Specifications

Bosch Security Systems B.V.
2 | Introduction
www.boschsecurity.com
Wireless Discussion System
Contribution equipment
Contribution equipment refers to the units that participants
use to take part in a conference. Depending on the type of
contribution unit used, participants can listen, speak, and
take part in electronic voting. The wireless discussion units
are designed for all kinds of gatherings and meetings and
offer a high level of functionality, digital convenience, and
distinctive styling. The basic discussion unit has a
microphone with an on/off button and status indicators;
more advanced units have dual discussion possibilities (for
two participants) and voting functionality. All discussion
units can be configured as a chairman unit.
Superb Sound and Speech Quality
The sound quality of the DCN Wireless System is first rate –
up to 20 kHz. Each robust unit produces crystal-clear sound
due to a very high signal-to-noise ratio. Units are also
protected against interference from other mobile equipment
using WiFi, Bluetooth or microwave signals. Being a mobile
phone-proof system, participants can leave their mobile
phones switched on during meetings without disrupting the
discussion system signal.
Easy maintenance
Simple battery maintenance is essential for a wireless
system. The Bosch DCN Wireless System ensures that
battery power is available when needed. Discussion units
use lithium-ion batteries with little or no charge degradation
during their long life. A fully charged battery lasts
approximately 20 hours, which is far longer than most
meetings or conferences. Batteries have a short recharge
time – as little as a few hours – and only the battery packs
need to be removed; the discussion units can remain in
place. Furthermore, each unit has a patent-pending “sleep
mode” to conserve power consumption during longer
breaks,. And, with the remote overview available via the
Congress Control Software, an administrator can view the
power consumption status of all active discussion units.
Secure and stable communication
All signals within the DCN Wireless System are digitally
protected against tapping or eavesdropping. The intelligent
system even features automatic subscription blocking.
Further subscriptions are prevented, even if the
administrator forgets to close the subscription process.
The WAP is linked to the WCCU using Bosch's proprietary
optical network, which provides digital optical
communication and power supply over a single cable. The
second optical network connector on the WAP allows the
system network to be expanded from a single branch to a
redundant loop configuration. In this ‘loop-through’
configuration, DCN Wireless can be interfaced with
compatible Bosch equipment such as Audio Expanders,
CobraNet™ interfaces and the Integrus language distribution
system.
Secure wireless communication between the WAP and the
discussion units is in the 2.4 GHz band, which is license-free
worldwide.
Central control equipment
The Bosch Wireless Central Control Unit (CCU) is the heart
of the congress management system. The CCU can operate
stand-alone to provide automatic conference control, or be
administered by an operator via a PC if more extensive
management is required. All CCUs can control up to 150
discussion units (such as delegate and chairman units) and
up to 93 Interpreter desks.
Fully automatic conference proceedings
In basic mode, the CCU automatically manages conference
proceedings and does not require operator control. It
provides basic microphone management, simultaneous
interpretation with up to 32 high-quality audio channels
including floor and voting facilities. This effectively allows
unsupervised control of even large, international
conferences.