Description varix 200/varix 14 (DECT)
2 - 13
2 Planning a cordless communications network
2.5
Installation
2.5.1
Cable installation
The PABX system and FP must be linked by two Up0 cable connections each. It should be
noted that many of the problems which occur with DECT systems are the result of faulty cab-
ling.
- The wiring used must be telephone cables of the following type: I-Y (St) Y 2x2x0.6 or : I-2Y
(St) Y 2x2x0.6 St III Bd.
- The conductors should be connected in such a way that each Up0 port is connected to
one twisted-pair.
- The base stations are connected via two Up0 cables. The wire pairs used here should be
in one and the same cable; they must be of the same length!
- As the wires in the connecting cables from the telephone outlet to the FP are not twisted
pairs, they may under no circumstances be extended.
- Maximum length of cables to the FPs are: if UPDTS interfaces are used: 1000m; if UP0TS
are used: 1500m (for wires of 0.6 mm diameter).
- If cables between 1500 and 2000 metres are used with UP0TS, then the FP should be
powered by a mains adapter power supply.
2.5.2
Putting the FPs into operation
Install the FPs physically, connect the power supplies, but do not connect them to the PABX.
The telephone cables should be terminated using shorting plugs. Ensure that sufficient shorting
plugs are available.
- FPs should be installed as high up as possible on the respective floor of a building, but
ensure a minimum distance of 50 cm from the ceiling.
- When selecting a height for installation, ensure a clear line of sight to the device. In partic-
ular, do not install FPs behind pillars, trees or in a niche. No metal objects should be within
the line of sight.
- If several FPs are being installed per radio cell, then observe minimum distances between
them. These are: 2.5 m horizontally and 25 cm vertically.
- Antennae should be mounted vertically (refer to ”Antenna radiation pattern”).
