Smart pi SIP Server – Version 1.2.1

Posted on July 25th, 2026

Released: July 2026

Recommended update: We strongly recommend that all users upgrade to this version.

The Smart pi SIP Server is a specialised SIP bridge designed to connect audio sources to SIP networks in a fully bi-directional manner. It functions as a high-performance audio-to-SIP gateway, making it ideal for professional public address, paging, announcement, intercom and broadcast-style applications.

Requirement: .NET 10 is required for this application.

Key Technical Features

  • Platform: Built on the .NET 10 platform.
  • OS support: Runs on both Windows and Linux.
  • Audio support: Physical soundcards via ALSA (Linux), ASIO and WDM (Windows). Virtual soundcards are also supported, including AES67 and Dante for seamless integration with modern networked audio systems.
  • Channel capacity: Licensable up to 512 channels.
  • Codecs: Supports Opus (high quality, low bandwidth) and PCM formats.
  • Call handling: Fully bi-directional audio streaming, with Auto Answer and Auto Dial capabilities.
  • Protocols & interfaces: AES70 support; a comprehensive REST API for control, monitoring and automation; tight integration with Smart pi DVA (Digital Voice Announcement).
  • Management: Web-based GUI with full monitoring capabilities.

Relationship with Smart pi PBX

The Smart pi PBX is a separate Asterisk-based PBX that provides full telephony features (extensions, call routing, trunks, etc.).

The Smart pi SIP Server acts as a dedicated SIP audio bridge, complementing the PBX by efficiently handling audio interfacing and conversion between soundcards (physical or virtual) and SIP.

Deployment Options

The SIP Server can be deployed standalone as a pure audio-to-SIP bridge or fully integrated into the Smart pi ECOsystem, working seamlessly with other components such as Smart pi DVA, Smart pi DVA GTFS, Smart pi DSP, Smart pi NAM/SIP, Smart pi NAM/Auracast and Smart pi HLP (and other endpoints).

This modular design offers excellent flexibility, scalability and audio quality while supporting open standards and networked audio technologies like Dante and AES67.

Downloads

If you have any issues or feedback, please let us know through the service portal.

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