DUAL BAND DUAL MODE MODEM AND METHOD FOR PERFORMING HANDOVER OF DUAL BAND DUAL MODE MODEM

摘要

PURPOSE: A method for performing a handover of the dual band dual mode modem is provided to perform handover between two modems without using a USB hub which needs a power supply. CONSTITUTION: A UICC(Universal Integrated Circuit Card)(170) comprises a subscriber identification module. The UICC is connected to a first modem. The UICC is initialized through the first modem. A USB switch(110) offers an interface with an external device. The USB switch switches a USB connection between the external device and a modem based on the control of the external device.