Installation Procedures for the DRM Installing and Registering the MDW 9040 Pocket Phone
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MDW Wireless Pocket Phone Installation, Troubleshooting, and Use,
503-801-190 Issue 1, May 2000
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When wall-mounting the DRM, place the DRM high on the wall for optimum
voice quality and range. Allow 6–12 inches (15.2–30.5 cm) of space between the
top of the antenna on the radio modules and the ceiling.
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DO NOT install the DRM above a drop or suspended ceiling.
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Do not locate the DRM within 3 feet (.9 m) of any large metal object, and be sure
no metal objects are in the line of sight to the operating area of the handset.
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Do not locate the DRM within 6 feet (1.8 m) – 10 feet (3 m) of equipment with
microprocessors, such as answering machines, personal computers, and fax
machines; control units, communications system switches, or other phones
(especially speakerphones); competing radio devices such as wireless
bar-code scanners; electromagnetic equipment such as electric motors; or
electrical main power feeds, junction boxes, circuit-breaker panels, fuse
boxes, or 220-volt power lines.
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Be sure the DRM does not share the same power line as equipment with
microprocessors such as answering machines, personal computers, and fax
machines or electromagnetic equipment such as electric motors.
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Install a single DRM within 3 feet (0.9 m) of either side of, and within 6 to 8 feet
(1.8 to 2.4 m) above, a properly grounded, 3-prong electrical outlet that is not
controlled by an ON/OFF switch.
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You can install a single DRM in a remote location using a telephone line cord to
connect the radio module to the communications system switch/control unit.
IROBs and an auxiliary power supply must be used for out-of-building
installations.
Single-Zone and Dual-Zone Configuration
Multiple DRM units can be installed and configured for single- or dual-zone
operation.
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In a single-zone configuration, all DRMs provide communication to the same
area or zone.
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In a dual-zone configuration, two sets of DRMs share handsets that can be
operated in two different areas. This type of operation requires two connections to
the associated switch.
The customer, usually the system administrator, is responsible for registering the
DRM with its two associated handsets. For single-zone operation, each handset must
be registered to its associated DRM; each DRM can be registered with one or two
handsets. For a handset being used in a dual-zone configuration, the handset must be
registered to a DRM in each of the two zones.
Auxiliary Power and Switch Wiring
The DRM connects to an associated switch through a switch port. Normally, a DRM
is powered through one or both of its switch port interfaces. However, there may be
occasions when an auxiliary power supply may be required.
With 24-gauge wire, the maximum loop length of a DRM connected with a
PARTNER or MERLIN system is 1,000 feet. When the DRM is connected with a
MERLIN MAGIX or DEFINITY system, the maximum loop length is 2,000 feet.