Patent ID: 8121584
Filing Date: 2012-02-21
Classification: H04L,H04M

Abstract:
1. A communication apparatus accompanying with a first radio transceiver module, a second radio transceiver module, a first subscriber identity card camping on a first cell belonging to a first wireless network via the first radio transceiver module and a second subscriber identity card camping on a second cell belonging to a second wireless network via the second radio transceiver module, comprising: processor logic coupled to the first radio transceiver module, the second radio transceiver module, the first subscriber identity card and the second subscriber identity card, building a conference communication for the first subscriber identity card with at most (N−1) peer communication entities via the first cell; processor logic receiving an add request to add a new peer communication entity to the conference communication; processor logic adding the second subscriber identity card to the conference communication via the first cell, and adding the new peer communication entity to the conference communication via the second cell, wherein the first wireless network is capable of providing a conference communication service for the first subscriber identity card with at most N peer communication entities; and processor logic configured to fetch data and subscriber identity module (SIM) application toolkit commands, wherein the communication apparatus is programmed in response to the first or second subscriber identity card being plugged in making the information stored on the first or second subscriber identity card accessible to the processor logic.