This is a experimental docker image to stack:
This stack create a virtual pabx with four internal phone number
docker-compose up --detach
| user | passwd | domain |
|---|---|---|
| 7001 | 7001 | ip from you server |
| 7002 | 7002 | ip from you server |
| 7003 | 7003 | ip from you server |
| 7004 | 7004 | ip from you server |
I use microsip softphone to make a internal call between internal's.
I use this configurations:
see the file docker-compose.yml

