Planning
36
Planning Aastra 400 DECT systems as of R1.0
syd-0457/1.0 – R1.0 – 10.2012
DECT radio unit with indoor supply
Fig. 15 Optimum positioning of the DECT radio unit indoors
The following principles are to be observed when installing DECT radio units in-
doors:
• In indoor supply install the radio units on inner walls rather than outdoor walls.
• Ceiling mounting can also be considered.
• Do not install in the immediate vicinity of cable ducts, metal cabinets and other
large metal objects. They obstruct transmission and / or can result in crosstalk.
Maintain a distance of > 50 cm!
• Connecting line between communication server and DECT radio unit:
Crosstalk can occur here if they are laid in parallel with mains feeder lines inside
cable ducts (e.g. engineering workshops). This must be taken into account
when choosing the cable and the cable route.
• RF interference fields: PCs and other electronic equipment can affect radio trans-
mission in the vicinity either intermittently or permanently.
• Radio units and cordless phones generate pulsed RF signals. These can affect
sensitive electronic equipment (control systems, measuring sensors, sensors, di-
agnostics equipment on intensive-care wards in hospitals, etc.) permanently or
temporarily.
Note:
Take note of safety distances and safety regulations. In areas subject to
explosion hazards take note of the relevant rules and regulations.
approx. 30% of energy
becomes dispersed
To Next Page
Loading...
