MC8795V LINUX DRIVER
Post as a guest Name. Matt Aldridge 1, 11 Sign up or log in Sign up using Google. Therefore you could create a symlink post-fixed with -AT at the end. In the case of Sierra Wireless modules they clearly show which port is which.
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Alex Voskresenskiy 11 1. You should get an echo back or an OK if your configured your modem not to echo.
The common practise is either to setup udev rules for specific modem manufacturer and model. I use this script to get Data and Control ports for 3g usb dongle. In mc8759v case of Sierra Wireless modules they clearly show which port is which. In the case of other manufacturers you’ll need to check the USB interface guide to see if it is possible via ATI to take this approach.
AirPrime / MC series
I also tried to look for information in sysfs to distinguish limux ports but this wasn’t successful either.
MC8795V Sierra 3G usb module
You cannot detect this via external means. If possible I want to get rid of this list and find a way to somehow probe the registered ttys directly to check if they are a control port or a data port.
Otherwise you found your AT control port. In the case of detecting via AT commands the best and more common approach is to execute the AT command to see if the tty responds at all.
I examined the sourcecode of wvdial and modem-manager to see how these tools detect the right port but was unable to find suitable information. I know that port 3 is always the AT command channel. Matt Aldridge 1, 11