![]() Under linux, switching is done by the usb-modeswitch program. Under windows, this is done by carrier software available on a virtual CD, or by the huawei proprietary program Mobile Partner. 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. At the same time, the computer receives an IP address directly from the cellular provider through a DHCP request, and the modem acts as a network bridge, transmitting the packets from the computer to the cellular network and back without changing them. The main feature of the stick mode is to establish the connection and support the operation of the channel using the OS of the computer to which the modem is connected. In this case, the modem emulates a network interface through which data is transmitted, and only control commands are sent through the AT port. In addition to the PPP mode, there is an NDIS mode. ![]() The speed is limited - no more than 20-30 Mbit at the reception. This is how almost all previous-generation 3G modems work. With this firmware, the device behaves like a classic USB modem: there is a command AT-port through which you can establish a connection using the PPP protocol (RAS).
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