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For testing purposes I use the cu program – cu – Call up another system. Fortunately there are internal leaked documents on the internet so I was able to find the ZTE command set by with Google. In reality it is not so straightforward to get a list of those commands since for 3g dongles there is no official documentation (at least for those I have). #HOW DO I SEND AN SMS WITH THE ZTE MF65 SERIAL#What this means is that while you establish connection using the /dev/gsmmodem the others are free and can be opened and used to send AT commands to the modem.īut what are AT commands? The AT (meaning ‘attention’) commands are simple instructions send to the modem over a serial link telling it what to do – dial a number, hang up, send message, etc. For more information: Wikipedia. In my case these are /dev/ttyUSB0, ttyUSB1 and ttyUSB2, with additional symbolic link /dev/gsmmodem pointing to ttyUSB2. Once you have the 3g dongle connected as a modem three new devices will appear under /dev.
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