EXFO FTB/IQS-85100G Packet Blazer for FTB-500/IQS-600 - Manual (Page 74)

Test Setup - Test Configurator, Timer, and System
64 FTB/IQS-85100G
BERT and Unframed BERT
Service Disruption
The Service Disruption Time (SDT) corresponds to the duration associated
to a defect that occurred in the network. For example a disruption that
occurs during a network switching from the active channels to the backup
channels or vice versa.
Note: The service disruption measurements are cleared when changing the
criteria.

Defect allows to choose on which layer and defect the service
disruption time test will be performed. Choices depend on the
selected test path.
Layer Defect
Interface LOS
Section/RS LOF-S/RS-LOF, B1
Line/MS AIS-L/MS-AIS, RDI-L/MS-RDI, REI-L/MS-REI, B2
STS/AU Path AIS-P/AU-AIS, LOP-P/AU-LOP, RDI-P/HP-RDI, REI-P/HP-REI, B3, UNEQ-P/HP-UNEQ, PDI-P
(SONET)
OTL a
a. The service disruption time measurement is available per lane for OTL defects at the exception of LOL
which is global for all lanes. Refer to OTL-SDT on page 215 for results per lanes.
LOF, OOF, LOL, LOR, OOR, Inv. Marker, FAS
FEC FEC CORR, FEC UNCORR
OTUk b
b. Only available on the top layer.
AIS, LOF, OOF, LOM, OOM, BDI, IAE, BIAE, BIP-8, BEI, FAS, MFAS
ODUk b AIS, OCI, LCK, BDI, BIP-8, BEI, FSF, BSF, FSD, BSD
OPUk b AIS, CSF, PLM c , MSIM d , LOOMFI de , OOMFI de , OMFI de
c. Available when the PLM check box is selected (refer to page 89 for more information).
d. Available with multiplex test only.
e. Available with OPU4 only.
BER Pattern Loss, Bit Error (default)