Access to the communications
network by the Dterm® PSII user is gained through
radio connection with one of several Zone Transceivers,
(ZT®) installed on the premise. ZTs are placed in
an overlapping fashion throughout the facility in order
to provide continuous radio coverage.
Each Zone Transceiver provides for up to three simultaneous
connections to Dterm PSII users. Following NEC's deployment
guidelines, ZTs are placed in an overlapping pattern
to provide coverage by at least 2 ZTs. Thus each area
has a minimum of 6 radio channels. For areas requiring
greater capacity, the interval between ZTs can be reduced
to provide as many as 36 channels. As users communicating
through a ZT move out of its' range and into an area
covered by another ZT, the connection is automatically
switched, (called a handover) to the new ZT.
With the proper placement of ZTs throughout the facility,
users can move about the area while communicating, (or
idle) and have their calls follow them.
The Zone Transceiver is a small, (approximately 5.4"
x 6.3" x 1.6") inconspicuous device developed
to blend into the typical office environment. The ZT
is supplied with mounting hardware and can be installed
on walls, from ceilings, infrastructure or in drop ceilings.
To accommodate the environmental demands of providing
wireless coverage outdoors, we offer three outdoor box
options: ZT Outdoor Box, ZT Outdoor Heated Box* &
ZT Outdoor Fan Cooled Box*. These boxes are made from
fiberglass-reinforced polyester and provide insulated
protection for the Zone Transceiver. The standard box
is for average outside temperatures from 10º to
106º Fahrenheit. For colder climates, we offer
a box with a thermostat-controlled heater and for warm
climates a fan-cooled model. The ZT Outdoor Heated Box
and the ZT Outdoor Fan Cooled box require that commercial
AC power be run to the box.
To facilitate installation, we also offer a Wall Mount
Bracket and a Pole Mount Bracket.
Zone Transceiver II Specifications
- Communication Channels - 3 per ZT simultaneous - 36 per zone by Multiple ZT overlay
- Coverage Radius* -
- In-building - typically to 100 ft (construction dependent)
- Outdoors - typically to 330 ft (environment dependent)
- Size* - 5.4in x 6.3in x 1.6in
- Power* - 2.4 watts
- Operating Temperature - 14º F to 122º F
* Approximate Specifications subject to change.
New Zone Transceiver - ZT II-U
The physical unit connects using one pair of wire rather
than two pair of wire. In addition, each ZT II-U can
reach 3,000 feet using switch power from 24 AWG cable
or over 10,000 feet from the KSU when adding an ACA-U.
Radio coverage provided by the ZT II-U uses overlapping
Omni-directional spheres for an average range of 100
feet from the ZT II-U. The coverage area is dependent
upon the operating environment.
Each ZT II-U supports three simultaneous calls and
can be mounted on walls, drop ceilings or placed in
optional weather resistant enclosures and mounted outside
the building. Outdoors with unobstructed line-of-site
has a range of up to 300 feet from the ZT II-U.
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