VeEX MPA User Manual page 837

MPA_e_manual_D07-00-129P_RevA00
Term Definitions
Tandem Connection-Incoming Error Count. Indicates a B3 error count is being received
from downstream TCM equipment. Bits 1-4 of the N1 byte are used for this indicator.
This is an error.
TC-LOF
Tandem Connection-Loss of Frame. Indicates the loss of a valid multiframe pattern from
upstream TCM equipment. This is an alarm.
TC-ODI
Tandem Connection-Outgoing Defect Indicator. Indicates that the unit is sending an ODI
alarm to upstream TCM equipment. Bit 7 in multiframe 74 of the N1 byte is used for this
indicator. This is an alarm.
TC-OEI
Tandem Connection-Outgoing Error Indication. Indicates that the unit is sending an OEI
error to upstream TCM equipment. Bit 6 of the N1 byte is used for this indicator. This is
an error.
TC-RDI
Tandem Connection-Remote Defect Indication. Indicates that a defect has occurred at
the downstream TCM equipment. The unit is receiving an alarm. Bit 8 in multiframe 73
of the N1 byte is used for this indicator. This is an alarm.
TC-REI
Tandem Connection-Remote Error Indication. Indicates that an error has occurred at
the downstream TCM equipment. The unit is receiving an error. Bit 5 of the N1 byte is
used for this indicator. This is an error.
TC Summary LED
Tandem Connection Summary. Indicates if a TCM error or alarm has been detected. If
this LED is red, select the LED text (TC Summary) to display the TC LEDs.
TC-TIM
Tandem-Connection Trace Identifier Mismatch. Indicates an alarm has occurred
because the incoming TC trace does not match the expected TC trace. The alarm's
duration-in-seconds appears on the Results' Alarm screen.
TC-UNEQ
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