Sign up or log in Sign up using Google. Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of service , privacy policy and cookie policy , and that your continued use of the website is subject to these policies. 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. Otherwise you found your AT control port. In the case of Sierra Wireless modules they clearly show which port is which.
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Or you can sequentially connect to each tty and verify via AT command what type of port it is. I also tried to look for information in sysfs to distinguish the ports but this wasn’t successful either.
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Post as a guest Name. By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies. Sign up or log in Sign up using Google. Otherwise you found your AT control port. 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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Alex Voskresenskiy 11 1. For example a AT control port: To check this simply execute a ATI command. In the case of udev rules you can follow this process: Sierra Wireless, Incorporated Model: 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. 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.
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Sierra Wireless Development Resources
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. You should get an echo back or an OK if your configured your modem not to echo. Therefore you could create a symlink post-fixed with -AT at the end.
By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Matt Aldridge 1, 11 I know that port 3 is always the AT command channel. Sign up using Facebook.
I use this script to get Data and Control ports for 3g usb dongle. In the case of Sierra Wireless modules they clearly show which port is which. A word of warning though. This works for me: