C). Finally, SIP based and UPnP based control codes (CTRSIP,CTRUPP) are converted and exchanged back and/or forth between the SIP enabled first network element () and the UPnP enabled second network element ().

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Delft, Netherlands

Yetao Zhu