Ascotel IntelliGate 2025/2045/2065
Part 4 Cabling interfaces 813
Note:
Make sure there are no loudspeakers in the vicinity of the terminals used
to make announcements (to prevent acoustic feedback).
7.5.6 Switch group interface
The switch group 1 routing element can be controlled via control inputs ME1 and
ME2 on the OI-2DOOR special card. Control is effected using external switches
(door contacts, time switches, etc.) which switch the appropriate inputs to the
PBX ground (GNDC). The signal no-load voltage is approx. - 40 , the short-circuit
current approx. 4 mA.
The permissible switch and loop resistances are as follows:
• Active state: < 4.5 kΩ
• Passive state: > 11 kΩ
There are no special requirements for the cables.
Control of the switch group using the control inputs takes priority over control
using */# procedures.
Tab. 4.69: Control of switch group 1 via the control inputs
Switch positions for switch group 1 ME1 ME2
Position 1 Off Off
Position 2 On Off
Position 3 Random On
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