A telecommunications chip card, operating within a first wireless terminal, for carrying personalization data for connection to at least a mobile telecommunications network, said telecommunications chip card further comprising: - means for receiving a dialled telephone number from the first wireless terminal coupled to a first network in response to initiating a call between said first wireless terminal and a second wireless terminal, wherein said dialled telephone number belongs to said second wireless terminal, and wherein the first network is a GSM or UMTS network; - means for obtaining a geographic location of said first wireless terminal by reading a regional location stored in the telecommunications chip card; - means for fetching an access point address from a look-up table according to said geographic location, wherein said look-up table is stored in said telecommunications chip card, wherein said access point address belongs to an access point coupled to said first and a second network and within said geographic location, wherein said second network is coupled to said first network, and wherein the access point address is a telephone number; - means for initiating a connection with said access point by dialling said telephone number of said access point; - means for sending said dialled telephone number belonging to said second wireless terminal to said access point via said initiated connection for establishing, between said first wireless terminal and the second wireless terminal coupled to a third network and having said dialled telephone number, a connection through said first, second and third network, wherein said second network is coupled to said third network; - means for connecting said call between said first and said second wireless terminal; wherein the telecommunications chip card is a subscriber identity module or a universal subscriber identity module. - means for receiving a dialled telephone number from the first wireless terminal coupled to a first network in response to initiating a call between said first wireless terminal and a second wireless terminal, wherein said dialled telephone number belongs to said second wireless terminal, and wherein the first network is a GSM or UMTS network; - means for obtaining a geographic location of said first wireless terminal by reading a regional location stored in the telecommunications chip card; - means for fetching an access point address from a look-up table according to said geographic location, wherein said look-up table is stored in said telecommunications chip card, wherein said access point address belongs to an access point coupled to said first and a second network and within said geographic location, wherein said second network is coupled to said first network, and wherein the access point address is a telephone number; - means for initiating a connection with said access point by dialling said telephone number of said access point; - means for sending said dialled telephone number belonging to said second wireless terminal to said access point via said initiated connection for establishing, between said first wireless terminal and the second wireless terminal coupled to a third network and having said dialled telephone number, a connection through said first, second and third network, wherein said second network is coupled to said third network; - means for connecting said call between said first and said second wireless terminal;