EXFO FTB-8100 Series Transport Blazer for FTB-200 - Manual (Page 369)

Common Tabs
SONET/SDH Application 357
TCM RX
TCM RX
Press Main, Test, SONET/SDH, HOP/LOP, and TCM RX.
The TCM Analyzer tab gives alarms and errors status for the Tandem
Connection sub-layer.
Configuration
Enable TCM: Allows the activation of the Tandem Connection Monitoring
(TCM). This setting is disabled by default.
Error Analysis
³
TC-REI (Tandem Connection - Remote Error Indication): The TC-REI
indicates errored blocks caused within the Tandem Connection (bit 5
of the N1/Z6/N2 byte).
³
TC-VIOL (Tandem Connection - Violations):
For HOP: TC-VIOL indicates the number of B3 parity violation within the
tandem connection for STS-1 SPE/VC-3 and above.
For LOP: TC-VIOL indicates the number of violation within the tandem
connection for VT6 SPE/VC-2 and below.