Open source components

Credits

Open source components

PhonixPBX stands on the shoulders of these projects. This list covers the major components shipped in the images; each one keeps its own license.

Operating system

The root file system of the disk images, LXC containers and the OCI image.

Component	License	Notes
Alpine Linux apk-tools and alpine-baselayout; every package keeps its own license	`GPL-2.0-only`	apk-tools and alpine-baselayout; every package keeps its own license
Linux kernel Disk images only (linux-lts, linux-rpi)	`GPL-2.0-only WITH Linux-syscall-note`	Disk images only (linux-lts, linux-rpi)
linux-firmware Broadcom and Realtek NIC firmware, disk images only	`Various, redistributable`	Broadcom and Realtek NIC firmware, disk images only
musl libc	`MIT`
BusyBox	`GPL-2.0-only`
OpenRC Disk images and LXC	`BSD-2-Clause`	Disk images and LXC
OpenSSL	`Apache-2.0`
tzdata	`Public domain`

Boot

Boot loaders of the disk images.

Component	License	Notes
GRUB PC images (UEFI and BIOS)	`GPL-3.0-or-later`	PC images (UEFI and BIOS)
Raspberry Pi firmware Raspberry Pi image	`Proprietary, redistributable`	Raspberry Pi image

Telephony

Component	License	Notes
Asterisk	`GPL-2.0-only`
PJSIP (pjproject) SIP stack, bundled with Asterisk	`GPL-2.0-or-later`	SIP stack, bundled with Asterisk
libSRTP	`BSD-3-Clause`
Opus	`BSD-3-Clause`
Speex	`BSD-3-Clause`
Asterisk sounds and music on hold	`CC-BY-SA-3.0`
SoX Conversion of uploaded audio files	`GPL-2.0-or-later`	Conversion of uploaded audio files

System services

Component	License	Notes
nginx TLS termination in front of the web application	`BSD-2-Clause`	TLS termination in front of the web application
lego Let's Encrypt / ACME certificates	`MIT`	Let's Encrypt / ACME certificates
nftables	`GPL-2.0-or-later`
chrony Disk images and LXC	`GPL-2.0-only`	Disk images and LXC
msmtp	`GPL-3.0-or-later`
Dropbear SSH Disk images and LXC	`MIT`	Disk images and LXC
OpenDoas	`ISC`
logrotate	`GPL-2.0-or-later`
Tini OCI image only	`MIT`	OCI image only

Web application

The PhonixPBX web application runs on Python and these libraries.

Component	License	Notes
Python	`PSF-2.0`
FastAPI	`MIT`
Starlette	`BSD-3-Clause`
Uvicorn	`BSD-3-Clause`
Pydantic	`MIT`
SQLite	`Public domain`
SQLAlchemy	`MIT`
Alembic	`MIT`
Jinja	`BSD-3-Clause`
itsdangerous	`BSD-3-Clause`
argon2-cffi	`MIT`
python-multipart	`Apache-2.0`
Babel	`BSD-3-Clause`
defusedxml	`PSF-2.0`
cryptography	`Apache-2.0 OR BSD-3-Clause`
python-zstandard	`BSD-3-Clause`
HTTPX	`BSD-3-Clause`

Web interface

Front-end libraries bundled with the web interface.

Component	License	Notes
Tabler	`MIT`
Tabler Icons	`MIT`
htmx	`0BSD`
uPlot	`MIT`
Tom Select	`Apache-2.0`
Dropzone	`MIT`
IMask	`MIT`
Autosize	`MIT`
SortableJS	`MIT`

PhonixPBX itself is released under the Apache-2.0 license; see NOTICE for the files that keep their own licenses. The complete package list of every image is published with each release as phonix-<version>-<board>.packages.