EXFO FTB-8500 Series for FTB-500 - Manual (Page 264)

WIS Tabs
250 FTB-8500 Series and FTB-8120NGE/8130NGE
WIS OH RX
Path Overhead

J1
1
: Trace.

B3
1
: BIP-8

C2: Signal Label

G1: Status

F2: User Channel

H4
1
: Multiframe Indicator

Z3 and Z4: Growth

N1: Tandem Connection
Path Signal Label (C2)
The C2 byte is allocated to indicate the content of the STS SPE, including
the status of the mapped payloads.
1. Not supported in 10GigE standard..