EXFO FTB-800 Series for FTB-1 - Manual (Page 225)

Test Setup - Test Configurator, Timer, and System
NetBlazer 215
Signal - Signal Configuration (SONET/SDH)

REI-L/MS-REI Computation Method (OC-192/STM-64 only): Allows to
select the default method used to calculate the REI-L/MS-REI error for
OC-192 and STM-64 signals. Choices are M1 Only and both M0 and M1.
The default setting is M1 only.
STS/AU and VT/TU Mappings

Timeslot/Number
Timeslot (SONET) allows the selection of the STS timeslot number.
Refer to SONET Numbering Convention on page 566 for more
information.
Number (SDH) allows the selection of the AU channel number. Refer
to SDH Numbering Convention on page 567 for more information.

TCM check box when selected (cleared by default) allows Tandem
Connection Monitoring (TCM).

TC-UNEQ-P / TC-UNEQ-V / HPTC-UNEQ / LPTC-UNEQ check boxes
when selected (cleared by default) allows the monitoring of the
corresponding Tandem Connection - Unequipped alarm. Only
available when the TCM check box is selected.

Overwrite Fixed Stuff (STS-1 only) check box when selected (default)
fills up the bytes of the STS-1 SPE’s columns 30 and 59 with the
selected pattern from the tab BERT on page 101.

Background Traffic allows the selection of the high order path
background traffic: AIS, Equipped (PRBS23) - (default), or
Unequipped.