Beyerdynamic Unite TP - 6 System Information; Dect; Operating Range; Automatic Frequency and Group Management

UNITE – System information
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6. System information
6.1 DECT
Unite is based upon DECT (Digital Enhanced Cordless
Telecommunications) technology, an international
andard for telecommunications using wireless
technology, and known in paicular for its use with
cordless telephones. Wireless technology enables a
device to communicate with a central processing unit.
The modern, future-proof transmission plaorm in DECT
andard means the syem can be used worldwide
without regiration and free of charge. In addition,
DECT syems oer outanding security as for each
connection the receiver is required to regier with the
transmitter using a confidential code. Below 2.4 GHz,
DECT uses dierent frequencies to WLAN, Bluetooth®,
etc. and therefore causes no inteerence with these
networks.
6.2 Operating range
Unite is able to bridge very great diances between the
various device types. Peak values up to 300m can be
achieved in open areas. There are various influencing
factors inside buildings. Operating range is rericted by
the number and composition of walls, ceilings and
floors. Peormance is inevitably rericted as a result of
absorption and reflection of the high frequency range.
For example, reinforced concrete absorbs frequencies
to a ceain extent, whereas a metal-clad ceiling
reflects them.
A fuher influencing factor is the number of active DECT
wireless connections conditional upon the frequency
band available in each region. In Europe, for example, a
maximum of 120 channels can be in use, whereas the
maximum for the American market is 60 channels. The
total number of connected devices can be much higher
than these key indicators, however, since they relate
only to the number of simultaneously used DECT radio
connections actively occupying a channel.
Actual reriction of the syem is generally only to be
expected when all influencing factors occur at once.
For example: In one area of a building there are 70
simultaneously active DECT telephones; in this same
pa of the building there are 32 Unite groups, the trans-
mitters of which are attempting to reach their groups
through several walls simultaneously. The walls are
made of reinforced concrete and all ceilings are metal-
clad.
6.3 Automatic frequency and group management
A fuher benefit of this technology is automatic
frequency management. This means you need not
worry about frequencies, as the syem itself controls
transmission and adjus automatically for secure
transmission. It recognises the availability and
allocation of frequencies and adjus dynamically and
automatically. Inteerence signals are identified at an
early age, enabling the syem to react immediately.
Without the knowledge of the user and/or liener, it
switches frequency to ensure uninterrupted operation.
The syem also identifies all active wireless
connections and adapts these dynamically so that
individual groups do not inteere with each other. This
means Unite can be used in parallel by up to 32 groups.
A high operating range and long operating time create
able conditions for transmission.
All devices are supplied with the group ID 256 and fixed
audio encryption allowing quick and easy setup. This
allows for quick and easy initial use. The group ID
identifies devices that can be placed in a viual group.
For example, all devices within a building, a tour group
or a conference room. The transmitter will only transmit
the audio signal to a channel with a predefined
channel name. If there are several transmitters in a
group, the channel for the respective transmitter can be
selected on the receiver. You will need to eablish a
new pairing if you require several device groups or
secure audio transmission that cannot be intercepted
by another group using Unite devices. See chapter on
“Create/define a new pairing”. The factory preset group
ID is 256.
DECT frequency range Free of charge and no registration
required in:
1880 - 1900 MHz EU Frequency band Australia, Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic,
Denmark, Estonia, Finland, France,
G
ermany, Great Britain, Greece,
H
ong Kong, Hungary, Ireland, Israel,
Italy, Jordan, Latvia, Lithuania, Lu-
xembourg, Malaysia, Malta, Molda-
via, Netherlands, New Zealand,
Norway, Poland, Portugal, Romania,
R
ussia, Singapore, Slovakia, Slove-
n
ia, South Africa, Spain, Sweden,
Switzerland, United Arab Emirates
1
893 – 1906 MHz
J
apan
J
apan
1
920 – 1930 MHz
N
orth America
C
anada, USA
Table 1