Installation
129
Aastra 415/430 as of R3.2
syd-0344/1.6 – R3.2 – 09.2014
Tab. 61
Cable requirements for FXS mode: 2-wire door
FXS mode: Control output
If an FXS interface is configured as a control output, the signal can be used to con-
trol external devices or equipment (e.g. heating, alarm or outdoor lighting sys-
tems).
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.
Warning
Control outputs must have a floating connection.
[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.
Fig. 55
Connection for FXS mode: Control output
See also
Besides the control outputs on FXS interfaces control outputs on ODAB
cards can also be used to control external devices and equipment (see
"Equipment on the ODAB options card", page 138
).
Core pairs
cores
1
2
Stranded
only with lengths > 200 m
Wire diameter, core
0.4 … 0.8 mm
FXS resistance
max. 2
200
Line length 0.6 mm diameter
max. 3 km
Screening
not required
a
b
[1]
24 VDC
max. 25mA
FXS interface
