User Manual
SUPM1
page 57 of 94© KEYMILE December 2015 EN/LZTBU 372 129/1 RC
94
Functional Description
•OK
The test of the parameter has finished and the measurement value fulfils
the threshold limit.
• Failed
The test of the parameter has finished and the measurement value does
not fulfil the threshold limit.
• Untestable
The test could not be done since an abnormal line condition prevents this
specific test.
• Cleared
The test has failed and the alarm has been cleared with the “Reset Line
Test Defect” button in the SUPM1 unit status.
5.11.5 Permanent line check
The permanent line checks are running on the SUPM1 unit as a background
process. These line checks do not need any configuration, they run forever
automatically.
The following parameters are supervised by the permanent line checks:
• Foreign voltage.
Indicates the presence of foreign voltages, e.g. from mains, on a sub-
scriber line.
• Continuous shortcut from b-wire to ground.
• Continuous shortcut from a-wire to battery.
• Continuous shortcut from a-wire to b-wire.
Any anomalies are reported as an alarm on the port layer.
The foreign voltage of the permanent line check is not the same measure-
ment as the foreign voltage of the line-test. Measurement ranges and thresh-
olds of the line-test do not apply.
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