Specifications

4–6
Chapter 4
Installation
Connecting BSI Card and DBS
Cable Requirements
The DECT system performs best when both pairs of the twisted-pair cables have the same charac-
teristics. The system supplies voltage to the DBS using the ‘phantom feeding’ method. Even if one
line of a pair is broken, the voltage feed is maintained. If using existing wiring, check the diameter
and length of cable carefully.
The cable connecting the BSI card with the DBS is a twisted-pair cable. One end is an RJ-45 con-
nector (which connects to the DBS) and the other end is a champ connector (which connects to
the BSI card), as shown in the diagram below.
Characteristic Requirements
Diameter 0.6mm or 0.4mm
Max length
! 600m with 0.6 diameter
! 400m with 0.4 diameter
Interface 2xU interface & 64kbps via 4 B-channels