MERLIN LEGEND Communications System Release 6.1
Pocket Reference
555-661-116
Issue 1
August 1998
Page 28
Environmental Specifications
Environmental Specifications
The control unit requires a regulated environment and can be
located in any room or closet that is temperature-controlled and
clean. Do not mount the control unit where it will be exposed to
direct sunlight.
In addition, the control unit should not be co-located with air
conditioning or ventilation units, compressors, fans and blowers,
heaters, arc welders, or other machinery that produces electrical
interference.
The control unit is mounted on a Lucent Technologies pre-drilled
backboard.
Once installed, it is important to keep the control unit site clear of
hazards, such as stacked paper or boxes, that block ventilation.
Installing any machinery in the vicinity of the control unit should be
avoided. If any pollution-producing work (such as sanding or spray
painting) is to be done in the area, care should be taken to protect
the unit.
The following table gives the environmental specifications for the
control unit.
Control Unit
Fully loaded basic carrier
Weight: 45 lb. (20.4 kg)
Dimensions: 14 in. wide x 23 in. high x 12 in. deep
(35.6 cm x 58.4 cm x 30.5 cm)
Fully loaded 2-carrier system
(basic carrier plus 1 expansion carrier)
Weight: 90 lb. (40.8 kg)
Dimensions: 25 in. wide x 23 in. high x 12 in. deep
(63.5 cm x 58.4 cm x 30.5 cm)
Fully loaded 3-carrier system
(basic carrier plus 2 expansion carriers)
Weight: 135 lb. (61.2 kg)
Dimensions: 37 in. wide x 23 in. high x 12 in. deep
(94 cm x 58.4 cm x 30.5 cm)
Mean Time Between Failures
(mean/average time the system is expected to operate before any
type of failure occurs)
2.4 years
For a system configured with 24 trunks and 50 stations
(extensions)
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