User Manual
SUPM1
page 53 of 94© KEYMILE December 2015 EN/LZTBU 372 129/1 RC
94
Functional Description
• Start Date and Time
In this dialogue you define the date of the first cyclic line-test and the
starting time of the line-test. A reasonable time to start the test is between
2am and 4am since then the traffic is low.
Please keep in mind that a line-test for an entire SUPM1 will typically take
about 3 minutes and up to 8 minutes in the worst case.
The manual line-test can be performed for all enabled user ports or just for a
selected user port.
To start a line-test for all enabled user-ports, press the “Start Line Test” but-
ton in the SUPM1 unit status.
To start a line-test for an individual user-port, press the “Start Line Test” but-
ton in the SUPM1 port status. The selected subscriber will be blocked auto-
matically.
If a subscriber can not be blocked within the line-test timeout then “Rejected”
will be displayed in the line-test status.
You can stop a running line-test at any time by pressing the “Stop Line Test”
button in the SUPM1 unit status. This stops all manual and cyclic line-tests.
A running line-test can not be restarted manually. To run a line-test you have
to wait until the currently running line-test has finished. This may last typi-
cally up to 10 seconds and up to 30 seconds in the worst case.
A running line-test started from the unit status dialogue generates a “Mainte-
nance Function Active” (MFA) alarm on the unit layer.
A running line-test started from the port status dialogue generates a “Mainte-
nance Function Active” (MFA) alarm on the port layer.
The “Reset Line Test Defects” button in the SUPM1 unit status allows you to
clear all alarms caused by the line-test.
5.11.2 Line-test Parameters
All test parameters covered by the line-test are grouped in test areas.
SUPM1 offers four test areas for the line-test, where one area is always ena-
bled and the other three areas can be enabled or disabled. The following test
areas are available:
• Resistance / Isolation (always enabled)
Tests the resistance between
− a-wire and b-wire
− b-wire and a-wire
The resistance measurements “a-wire to b-wire” and “b-wire to a-wire” allow
to check the isolation between a-wire and b-wire (a-wire more positive than
the b-wire) and the line impedance (b-wire more positive than the a-wire)
using a test adapter at the subscribers location:
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