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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
and select
.
8
Select the
folder.
9
Set the Receiver settings to match those of your system.
10
Set the TCM PATH field to
or
. The LOW
ORDER selection is enabled when a TU mapping is selected.
11
Select the
folder.
12
Select the MONITOR field and choose
, check on the display
that the TC-APId matches the APId as expected from the TCTE, an example is
given on the following page.
RECEIVE
SDH
MAIN SETTINGS
HIGH ORDER
LOW ORDER
OVERHEAD MONITOR
TCM MESSAGE
SONET_Usr.bk Page 128 Wednesday, December 13, 2000 11:11 AM
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