EXFO FTB-800 Series for FTB-1 - Manual (Page 439)

Test Functions
NetBlazer 429
OH - SONET/SDH

M0 or M1 (SDH)
M0: MS-REI. STM-1 channel #1 of a STM-0e and STM-0 signal.
M1:MS-REI. STM-1 channel #1 of a STM-1e and STM-1 signal;
channel #3 of an STM-N signal (N>1).
Undefined “--” for all other channels not covered by M0, and M1.

E2
1
: Orderwire. Provides a 64 Kbit/s voice channel for communication
between LTEs.
STS/AU/TU-3

J1: Trace. Available when the Trace format is set to 1 Byte (Refer to
Traces (SONET/SDH) on page 239).
SONET: The J1 Trace byte provides a 16 or 64 byte fixed string to verify
connection between path transmitting equipment and path receiving
equipment.
SDH: The higher-order (AU) / low-order (TU) VC-N path trace byte
provides a 64 byte fixed string to verify connection between path
transmitting equipment and path receiving equipment.

B3: BIP-8. The BIP-8 (Bit-Interleaved Parity) byte provides path error
monitoring. The byte is calculated by performing a even-parity check
over all bits of the previous SPE.

C2: Signal Label. Entering a C2 byte value will automatically update the
Path Signal Label (C2) selection and vice versa. Refer to
STS/AU Path (C2) on page 150 for more information.
1. This byte is only defined for the first STS-1/STM-1 frame of a composite signal.
C2
(Hex.)
Description
SONET SDH
00
a
Unequipped UNEQ or supervisory-UNEQ
01 Equipped - Non-Specific RES (Equipped - Non-Specific)