Brochure

www.comrex.com • e-mail: [e-mail] • 19 Pine Road, Devens, Massachusetts 01434 USA • Tel: [phone] • Fax: [phone]
•*44.1kHzand32kHzmodesareonlysupportedviaAES3digitalaudioI/Oonbothendsoflink
•FLACbandwidthisvariableandbasedonaudioinput
ALGORITHM ENCODE RATE NETWORK RATE BANDWIDTH DELAY
Linear48kHzMono 768Kb/s 818Kb/s 22kHz 25mS
Linear48kHzDualMono 1.536Mb/s 1.586Mb/s 22kHz 25mS
Linear44.1kHzMono* 705.6Kb/s 751.6Kb/s 20kHz 27mS
Linear44.1kHzDualMono* 1.4112Mb/s 1.4572MB/s 20kHz 27mS
Linear32kHzMono* 512Kb/s 546Kb/s 15kHz 31mS
Linear32kHzDualMono* 1.024Mb/s 1.058Mb/s 15kHz 31mS
FLAC48kHzMono ~540Kb/s ~572Kb/s 22kHz 30mS
FLAC48kHzDualMono ~1.08Mb/s ~1.112Mb/s 22kHz 30mS
FLAC44.1kHzMono* ~500Kb/s ~530Kb/s 20kHz 32mS
FLAC44.1kHzDualMono* ~1Mb/s ~1.03Mb/s 20kHz 32mS
FLAC32kHzMono* ~360Kb/s ~382Kb/s 15kHz 36mS
FLAC32kHzDualMono* ~720Kb/s ~752Kb/s 15kHz 36mS
AACMono 56-64Kb/s 72-80Kb/s 20kHz 100mS
AACStereo 96-256Kb/s 112-272Kb/s 20kHz 100mS
HE-AACMono 18-48Kb/s 26-56Kb/s 15-20kHz 210mS
HE-AACStereo 64-96Kb/s 72-104Kb/s 20kHz 210mS
HE-AACStereov2 24-48Kb/s 32-56Kb/s 15kHz 250mS
OPUS48kbpsMono 48Kb/s 64Kb/s 20kHz 46ms
OPUS56kbpsMono 56Kb/s 72Kb/s 20kHz 46ms
OPUS64kbpsMono 64Kb/s 80Kb/s 20kHz 46ms
OPUS64kbpsStereo 64Kb/s 80Kb/s 20kHz 46ms
OPUS96kbpsStereo 96Kb/s 112Kb/s 20kHz 46ms
OPUS128kbpsStereo 128Kb/s 144Kb/s 20kHz 46ms
BRIC-Link II Point-to-Point
IP Audio Conversion
HotSwap
BRIC-Link II is equipped with HotSwap,
a feature of CrossLock “Dual Network”
mode that allows users to designate
one network as primary and another
network as secondary. 4G networks can
be used only as a secondary network on
BRIC-Link II and only when used with
Comrex Connect Modems (SIM not
included).Fall-overtobackuphappens
in a fraction of a second, and fallback
is seamless.
Audio Coding
For users concerned about delay and
coding artifacts, BRIC-Link II offers
a robust stereo or mono linear mode
that does not compress audio. In
addition, BRIC-Link II is the only real-
timeaudiocodectoofferFLAClossless
compression, which reduces network
throughput by 30–40% with absolutely
transparent coding and no tandem
coding concerns.
For situations where more reduced
bandwidth is desired, BRIC-Link II 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 II also implements
Opus audio compression, along with
VoIPstandardsG.722andG.711.
The chart to the right represents a
sampling of the algorithms available
as well as corresponding encode rates,
network rates, bandwidth, and delay.
Transmission Modes and Delays
BRIC-Link II is a true codec, offering
a full-duplex stereo encoder and
decoder in each box. Where two-
way transmission is not required, the
reverse channel may be disabled. The
CrossLock 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and
FLAC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.
Control
Make connections with BRIC-Link II
via a new HTML5-based web user
interface.NomoreFlash!
The standard Flash interface is still
available. Codec Commander is also an
optional Windows-based user interface,
while Fleet Commander lets you
manage your fleet of codecs.
Accessories
Ask about our dual rackmount kit.
Additional Features
BRIC-Link II 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 connec-
tions. An ancillary data stream is avail-
able via RS232 along with the audio
stream. In AAC modes, the system is
capable of sending up to 3 one-way
encode streams to separate decoders
(requiring additional bandwidth). In
addition, BRIC-Link II supports IP Mul-
ticast on capable networks.
Compatibility
BRIC-Link II is compatible with all
ACCESS codecs, including ACCESS
NX, ACCESS Portable Classic, ACCESS
2USB, ACCESS MultiRack, and
ACCESS Rackmount. BRIC-Link II is
also compatible with other BRIC-Link
and BRIC-Link IIs as well as the free
smartphoneappFieldTap,availablefor
AndroidandiOS.