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Author Topic: PPP & LTE cards: How to access AT commands once interface is up?  (Read 1912 times)

ktk

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PPP & LTE cards: How to access AT commands once interface is up?
« on: September 30, 2018, 12:41:32 pm »
I'm setting up a PC Engines based GW for my second home in Asia, which will run on LTE connection. So far so good, I seem to get an IP and now I start playing with my Sierra Wireless card to figure out how to optimize it.

Main issue I have is that as soon as my PPP connection is up, I cannot connect to /dev/cuaU0.2 anymore, as the device is busy. Is there a way that the PPP connection can be up but at the same time I can check & change stuff on my PPP card using specific AT commands? In particular I want to figure out on what LTE band I am, what the antenna settings are etc. All stuff I can do as long as the PPP connection is not up.

Also I did not really figure out what process is doing the PPP connection in OPNsense, how/where is that done?
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muchacha_grande

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Re: PPP & LTE cards: How to access AT commands once interface is up?
« Reply #1 on: September 30, 2018, 05:57:49 pm »
It should appears other devices such as /dev/cuaU0.1 and /dev/cuaU0.0 on which you can access and use AT commands.

Usually most modems create more than one port to monitor while connected to Internet.
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ktk

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Re: PPP & LTE cards: How to access AT commands once interface is up?
« Reply #2 on: October 31, 2018, 06:58:30 pm »
Thanks, I went through all the remaining devices (there are 4) but none of them seems to react on AT, I never get an OK back. Except the one I configured as device, which is obviously busy now.

Any other ideas?
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