Installation
Installation cable NF cable screened (required for low levels)
4.7.3.3.1.4 FXS mode: Control output
If an FXS interface is configured as a control output, the signal can be used to control external devices or
equipment (e.g. heating, alarm or outdoor lighting systems).
The no-load voltage is 24 VDC; the current is limited to 25 mA. A connected relay must be of the type 24
VDC and must not draw more than 300 mW in power.
There are no special requirements for the cables.
CAUTION:
Control outputs must have a floating connection.
Figure 52: Connection for FXS mode: Control output
[1] The diode is necessary, in order to avoid unwanted voltages at the control output during the the start-up
phase of the communication server.
Figure 53: Connection for FXS mode: Control output
Release 7.1
145 System Manual for Mitel SMB Controller
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