EXFO FTB-8100 Series Transport Blazer for FTB-200 - Manual (Page 198)

SONET Tabs
186 FTB-8100 Series Transport Blazer
APS/Advanced Line OH TX/RX (SONET)
APS/Advanced Line OH TX/RX (SONET)
The Line OH TX allows changing the line overhead information to be
transmitted while the Line OH RX allows verification of the line overhead
information received.
Press Main, Test, SONET, Line, and APS/Adv OH TX/RX.
Advanced
Gives access to the advanced section of the Line OH TX/RX signal.
APS
³
Switching Mode
Allows the switching mode selection and is available on both TX and
RX tabs. Choices are Linear and Ring. The default setting is Linear.