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If you want to keep you modem online so you can recieve calls, then keep both terminals open You should now hear sound from your speakers and you can also speak into theĪfter you are done with your call, you can hangup with: AT+CHUP Go back to the first terminal and dial the number: ATDxxxxxxxxxx įrom the same dialogue terminal he route audio: AT^DDSETEX=2 The audio sampleformat, S16_LE is 'Signed 16 bit Little Endian', Rate 8000 Hz, Mono it depends on the response from AT^CVOICE? other modems may require S16_BE

Open another terminal and enable microphone: Open another terminal and enable audio: sudo cat /dev/ttyUSB1 | aplay -f S16_LE The -c means local echo on, making AT commands visible as you typeįind the audio sample formats supported by your modem: AT^CVOICE?Ī reponse of 0,8000,16,10 means the rate is 8000hz Usually, the dialogue port (ie 1st port) is /dev/ttyUSB0, audio port (ie 2nd port) is /dev/ttyUSB1 and sms & internet aka data port (ie 3rd port) is /dev/ttyUSB3 insert your dongle into pc and should be detected by Network manager appletĢ.Find out the various ports of the modem: ls /dev/ttyU*.I assume that your modem has voice capabilities and could make call on Mobile Partner in Windows This is how i made phone call from my Huawei modem K3772 on Ubuntu zesty using AT commands.Voice is working and i can also recieve call.