Method and apparatus to deliver precustomized business card multimedia contents through IMS based PLMNs for improving the existing calling line identification service

摘要

An improved Calling Line Identification (CLI) service is implemented inside a cellular telephony network connected to the IMS platform for delivering IP-based multimedia services to the end users. The new architecture is based on a multimedia CLI-dedicated server (MM-CLI) connected to the IMS and the packet switched (PS) domain of the core network. The MM-CLI comprises: a Control server, media storage, and a web interface. The control server is devoted to handle the SIP signalizing flow including a SIP element called MESSAGE carrying in its body either the multimedia contents of the so-called business card or HTTP address link to retrieve the components of said multimedia contents. The media storage stores multimedia contents of the business cards and/or said HTTP address links according to respective user's profiles. The web interface web allows the end users to download the multimedia components of the business cards through the addressed HTTP links. The handsets include a client application for monitoring the line status of the caller and transmitting the SIP MESSAGE at the very initial instant of the call setup. The client further monitors both the line status of the callee and the incoming SIP stack for synchronizing the CLI information and either get or retrieve the multimedia components of the business card. A player internal to the user phone renders and plays the business cards (fig.2).