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Tandem Connection Monitoring
Tandem Connection Terminating Equipment (TCTE) Testing
4 Configure the OmniBER to send a valid VC-n to the TCTE Source. For this
example we have selected VC-4 mapping over STM-1.
5 Check that there are no alarms indicated on the OmniBER front panel.
If TCM is not enabled on the TCTE then the instrument STATUS line (at bottom
of the display) will indicate "TCM Loss of Multiframe (TC-LOM)", and the
Alarm Seconds results on the Results page will indicate TC-LOM alarms . The
absence of errors confirms that TCM is configured correctly.
6 Check for correct TC-APId (access point identifier) as follows:
7 Press
RECEIVE
8 Select the
9 Set the Receiver settings to match those of your system.
10 Set the TCM PATH field to
ORDER selection is enabled when a TU mapping is selected.
11 Select the
OVERHEAD MONITOR
12 Select the MONITOR field and choose
that the TC-APId matches the APId as expected from the TCTE, an example is
given on the following page.
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and select
.
SDH
folder.
MAIN SETTINGS
HIGH ORDER
folder.
or
. The LOW
LOW ORDER
, check on the display
TCM MESSAGE
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