Allied Telesis AT 8000/8POE - Manual (Page 91)

AT-S81 Management Software User’s Guide
Section I: Using the Menus Interface 91
4. Type the number of the trunk group you want to enable or disable.
The following prompt is displayed:
Set trunk group n status (A/P/M/D)>
5. Type M to enable a manual trunk, or D to disable the trunk.