I use this script to get Data and Control ports for 3g usb dongle. Email Required, but never shown. 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. The common practise is either to setup udev rules for specific modem manufacturer and model. 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. A word of warning though. Stack Overflow works best with JavaScript enabled.

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Otherwise you found your AT control port. Therefore you could create a symlink post-fixed with -AT at the end. The common practise is either to setup udev rules for specific modem manufacturer and model.

AirPrime / MC series

I use this script to mc8795b Data and Control ports for 3g usb dongle. Or you can sequentially connect to each tty and verify via AT command what type of port it is.

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.

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A word of warning though.

MC8795V Sierra 3G usb module

Matt Aldridge 1, 11 mc879v5 By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

You should get an echo back or an OK if your configured your modem not to echo. I know that port 3 is always the AT command channel.

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In the case of Sierra Wireless modules they clearly show which port is which.

AirPrime MC7304

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You cannot detect this via external means.

Stack Overflow works best with JavaScript enabled. I also tried to look for information in sysfs to distinguish the ports but this wasn’t successful either. Sierra Wireless, Incorporated Model: This works for me: Sign up using Email and Password.

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Sign up or log in Sign up using Google. Email Required, but never shown. 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. Alex Voskresenskiy 11 1.

For example a AT control port: 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. 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.

Sign up using Facebook. In the case of udev rules you can follow this process: To check this simply execute a ATI command.