Aastra Ascotel IntelliGate A150 System Manual page 16

Ascotel® DECT System
Obstacles may include:
• Moving metal objects such as lifts, cranes, carriages, escalators, blinds, especially
ones that are actuated automatically (the influence of such obstacles varies and
is therefore difficult to assess)
• Metal-panelled rooms and large metal-clad objects such as air conditioners,
computer rooms, metallized glassed areas (mirrored), fire protection walls,
storage tank installations, refrigerating units, boilers
• Building structures and installations such as steel-reinforced concrete ceilings
and walls, stairways, long corridors, rising mains, cable ducts
• Room furnishings such as metal shelves, file cabinets
Fig. 9: Attenuation of RF signals due to walls, windows, plants
Due to their typical furnishings/fixtures projects in the following environments
must be regarded as critical:
• Garages / repair workshops
• Scrap merchants
• Campsites
• Galvanizing plants
• Metal-working industry
16 Planning DECT systems