EXFO FTB-1, User Manual

Page: 329 / 675

Test Results
NetBlazer
317
Alarms/Errors
ODUx-TCM
Alarms

BDI
(Backward Defect Indication)
RX: The BDI bit in the TCM overhead field Byte 3, bit 5 is “1” for at least
5 consecutive frames.
TX : Generates a "1" in the BDI bit of the TCM overhead field (byte 3,
bit 5) continuously.

BIAE (Backward Incoming Alignment Error)
RX:
The BEI/BIAE bits in the TCM overhead field Byte 3, bits 1 to 4 are
“1011” for at least 3 consecutive frames.
TX
: Generates "1011" in the BEI/BIAE bits of the TCM overhead (byte 3,
bits 1 to 4) continuously.

IAE
(Incoming Alignment Error)
RX: The STAT information in the TCM is “010” for at least 3 consecutive
frames.
TX : Generates "1" in the IAE bit of the TCM overhead (byte 3, bit 6)
continuously.

LTC (Loss of Tandem Connection)
RX:
The STAT information in the TCM Byte 3, bits 6, 7, and 8 are “000”
for at least 3 consecutive frames.
TX
: Generates "000" in the STAT field of TCM overhead (byte 3, bits
6 to 8) continuously.

TIM
(Trace Identification Mismatch)
RX : The SAPI and/or DAPI do not math the expected SAPI and/or DAPI.
This alarm is only available when the Enable TIM SAPI and/or DAPI
check boxes are selected from
PT on page 147.