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SIP Opus Codec

SIP link negotiation protocol based Codecs for audio over IP transport.

The cost-effective new MA400 and M400 SIP Opus Codecs combine the dynamic flexibility and ease of SIP-based link establishment with the quality and efficiency of the open Opus audio compression format. The SIP Opus Codec devices encode or decode audio signals using the open standard Opus codec, a royalty-free audio compression format known for exceptional quality and reliability in interactive speech and music transmission over the Internet. 

The devices build on the Opus codec’s quality, efficiency and low latency with SIP functionality to establish seamless links across SIP-compatible telephone or other IP-based communications systems. Ideal for remote contribution applications, the SIP functionality in the Barix units enables them to dial another device or accept an incoming call and automatically negotiate a transmission link for Opus-based audio streaming. In addition to remote broadcast links, the SIP Opus Codecs offer a reliable, high-quality solution for studio-to-studio (SSL) and studio-to-transmitter (STL) applications at cost-efficient pricing.

Built on Barix’s latest-generation, high-performance IPAM 400 audio module, the SIP Opus Codec devices are available in two powerful models. The mono, bi-directional MA400 SIP Opus Codec is powered by PoE and features analog microphone or line-level input and 5W 8-ohm or line-level output. Meanwhile, the stereo, externally powered M400 SIP Opus Codec can be configured as either an encoder or a decoder, and offers line-level analog input or output with RCA connections. The M400 also supports directly connected USB microphones. Both models support audio level supervision with SNMP trap generation and interoperate easily with third-party SIP-compliant, Opus-compatible products.

Supported Codecs

Excellent for Remote Contribution

  • Bi-directional mono Opus codec
  • Microphone / line level input
  • Audio level supervision with SNMP trap generation
  • Support of multiple coding standards
  • Line level output (balanced)
  • Amplified output 5W (8 Ohm)
  • Power over Ethernet (PoE)

Choose your device

M400 SIP Opus Encoder/Decoder

  • Line level input (RCA)
  • Line level output (RCA)
  • RS232 for tunneling
  • 2x USB ports
  • External Power Supply

MA400 SIP Opus Codec

  • Bi-Directional
  • Microphone /line level input
  • 5 Watt 8Ohm or Line level output
  • RS232 for tunneling
  • Power over Ethernet (PoE)

SIP Opus Codec Installation

Use Cases

The SIP Opus Codec is perfect for remote contribution, STL and SSL.

SIP based Studio to Transmitter link

Live audio codec for sports or event contribution

SIP based Studio to Studio Link

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Ordering Numbers

  • 2019.9260

    MA400 SIP Opus Codec (PoE)

  • 2019.9263

    M400 SIP Opus Enc/Dec EU Package

  • 2019.9264

    M400 SIP Opus Enc/Dec US Package

  • 2019.9265

    M400 SIP Opus Enc/Dec UK Package

  • 2019.9266

    M400 SIP Opus Enc/Dec NoPSU Package

Documents & Downloads


SIP OPUS Firmware 1.3.1