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Cisco ONS 15454 DWDM Reference Manual, R8.5
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Chapter 16      Alarm and TCA Monitoring and Management
16.9.2    G.709, SONET, and SDH TCA Groups
Note Suppressed TCAs are not reported as Not Reported (NR) conditions. As a result, suppressed TCAs do 
not appear in the CTC Conditions tab and they cannot be retrieved with the RTRV-COND TL1 command.
16.9.2 G.709, SONET, and SDH TCA Groups
This section lists the TCAs that are suppressed for each alarm. TCA suppression is determined by how 
framing is configured for TXP and MXP trunks.
Table 16-9 lists the TCAs for each type of trunk framing and alarm.