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Barix MA400



SIP link negotiation protocol based Codec for audio over IP transport

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The MA400 SIP Opus Stereo Encoder/Decoder enables remote contribution links with SIP and the high-quality, open audio format Opus in a cost-effective solution. The advantages of the royality-free Opus codec are its quality, efficiency and low latency. Combined with the SIP functionality to establish seamless links across VoIP and other IP based communications systems, it is ideal for remote contribution applications. The SIP functionality in the Barix unit allows to dial another device or auto replies to a call and automatically negotiate a transmission link for Opus based audio streaming.

Particularly interesting is the MA400 SIP Opus Stereo Encoder/Decoder for remote contribution back to the studio such as from sporting events. It combines Barix’ well know reliabilty in broadcast as well as in SIP-based telephony with the bandwidth efficiency of Opus, enabling easy, high-quality audio links to and from the studio. Barix SIP Opus solution family consists of the mic and line input / bi-directional mono MA400 SIP Opus Stereo Encoder/Decoder with PoE; the stereo decode only M400 SIP Opus Decoder as well as a forthcoming XLR based stereo versions, all allowing extremely cost-effective deployment.

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  • Main Features:
  • 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)
  • Specifications:
  • Electrical:
  • 802.3af PoE on RJ-45 connector
  • 48VDC nomimal, 12Watt max.
  • Ethernet:
  • 10/100Mbps autorate, full/half duplex
  • RJ-45connector withintegratedLink/Activity
  • LED:
  • 802.3af PoE support
  • Protocols: TCP/IP, UDP, RTP, DHCP, Multicast capable
  • Audio Input:
  • Characteristics/mode selectable by software:
  • “Mic” mode: tba, bias power for electret microphone supplied
  • “Line” mode: 2kΩ input impedance
  • 3.9 VPP max, adjustable in sensitivity
  • Frequency response 20 Hz .. 18 kHz (-3dB)*
  • Dynamic range 87 dB, SNR -87 dB, THD <0.1% (-3 dBFS)*
  • Mechanical:
  • Aluminumcase,280g
  • Dimensions 108 x38 x78.7 mm (4.25 x 1.5 x 3.1” inch)
  • rack and wall mountable using optional accessories MTBF
  • min. 500000h (accordingtoMIL217F at 25°C)
  • Analog Line Output (mono):
  • Transformer isolated, balanced (600 Ω)
  • Output level software controllable
  • Full scale output voltage: 5.7 dBu, 4.2 VPP, 4.7 dBm @ 600 Ω
  • Frequency response 30 Hz .. 18 kHz (-3dB)*
  • Dynamic range 88 dB, SNR -88 dB, THD
  • Speaker out:
  • • Suggested speaker impedance 8Ω (min.)
  • • 5 Watt max output power @ 8Ω
  • • Values @ 8Ω:
  • • Frequency response 25 Hz .. 12 kHz (-3dB)*,
  • • Dynamic range tba, SNR tba, THD <1% (-3dBFS)*
  • Supported Audio formats:
  • • OPUS
  • • G.711 (alaw ulaw)
  • • G.722
  • • GSM
  • • iLBC
  • • Sppex