Installation Power Failure
38
Note: Emergency service is not possible with system access
configurations.
Testing the Power Failure Circuit
You can test the configuration as follows:
1. Disconnect the OpenCom 510 from the mains supply (see instructions in
Installing the Central Control Module starting on page 29, steps 1 to 3).
2. Disconnect the NTBA from the mains supply.
3. It should now be possible to make external calls through the ISDN telephone
connected to port S
0
8.
MX+S01-8: Location of the DIP switches for the power failure circuit
S17/18 S19/20
1
2
ON
1
2
ON
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