EXFO FTB-8510B Guia Del Usuario página 917

Path Signal Label (V5)
The V5 byte is allocated to indicate the content of the VT path, including
the status of the mapped payloads.
Bits 5, 6, 7 of V5
a
000
001
010
011
100
101
110
a
111
a. These bytes cannot be selected in receive mode.
For LOP OH RX tab only:
Expected Path Signal Label: Allows selecting the expected Path Signal
Label.
Enable PLM-V/UNEQ-V (Payload Label Mismatch - VT / Unequipped -
VT): Allows enabling the Signal Label Mismatch for the expected
message defined.
SONET/SDH Application
Unequipped
Reserved (Equipped - Non-specific)
Asynchronous
Bit Synchronous
Byte Synchronous
Extended Signal Label
Test Signal, ITU-T 0.181 specific mapping
VT SPE AIS (TCM)
LOP OH TX/RX (SONET)
Description
SONET Tabs
267