Dobrica Pavlinušić’s random unstructured stuff (Huawei AT commands) http:// [ ] usb Manufacturer: HUAWEI Technology. 2/1/ Huawei AT comands for 3G modems Forum Register Unlock to enter NCK code in some modems Huawei, screened for E, E, E, this. Using Huawei E 3G modem in Debian possible to change the default state of the device using the following AT commands (found here).
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I use this nice little 3G modem from time to time whenever I’m away from home and work.
Here’s how it works in Debian. First of all, this modem uses the so called ZeroCD mode to facilitate driver installation in Windows. The Windows software then performs some special action to put the modem into the actual “modem mode” in which it even has different USD IDs.
To switch the mode, I used the modem-modeswitch binary that used to be included in the udev package:. This cokmands is used to communicate with the modem.
Apparently, instead of the deprecated modem-modeswitch from udev, the usb-modeswitch Debian package can be installed in order to automatically switch the device into the modem mode every time it is plugged in, but I never used it.
I opted for disabling ZeroCD altogether. It is possible to change the default state of the device using the following AT commands found here:.
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AT commands can be entered cimmands using your favorite serial communication program, for instance picocom:. I chose the value to be able to use both the modem and the built-in microSD card reader. Once the command is entered, no mode switching is necessary any more. I use the following udev rule to run the script that automatically unlocks the card every time I plug the modem in:.
The connection can be huaweii with a single command, no need to edit any config files. The last step is to put pppd and chat configuration into static files.
It is pretty straightforward and I’ll leave it as an excercise for the reader: This ZeroCD feature is of course completely unnecessary and even annoying in linux.
When first plugged in, the modem shows up like this: It is possible to change the default state of the device using the following AT commands found here: I use the following udev rule to run the script that automatically unlocks the card every time I plug the modem in: Permanent pppd and chat configuration The last step is to put pppd and chat configuration into static files.