Barix MA400 SIP Opus Codec Automatic Link Negotiation Audio over IP Transport

Automatic link negotiation for high quality audio over IP transport.
The cost-effective SIP Opus Codecs combine the ease of SIP-based link establishment with the efficiency of the 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. The Barix devices dial another device and accept an incoming call automatically to negotiate a transmission link for Opus-based audio streaming. 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.

Key Features

• Bi-directional mono Opus, G.711, G.722 codec
• Microphone / line level input
• Support of multiple coding standards
• Line level output (balanced)
• Amplified output 5W (8 Ohm)
• USB sound card support
• Contact input (call control)
• Power over Ethernet (PoE)
• SNMP support (v2)

Technical Specifications

Electrical
802.3af PoE on RJ-45 connector
48 VDC nominal, 12-Watt max.
Ethernet
10/100Mbps auto rate, full/half duplex
RJ-45 connector with integrated Link/Activity
802.3af PoE support
rack and wall mountable using optional accessories
Audio Input (mono)
Characteristics/mode selectable by software
“Mic” mode: 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) *
Headphone output
Female Jack 3.5 mm
USB
Double USB connector type A female. USB sound card
support for audio I/O (see list of tested devices in
Firmware Release Note V1.3.3)
RS-232
For serial TCP gateway
Contact input
1 discrete / dry contact input
Mechanical
Aluminum case, 280g
Dimensions 108 x 38 x 78.7 mm
(4.25 x 1.5 x 3.1” inch)
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) *
Speaker out
Suggested speaker impedance 8Ω (min.)
5-Watt max output power @ 8Ω
Values @ 8Ω
Frequency response 25 Hz. 12 kHz (-3dB) *,
Supported Audio formats
OPUS
G.711 (alaw ulaw) G.722
G.722
GSM
iLBC
Speex
MTBF
min. 500 000h (according to MIL217F at 25 Degrees C
Environmental
Operating Environment
0 to +50 Degrees C / 32 to 122 Degrees F
0 - 70% relative humidity, non-condensing
Storage Conditions
-20 to +70 Degrees C / -4 to 158 Degrees F
0 - 70% relative humidity, non-condensing
Certifications
CE, RoHS, FCC