SparkSIP Gateway

0.2

SparkSIP Gateway is the phone system of our Synology package on your Mac: Asterisk 21 and FreePBX 17 with a native Mac window for extensions, trunks, routes, switchboard and fax.

Not everyone has a Synology NAS. SparkSIP Gateway runs the same engine as the Asterisk PBX package (Debian 12, Asterisk 21, FreePBX 17, MariaDB) in a light Linux VM, using Apple’s open-source container runtime and Rosetta.

The Mac window covers what you need: extensions with a QR invitation for the SparkSIP app, trunks from your SIP provider, inbound and outbound routes, dialplan and voice menus, switchboard, fax, blocked numbers, TLS/SRTP encryption and backups. Phones connect to your Mac’s address.

Features

Engine

The Synology package’s phone system

Asterisk 21.10.2 and FreePBX 17, with the same bridge and settings as on the NAS. The engine ships inside the app: nothing else to download.

Extensions

Extensions and SparkSIP invitations

Create an extension and show its QR code: the SparkSIP app on Mac, iPhone or Android sets itself up, call archive and fax included.

Provider

Trunks and routes

Presets for Zadarma, OVH, Telnyx and Twilio; inbound routes per number and outbound routes per dial pattern.

Switchboard

Switchboard and voice menus

Who rings first, then the mobile or the answering machine; calls on the line live. Edit the dialplan and voice menus in the app.

Fax

Incoming and outgoing faxes

Receive on a fax extension, send through your trunk, keep a fax archive, just like on the NAS.

Security

TLS, SRTP and blocking

SIP over TLS and SRTP-encrypted voice, blocking of addresses that try wrong passwords, blocked numbers and backups.

What’s new

Version 0.2, 9 November 2026

First public release: the phone system of the Synology package (Asterisk 21 and FreePBX 17) on an Apple silicon Mac, with extensions, trunks, routes, switchboard, fax, blocked numbers, security and backups. The engine ships inside the app; Rosetta and Apple’s container runtime are installed from the app.

Installation

1
Download and drag
Open the DMG and drag SparkSIP Gateway into Applications. The app is signed with Developer ID and notarized by Apple.
2
Install the components
On first launch the Setup section installs Rosetta and Apple’s container runtime (macOS asks for your password).
3
Install the engine
Click “Install the engine”: FreePBX installs in a few minutes. Then add your extensions and your trunk.

Questions and answers

Which Macs?

A Mac with Apple silicon (M1 or later) and macOS 15 or later, 3 GB of free memory for the engine and about 5 GB of disk space.

What does the app download?

The signed installer of the container runtime from Apple’s official release on GitHub (checked before it opens), the Linux kernel Apple recommends and, on first start, the fax tools from Debian. Nothing is sent to the developer.

What about phones outside the office?

Enter your public address on the Network page and forward UDP 5060, UDP 10000–10199 and TCP 8443 on your router to the Mac.

How do I check the downloaded file?

In Terminal, run the command below and compare the result with the SHA-256 fingerprint on the right. If a single character differs, do not open the file and write to us.

shasum -a 256 ~/Downloads/SparkSIP-Gateway-0.2.dmg