Patent ID: 8407352

Claim:
A method for using a Session Initiation Protocol (SIP) service from a non-SIP device, the method being executed in an Application Server and comprising: receiving a request for a SIP service from a non-SIP device; retrieving a Personal Contact Card (PCC) of a user associated with the non-SIP device from a Contact Server; determining from the PCC that there is no SIP Uniform Resource Identifier (URI) associated with the user and, in response: generating a SIP request for the SIP service having a Request URI that is set to an address configured for the Application Server; inserting a user identity obtained from the PCC as payload data for the SIP request in Multipurpose Internet Mail Extensions (MIME) format; setting a Require header of the SIP request to a value indicating to a SIP Server targeted by the SIP request to identify the user associated with the SIP request from the user identity carried as the payload data in the SIP request; and setting a From header of the SIP request to a value corresponding to the user identity; sending the SIP request to the SIP Server and receiving a corresponding SIP response from the SIP server; and identifying the SIP response as corresponding to the non-SIP device, based on the SIP response being directed to the value set in the From header of the SIP request, and sending a corresponding notification to the non-SIP device.