EXFO FTB-800 Series for FTB-1 - Manual (Page 247)

Test Setup - Test Configurator, Timer, and System
NetBlazer 237
Traces (OTN)

SAPI (Source Access Point Identifier) corresponds to the TTI bytes 1 to
15. A maximum of 15 characters are allowed. The TTI byte 0 is set to
NULL (all 0’s). The expected SAPI message is available when the
SAPI OTU/ODU-TIM check box is selected.

DAPI (Destination Access point Identifier) corresponds to the TTI bytes
17 to 31. A maximum of 15 characters are allowed. The TTI byte 16 is
set to NULL (all 0’s). The expected DAPI message is available when the
DAPI OTU/ODU-TIM check box is selected.

Operator Specific corresponds to the TTI bytes 32 to 63. A maximum
of 32 characters are allowed.
TTI Traces Default Message
SM EXFO OTU SAPI
PM EXFO ODU SAPI
TCM EXFO TCMi SAPI
TTI Traces Default Message
SM EXFO OTU DAPI
PM EXFO ODU DAPI
TCM EXFO TCMi DAPI
TTI Traces Default Message
SM EXFO OTU OPERATOR SPECIFIC
PM EXFO ODU OPERATOR SPECIFIC
TCM EXFO TCMi OPERATOR SPECIFIC