VeEX VePAL TX300M, User Manual

Page: 149 / 421

Go back to top Go back to TOC
9.5 TCM Tasks (Tandem Connection Monitoring)
Tap the TCM Tasks icon to display the screen shown below.
TCM Tasks
Results are available for up to six tandem connections. The counts are numbers of seconds containing the error or indication.
Tandem connections and corresponding source and sink functions are defined in ITU-T G.707, G.709, and G.783.
TCM enables the user and its signal carriers to monitor the quality of the traffic that is transported between segments or
connections in the network. SONET/SDH allowed a single level of TCM to be configured, while ITU G.709 allows six levels of
tandem connection monitoring to be configured. The assignment of monitored connections is currently a manual process that
involves an understanding between the different parties. There are various types of monitored connection topologies: cascaded,
nested, and overlapping.
LTC:
Loss of Tandem Connection Signal
OCI:
Open Connection Indication
AIS:
TC Alarm Indication Signal
LCK:
Locked Defect
BDI:
Backward Defect Indication
IAE:
Incoming Alignment Error
BIAE:
Backward Incoming Alignment Error
BEI:
TC Backward Error Indication
Go back to top Go back to TOC
TX300S_e-manual_D07-00-064P_RevA00