Hitachi GR2000 Series Installation Manual page 408

1. Stop the operation of the GBIC to be removed. Charge the following
commands from the control terminal:
[Input type] maintenance close nif <nif_no> line <line_no> (nif_no = NIF number
being the object; line_no = LINE number being the object.) *1
2. If necessary, delete the applicable configuration defining information.
3. Confirm before the removal that the LED indication for GBIC of the line being the
object has turned to yellow.
*1 For details of the command, refer to the "Operation command reference",
Volume 4; 3.1 Maintenance