Comrex BRIC-Link Classic Broadcast Audio Over IP Digital AAC Opus Codec SIP

( 235821207266) )

$1,088.00 ~~$1,569.00~~ (1 available in stock)

Tested/Guaranteed • Good Condition • Fully Working • 2-Channel Duplex Broadcast Audio Over IP Endpoint • AAC, HE-AAC, Opus, FLAC Wideband Codecs

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A lightly used, fully working broadcast codec for sending program material over the internet with minimal loss in quality. The Opus codec is supported as well as SIP signalling enabling you to use a variety of soft client applications from mobile and fixed contributing locations. The unit has been upgraded to the latest firmware at the time of listing. It has been tested to confirm that it works as it should. A matched 115/230V Auto power supply is included. The unit has been set to the factory defaults of address assignment via DHCP and web interface log in admin:comrex. Further details may be obtained from the user manual at https://www.prostudioconnection.net/2308/BRIC-Link-Classic-Manual.pdf, and other support documents at https://www.comrex.com/resources/bric-link/ . The photos show the actual item for sale.

Description

The Comrex BRIC-Link is a low-cost, high-performance solution for audio-to-IP conversion. Leveraging many of the core technical aspects of Comrex’s successful remote broadcast BRIC-Link product line, the BRIC-Link provides for an elegant way of moving Linear or compressed audio with very low delay. BRIC-Link may be used over a range of IP links, is very simple to use, and doesn’t require the expense of more full-featured codecs. While it carries an entrylevel cost, BRIC-Link maintains superb audio specifications and hardware reliability, making the system suitable for STLs and other mission-critical functions.

BRIC-Link is contained in a small desktop package. Two BRIC-Links may be installed to occupy 1U of rack space.

Applications

BRIC-Link is uniquely suited to point-to-point “nailed up" high-quality audio links over a variety of data networks, like ISM band IP radios, T1s, satellite channels, WANs, and LANs. The robustness of the BRIC technology (Broadcast Reliable Internet Codec) used in the box allows the system to perform well on the public Internet as well (using AAC or Opus compression modes)

Audio Coding

For users concerned about delay and coding artifacts, the BRIC-Link offers a robust stereo or mono Linear mode that does not compress audio. In addition, unique to real-time audio codecs, BRIC-Link offers FLAC lossless compression, reducing network throughput by 30-40% with absolutely transparent coding and no tandem coding concerns. For situations where more reduced bandwidth is desired, the BRIC-Link offers AAC/HE-AAC modes as standard, allowing superb audio quality at dramatically reduced data rates. For compatibility with mobile phone and web apps, BRIC-Link also implements Opus audio compression, along with VoIP standards G.722 and G.711.

Transmission Modes and Delay

BRIC-Link is a true codec, offering a full-duplex stereo encoder and decoder in each box. When two-way transmission is not required, the reverse channel may be disabled. The BRIC technology incorporated includes a jitter buffer manager that automatically balances delay and stability, dynamically increasing and decreasing delay based on network performance. For networks where the QoS is known, these parameters may be set so that a consistent level of jitter buffer is maintained. End-to-end coding delay in Linear modes is less than 25mS. FLAC and Opus modes are less than 30mS. AAC modes incorporate around 100mS total end-to-end delay, and HE-AAC modes deliver around 220mS. In addition to coding delay, network propagation and jitter buffers will add delay to any IP link and are network dependent.

Switchboard Server

Switchboard is an optional upgrade to BRIC-Link. It’s a feature that allows the codec to “sync" with a cloud-based server. Switchboard allows for easy connections to be made between codecs without any knowledge of IP addresses on either end of the link. It also provides presence and status information about all the Comrex codecs in your fleet, and can help make some connections through routers and firewalls that might be difficult otherwise. Switchboard is enabled by applying a license key (provided by Comrex) to the Web-based Interface of the BRICLink.

CrossLock

Firmware version 4.0 and higher offers a reliability feature called CrossLock. This is an entirely new transport layer that adds the following features: • Error Correction (ARQ and FEC) • Enhanced statistics and diagnostics Use of CrossLock is optional, and requires a Comrex codec running firmware 4.0 or higher on each end of the link. CrossLock connections can be made via the Comrex Switchboard function (see previous section) or manually. For manual connections, CrossLock requires extra settings to assure connections are only made within your known group of codecs. NOTE: CrossLock is not supported when using Linear PCM or FLAC algorithms.

Additional Features

BRIC-Link provides for four end-to-end contact closures to be delivered along with the audio stream in each direction. Alternately, the contact closure inputs may be configured to initiate connections. An ancillary data stream is available via RS232 along with the audio stream. The system is capable of sending up to 6 one-way encode streams (using AAC, HE-AAC or Opus) to separate decoders (requiring additional bandwidth) and multicasting on capable networks. Finally, BRIC-Link can act as a streaming audio server. In this mode, BRIC-Link is capable of delivering many HE-AAC streams that are compatible with computer-based media players like WinAmp and VLC.

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