Firstly PBX is an acronym for Private Branch Exchange. FreePBX is basically a phone system that you can install on your virtual machine . It plays an important role in managing asterisk . What is asterisk? Simply put a communication server and is open sourced. Instead of using their own phone system and interface and paying an optimum 100 dollars a month, users can use FreePBX to manage their PBX.

Asterisk allows us to convert an ordinary computer to a communication server using . It is a software implementation of a telephone private branch exchange (PBX), allowing connected telephones to call each other and then connect to other telephone services such as the public switched telephone network ( PSTN ) and Voice over Internet Protocol ( VoIP ) services.

Version table: 5:20.10.17~3-0~ubuntu-focal 500 500 https://download.docker.com/linux/ubuntu focal/stable amd64 Packages 5:20.10.16~3-0~ubuntu-focal 500 500 https://download.docker.com/linux/ubuntu focal/stable amd64 Packages 5:20.10.15~3-0~ubuntu-focal 500 500 https://download.docker.com/linux/ubuntu focal/stable amd64 Packages 5:20.10.14~3-0~ubuntu-focal 500 500 https://download.docker.com/linux/ubuntu focal/stable amd64 Packages 5:20.10.13~3-0~ubuntu-focal 500 500 https://download.docker.com/linux/ubuntu focal/stable amd64 Packages 5:20.10.12~3-0~ubuntu-focal 500 500 https://download.docker.com/linux/ubuntu focal/stable amd64 Packages ● docker.service - Docker Application Container Engine Loaded: loaded (/lib/systemd/system/docker.service; enabled; vendor preset: enabled) Active: active (running) since Sun 2022-09-04 16:04:27 UTC; 13s ago TriggeredBy: ● docker.socket Docs: https://docs.docker.com Main PID: 3264 (dockerd) Tasks: 7 Memory: 29.8M CGroup: /system.slice/docker.service └─3264 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock Sep 04 16:04:27 ubuntu2004 dockerd[3264]: time="2022-09-04T16:04:27.555173170Z" level=warning msg="Your kernel does not support CPU realtime > Sep 04 16:04:27 ubuntu2004 dockerd[3264]: time="2022-09-04T16:04:27.555196177Z" level=warning msg="Your kernel does not support cgroup blkio > Sep 04 16:04:27 ubuntu2004 dockerd[3264]: time="2022-09-04T16:04:27.555270124Z" level=warning msg="Your kernel does not support cgroup blkio > Sep 04 16:04:27 ubuntu2004 dockerd[3264]: time="2022-09-04T16:04:27.555772301Z" level=info msg="Loading containers: start." Sep 04 16:04:27 ubuntu2004 dockerd[3264]: time="2022-09-04T16:04:27.719676988Z" level=info msg="Default bridge (docker0) is assigned with an > Sep 04 16:04:27 ubuntu2004 dockerd[3264]: time="2022-09-04T16:04:27.804973724Z" level=info msg="Loading containers: done." Sep 04 16:04:27 ubuntu2004 dockerd[3264]: time="2022-09-04T16:04:27.834543443Z" level=info msg="Docker daemon" commit=a89b842 graphdriver(s)=> Sep 04 16:04:27 ubuntu2004 dockerd[3264]: time="2022-09-04T16:04:27.834895532Z" level=info msg="Daemon has completed initialization" Sep 04 16:04:27 ubuntu2004 systemd[1]: Started Docker Application Container Engine. Sep 04 16:04:27 ubuntu2004 dockerd[3264]: time="2022-09-04T16:04:27.878373838Z" level=info msg="API listen on /run/docker.sock" #### If you aren't using a reverse proxy - 80:80 #### If you want SSL Support and not using a reverse proxy #- 443:443 - 5060:5060/udp - 5160:5160/udp - 18000-18100:18000-18100/udp #### Flash Operator Panel - 4445:4445 volumes: - ./certs:/certs - ./data:/data - ./logs:/var/log - ./data/www:/var/www/html ### Only Enable this option below if you set DB_EMBEDDED=TRUE #- ./db:/var/lib/mysql ### You can drop custom files overtop of the image if you have made modifications to modules/css/whatever - Use with care #- ./assets/custom:/assets/custom environment: - VIRTUAL_HOST=hostname.example.com - VIRTUAL_NETWORK=nginx-proxy ### If you want to connect to the SSL Enabled Container #- VIRTUAL_PORT=443 #- VIRTUAL_PROTO=https - VIRTUAL_PORT=80 - ZABBIX_HOSTNAME=freepbx-app - RTP_START=18000 - RTP_FINISH=18100 ## Use for External MySQL Server - DB_EMBEDDED=FALSE ### These are only necessary if DB_EMBEDDED=FALSE - DB_HOST=freepbx-db - DB_PORT=3306 - DB_NAME=asterisk - DB_USER=asterisk - DB_PASS=asteriskpass ### If you are using TLS Support for Apache to listen on 443 in the container drop them in /certs and set these: #- TLS_CERT=cert.pem #- TLS_KEY=key.pem restart: always networks: - proxy-tier ### These final lines are for Fail2ban. If you don't want, comment and also add ENABLE_FAIL2BAN=FALSE to your environment cap_add: - NET_ADMIN privileged: true freepbx-db: container_name: freepbx-db image: tiredofit/mariadb restart: always volumes: - ./db:/var/lib/mysql environment: - MYSQL_ROOT_PASSWORD=password - MYSQL_DATABASE=asterisk - MYSQL_USER=asterisk - MYSQL_PASSWORD=asteriskpass networks: - proxy-tier freepbx-db-backup: container_name: freepbx-db-backup image: tiredofit/db-backup links: - freepbx-db volumes: - ./dbbackup:/backup environment: - ZABBIX_HOSTNAME=freepbx-db-backup - DB_HOST=freepbx-db - DB_TYPE=mariadb - DB_NAME=asterisk - DB_USER=asterisk - DB_PASS=asteriskpass - DB_DUMP_FREQ=1440 - DB_DUMP_BEGIN=0000 - DB_CLEANUP_TIME=8640 - COMPRESSION=BZ - MD5=TRUE networks: - proxy-tier restart: always networks: proxy-tier: external: name: nginx-proxy <xmp>Pulling freepbx-db (tiredofit/mariadb:)... latest: Pulling from tiredofit/mariadb 59bf1c3509f3: Pull complete e887546d6053: Pull complete 3dace326c0ec: Pull complete ea97c706ca03: Pull complete f908583427a3: Pull complete Digest: sha256:9a2b1332bc6b0775765d8ae43e94646d4f5b97d2c5af4d246ab82042241f1517 Status: Downloaded newer image for tiredofit/mariadb:latest Pulling freepbx-db-backup (tiredofit/db-backup:)... latest: Pulling from tiredofit/db-backup 213ec9aee27d: Pull complete 0a34d2f2b45d: Pull complete 4dd70801aef3: Pull complete f471a1502016: Pull complete bdd9d308f2cc: Pull complete Digest: sha256:0a49053ee9164087696bf646a453de194debb652bb654e4452c75efa4b1c6661 Status: Downloaded newer image for tiredofit/db-backup:latest Creating freepbx-db ... done Creating freepbx-app ... done Creating freepbx-db-backup ... done <xmp>REPOSITORY TAG IMAGE ID CREATED SIZE tiredofit/db-backup latest fbb26eb96e30 2 weeks ago 521MB tiredofit/mariadb latest 158d51d45d6f 6 months ago 420MB tiredofit/freepbx latest e98ede842e6d 17 months ago 2.05GB CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES bb06e45b3ddd tiredofit/db-backup "/init" 37 seconds ago Up 37 seconds 2020/tcp, 10050/tcp freepbx-db-backup e7d8d9dbd2d1 tiredofit/freepbx "/init" 39 seconds ago Up 33 seconds 80/tcp, 443/tcp, 4569/tcp, 0.0.0.0:5060->5060/udp, :::5060->5060/udp, 5061/tcp, 5161/tcp, 8001/tcp, 8003/tcp, 8008-8009/tcp, 8025/tcp, 0.0.0.0:5160->5160/udp, :::5160->5160/udp, 10050/tcp, 0.0.0.0:4445->4445/tcp, :::4445->4445/tcp, 0.0.0.0:18000-18100->18000-18100/udp, :::18000-18100->18000-18100/udp, 18101-20000/udp freepbx-app c60189d931bf tiredofit/mariadb "/init" 39 seconds ago Up 37 seconds 2020/tcp, 3306/tcp, 10050 tcp freepbx-db

In this post, we explained how to build and run FreePBX using the Docker and Docker Compose . You can now host your own telephone system in your organizations. Summarizing FreePBX makes it easier for us by providing with pre programmed features available through a user friendly web interface that allows us to have a fully functional PBX almost instantly with no programming required.