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55 lines
4.6 KiB
ReStructuredText
==========
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PBX README
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==========
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This "pbx" playbook adds `Asterisk <https://asterisk.org/>`_ and `FreePBX <https://freepbx.org/>`_ to Internet-in-a-Box (IIAB) for VoIP and SIP functionality e.g. for rural telephony.
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The initial release (for IIAB 6.7 in February 2019) supported Ubuntu 18.04, Debian 9 "Stretch" — and experimentally, Raspberry Pi: `#1467 <https://github.com/iiab/iiab/issues/1467>`_
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*2021-08-02 GOOD NEWS: IIAB has upgraded from Asterisk 16.x (released 2018-10-09) to 18.x (released 2020-10-20*, `docs <https://wiki.asterisk.org/wiki/display/AST/Asterisk+18+Documentation>`_): `PR #2896 <https://github.com/iiab/iiab/pull/2896>`_
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*2021-08-02 WORK IN PROGRESS: The latest versions of Ubuntu (20.04, 20.10, 21.04), Debian 11 "Bullseye" and the imminent Raspberry Pi OS 11 "Bullseye" all include PHP 7.4 — which does not work with FreePBX 15 — so we're now making the transition to FreePBX 16 whose Beta emerged on 2021-06-21:* `#2897 <https://github.com/iiab/iiab/issues/2897#issuecomment-891371536>`_, `PR #2899 <https://github.com/iiab/iiab/pull/2899>`_
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What Asterisk & FreePBX Do
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--------------------------
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Asterisk is a software implementation of a private branch exchange (PBX). In conjunction with suitable telephony hardware interfaces and network applications, Asterisk is used to establish and control telephone calls between telecommunication endpoints, such as customary telephone sets, destinations on the public switched telephone network (PSTN), and devices or services on Voice over Internet Protocol (VoIP) networks. Its name comes from the asterisk (*) symbol for a signal used in dual-tone multi-frequency (DTMF) dialing.
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FreePBX is a web-based open source GUI (graphical user interface) that controls and manages Asterisk (PBX), the open source communication server.
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Using It
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--------
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Prior to installing IIAB, make sure your `/etc/iiab/local_vars.yml <http://wiki.laptop.org/go/IIAB/FAQ#What_is_local_vars.yml_and_how_do_I_customize_it.3F>`_ contains::
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pbx_install: True
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pbx_enabled: True
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Optionally, you may want to enable `chan_dongle <https://github.com/wdoekes/asterisk-chan-dongle>`_, which is a channel driver for Huawei UMTS cards allowing regular voice calls over GSM. You will need to configure a dongle post-install, for it to be recognized properly::
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asterisk_chan_dongle: True
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After installing PBX as part of IIAB, please visit http://box.lan:83/freepbx and proceed with initial configuration (no login/password is required initially — you will be asked to set this up).
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You can monitor the FreePBX service with command::
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systemctl status freepbx
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Raspberry Pi Known Issue
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------------------------
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As of 2019-02-14, "systemctl restart freepbx" failed more than 50% of the time when run on a `BIG-sized <http://wiki.laptop.org/go/IIAB/FAQ#What_services_.28IIAB_apps.29_are_suggested_during_installation.3F>`_ install of IIAB 6.7 on RPi 3 or RPi 3 B+.
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It is possible that FreePBX restarts much more reliably when run on a MIN-sized install of IIAB? Please `contact us <http://wiki.laptop.org/go/IIAB/FAQ#What_are_the_best_places_for_community_support.3F>`_ if you can assist here in any way: `#1493 <https://github.com/iiab/iiab/issues/1493>`_
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Raspberry Pi Zero W Warning
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---------------------------
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Node.js applications like Asterisk/FreePBX, Node-RED and Sugarizer won't work on Raspberry Pi Zero W (ARMv6) if you installed Node.js while on RPi 3, 3 B+ (ARMv7) or RPi 4 (ARMv8). If necessary, run ``apt remove nodejs`` or ``apt purge nodejs`` then ``rm /etc/apt/sources.list.d/nodesource.list; apt update`` then (`attempt! <https://nodered.org/docs/hardware/raspberrypi#swapping-sd-cards>`_) to `install Node.js <https://github.com/iiab/iiab/blob/master/roles/nodejs/tasks/main.yml>`_ *on the Raspberry Pi Zero W itself* (a better approach than "cd /opt/iiab/iiab; ./runrole nodejs" is to try ``apt install nodejs`` or try installing the tar file mentioned at `#2082 <https://github.com/iiab/iiab/issues/2082#issuecomment-569344617>`_). You might also need ``apt install npm``. Whatever versions of Node.js and npm you install, make sure ``/etc/iiab/iiab_state.yml`` contains the line ``nodejs_installed: True`` (add it if nec!) Finally, proceed to install Asterisk/FreePBX, Node-RED and/or Sugarizer. `#1799 <https://github.com/iiab/iiab/issues/1799>`_
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Please also check the "Known Issues" at the bottom of `IIAB's latest release notes <https://github.com/iiab/iiab/wiki#our-evolution>`_.
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Attribution
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-----------
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This "pbx" playbook was heavily inspired by Yannik Sembritzki's `Asterisk <https://github.com/Yannik/ansible-role-asterisk>`_ and `FreePBX <https://github.com/Yannik/ansible-role-freepbx>`_ Ansible work, Thank You!
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