Patent ID: 8775683

Claim:
A method for exchanging control codes between a SIP enabled first network element of an IMS network and a UPnP enabled second network element of a UPnP enabled network, both networks being interconnected by an IMS/UPnP interface, the method comprising the steps of: the first network element addressing a request to a SIP/SIP interface, using an address which conforms to the Wildcard PSI format and comprising a PSI address part A which is valid for PSI addressing, and a wildcard address part A′; the SIP/SIP interface converting the PSI address part A into a valid SIP URI address B assigned to the IMS/UPnP interface, while converting the wildcard address part A′ into an address parameter B′ pointing or assigned to the second network element of the UPnP enabled network; the IMS/UPnP interface converting the address parameter B′ into a corresponding UPnP address; and converting SIP based and UPnP based control codes and exchanging back and/or forth said control codes between the SIP enabled first network element and the UPnP enabled second network element, wherein the exchanging back and/or forth makes use of the UPnP address obtained by said steps of converting by the SIP/SIP interface and the IMS/UPnP interface.