Install

• Run make to build the Docker image.
• Copy etc/accounts.example to etc/accounts and fill in proper SIP account.
• Replace etc/message.mp3 with the message you want to play.

Run

• Run ./run.sh in one terminal to start the a Docker container instance. This exposes port 8080 on the host, so it can be controlled via dial.sh.
• Run ./dial.sh 012345 10 30 in another terminal to ring 012345 for 10s and then play etc/message.mp3 for 30s.

To call a list of numbers sequentially, create a file like this:

cat /tmp/numbers.txt
01234567890
01234567891
01234567892
01234567893
01234567894
01234567895
01234567896
01234567897
01234567898
01234567899

Then call them one by one by executing for num in $(cat /tmp/numbers.txt); do ./dial.sh $num 10 30; done.

• If calls happen to fail because they take longer than 5s to get into ringing state, increase the failed_threshold variable and your ring-timeout cmd line parameter in dial.sh.

Notes

• Failures while connecting calls (busy, rejects etc) as well as remote hangups are supposed to be handled gracefully.
• You can currently only do one call per container. To parallelize, run more containers while incrementing the exposed httpd port in run.sh and dial.sh

Disclaimer

Desperate times call for desperate measures, and this is one of them. Don't abuse this tool. Слава Україні!