Making phone calls

[PinePhoneCoder]

I am trying to get the phone part of the PinePhone working, what I wrote here is what I tried, however I did not succeed yet and I hope you can help me with it.

I use this as a guideline:

https://megous.com/dl/tmp/modem.txt

For the mixer it is written:

1) alsamixer

- set "Line Out Source" to "Mono Differential"
- Unmute "AIF1 Slot 0 Digital DAC"
- (optional) unmute the microphone / mute loudpeaker

And I tried to do that in bash

Code:

# Enable audio
sudo modprobe snd_soc_simple_amplifier
sudo modprobe snd_soc_simple_card_utils

# Unmute audio
amixer -c 0 set 'AIF1 Slot 0 Digital DAC' unmute

# Mute speaker (audio will loop otherwise trough the speaker and mic, terrible noise!!)
amixer -c 0 set 'Line Out' mute

# Unmute the ear speaker? (not sure)
amixer -c 0 set 'Earpiece' unmute

# Open microphone
amixer -c 0 set 'Mic1' unmute

# Set volume
amixer sset 'Line Out'  0%
amixer sset 'Earpiece' 100%
amixer sset 'Mic1' 100%

# Set mono
amixer sset 'Line Out Source' 'Mono Differential'

Next is how to send AT commands to the modem?

If I run the following command I get the modem device name and information:

Code:

/usr/share/ofono/scripts/list-modems

And I want to run something like:

Code:

sudo echo "AT+QTTS=2,\"Welcome to use the module of QUECTEL" > /quectelqmi_0

But /quectelqmi_0 needs do be a device file and it is not I guess.

Who want to help me out here?

Thank you in advance!