IP Audio Client Firmware
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Annuncicom MPI400

Intercom / Paging device with contact closure inputs, relay outputs, Line and Mic / Speaker support.

The Annuncicom MPI400 is a versatile Audio over IP device designed to serve as an end point or gateway between IP based intercom (VoIP/SIP or streaming) and traditional paging/intercom systems, microphone/speakers or an amplifier. The modern, robust & powerful hardware/software architecture provides a future proof platform that meets modern internet security requirements and can easily be adapted to individual customer needs. A wide variety of audio environments, such as Dante ®, SIP, InformaCast and Syn-Apps are supported. Codecs include PCM, AACplus, MP3, OPUS, G.711, G.722 that can be streamed using HTTP and RTP. Audio files can be stored on the internal memory and their playback can be triggered via a simple UDP command or scheduled. Thanks to the priority handler, the Annuncicom MPI400 can be configured to switch between sources according to one of the five priority settings and therefore eliminates the need for an audio matrix device.

CPU / Memory

  • Barix IPAM400 Processor Module
  • Quad-Core ARM CortexTM -A7
  • 256 MB DDR3 SDRAM
  • 16 MB SPI Flash

Operating System

  • Embedded Linux based on Yocto

Power interface

  • 24 VDC, +/- 20%, 12 Watt max.
    on detach. screw terminal block
  • IEEE 802.3af PoE

Network interface

  • 10/100Mbps auto-sensing
  • RJ-45 connector with integrated Link /Activity LED
  • IPv4/IPv6 capable


  • TCP/IP, HTTP, UDP, RTP, SIP, DHCP, Multicast capable
  • Dante ® Support – Requires extra license
  • Singlewire InformaCast compatibility – requires extra license
  • SynApps Revolution compatibility

USB Interface

  • 2x USB 2.0 type A interfaces
Discrete I/O

On detach. screw terminal block:

  • 1x Normally open relay 30V 0.5A
  • 1x Normally closed relay 30V 0.5A
  • 2x digital dry contact inputs

Audio input interfaces

On detach. screw terminal block:

  • Line level input +4dBu max, mono, unbalanced
  • Microphone input, balanced, 18V phantom powered
  • Microphone input, electret, unbalanced, 2.1V bias

Audio Output interfaces

On detach. screw terminal block:

  • Audio output (mono), suitable to drive a speaker or a balanced output (exclusive output).Speaker: 1W @8ohms
    Line out: symmetric/balanced,
    non-isolated, with DC offset, 10dBu (unbalanced: 4dBu)volume level software controlled
  • 3.5mm headphone output
IP Audio formats

  • FDX/HDX SIP client support
  • HTTP(S) and (S)RTP Streaming
  • Large variety of codecs can be supported (e.g. MP3, PCM, G.711, G.722, AAC+, OPUS)

User Interface

  • Web interface for configuration
  • 2 x Multicolor LED Status indicators
  • Reset & Factory Defaults Button


  • Aluminum case, 265 g
  • Dimensions 108 x 38 x 78.7mm
    (4.25 x 1.5 x 3.1 inch) rack and wall mountable using accessories


  • Two years

Annuncicom MPI400 (Made in Europe)

2021.9330P MPI400 PoE Package


Annuncicom MPI400 Singlewire’s Informacast license

2022.9372P InformaCast Package (must be ordered with InformaCast License)

2019.3160 InformaCast License (must be ordered with device)


Annuncicom MPI400 Dante®

2023.9413P Annuncicom MPI400 Dante® – Including Dante® license


Annuncicom MPI400 Dante® + InformaCast – Including Dante® license + Singlewire’s InformaCast license

2023.9414P Annuncicom MPI400 Dante® + InformaCast



2011.5032 Accessories Power supply 24VDC

2006.9072 Accessories Wall mount bracket

2007.9082 Accessories 19“ Rack mount

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