EXFO IQS-8100 Series Transport Blazer for IQS-600 - Manual (Page 548)

System Tab
534 IQS-8100 Series Transport Blazer
Default Test Preferences
³
OTN (Mux Type PT20)
Allows the selection of the ODU multiplexed background traffic.
Choices are AIS, NULL Client (All Zeros), and PRBS31 pattern.
For ODU1 background traffic (ODU0 client):
The above example shows that ODU1 that contains ODU0
foreground traffic uses ODU0 background traffic.
For ODU2 background traffic (ODU1 client):
The above example shows that ODU2 that contains ODU1
foreground traffic uses ODU1 background traffic.