... /1900 or 850/900/1800/1900MHz 8 SIM card slots Wireless access to internet Comply with GSM ... 2,switch independence, support for the size of SIM card; 3,ports support hot-swapping; 4,a separate ... USB2.016USBMODEMPOOL16 Channels GSM MS MODEM with 1 PCI card Only 16 Channels GPRS MMS MODEM Telecom multi- ... 2,switch independence, support for the size of SIM card; 3,ports support hot-swapping; 4,a separate ...