User Manual
SUPM1
page 52 of 94© KEYMILE December 2015 EN/LZTBU 372 129/1 RC
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Functional Description
5.11 Line Test
The SUPM1 provides an integrated line-test that makes it possible for a net-
work provider to check the subscriber lines after a new installation of the
XMC20 or to check periodically any abnormal conditions on the 2-wire sub-
scriber lines.
A line-test is started either manually (on demand line-test) or automatically in
a user-defined interval (cyclic line-test).
The SUPM1 checks for each subscriber whether he is busy or idle. If a sub-
scriber is busy (off-hook or ringing) the line-test for this particular subscriber
is postponed.
Ongoing calls are not interrupted by a line-test. The line-test will be executed
after the call is finished.
If during a running line-test a subscriber goes off-hook, the line-test is
stopped. The line-test is restarted when the subscriber goes on-hook again.
It is possible to leave out specified subscribers while testing. This is helpful if
a subscriber line always generates a fault when running the line-test due to
the fact that the subscriber has connected “non standard” terminals or gener-
ates other problems with his line.
In the V5CAS mode of operation, SUPM1 requests permission to execute a
line-test from the VOIP1 unit for each subscriber. So the VOIP1 is informed
about the ongoing line-test. During the line-test
• the subscriber state is busy,
• the administrative state is locked and
• the operational state is enabled.
Only idle subscribers are tested. There are no interruptions of ongoing calls
due to line-testing.
In the MCAS modes and Phone-Exchange mode of operation, SUPM1
sends the “off-hook” CAS pattern towards the exchange.
In all Phone-Phone modes the EOW service is not available during a line
test.
5.11.1 Cyclic Test and manual Test
The cyclic line-test is performed on all enabled user ports. The cyclic line-
test has to be enabled in the SUPM1 unit configuration, on the “Line Test
Parameters” tab.
For any subscriber port it is possible to prevent the cyclic line-test. This is
done on the port configuration where you can disable the cyclic line-test.
For the cyclic line-test the following parameters can be configured:
• Line Test Schedule
Here you define the interval between the executions of the line-tests. You
can choose between daily and weekly.
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