Docker build for Asterisk including chan_quectel

What is it?

This is a Docker container including IchthysMaranatha/asterisk-chan-quectel. I use it with the Simcom SIM7600E modem hat for a Raspberry Pi 4 for forwarding SMS to email and calling using IAX to my main PBX running FreePBX.

Should also work with the Quectel EC25 and similar.

How do I configure Asterisk?

There are sample config files in /opt/asterisk-samples inside the container. Copy them to outside of the container and mount that to /etc/asterisk.

To handle incoming SMS, add to your incoming context to extensions.conf:

exten => sms,1,Verbose(Incoming SMS from ${CALLERID(num)} ${BASE64_DECODE(${SMS_BASE64})})
exten => sms,n,System(echo '${BASE64_DECODE(${SMS_BASE64})}' | python3 /opt/scripts/sms2email.py -c '${QUECTELNAME}' -n '${CALLERID(num)}' -d '${SMS_EMAIL_TARGET}')
exten => sms,n,Hangup()

How do I build it?

Use docker build -t asterisk-chan-quectel .

How do I run it?

docker run -d \
  --name asterisk \
  --volume ~/docker/asterisk/scripts/sms2email.conf:/opt/scripts/sms2email.conf \
  --volume ~/docker/asterisk/asterisk:/etc/asterisk \
  --network host \
  --device /dev/ttyUSB2:/dev/quectel0-data \
  --device /dev/ttyUSB4:/dev/quectel0-audio \
  --restart always \
  wildy/asterisk-chan-quectel:latest

Hardware

Keep in mind that the SIM7600E can consume up to 2.1A of current! This means, you'll need to power the Pi and the SIM7600E using the USB header on the hat itself - otherwises the Pi will turn the USB port off randomly.

The original RPi wall wart seems to work well with a USB-C to microUSB adapter.

Bugs

Lots.

• Port is hardcoded in modeminit.py
• modeminit.py doesn't check for any errors
• Asterisk build could (and should) be optimized
• Feel free to modify for running with more than one modem
• Probably doesn't handle international SMS very well

Contributing

Feel free to fork and modify, don't forget to share ;)