![]() In order for modem ports to appear, you need to switch the composition. The initial USB stick stick composition is a virtual CD-ROM and microSD card reader. ![]() In this case, the computer receives the IP-address directly from the mobile service provider via a DHCP request, and the modem operates as a network bridge passing packets from the computer to the cellular network and vice versa, without changing their way. The main feature of the stick-mode - to connect and channel support work is carried out by means of a computer operating system that is connected to the modem. In this modem emulates network interface, through which data is transmitted, and through AT-port are only control commands. In this case, the speed is limited - no more than 20-30 Mbit per reception. ![]() That's how work almost all 3G-modems previous generations. With this insertion device behaves like the classic USB-modem: AT-command has a port through which a connection can be via PPP-protocol (RAS).
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