The Nokia 7250 IXR X1 is compliant with major global standards and directives:

Clean the copper surface of the grounding lug and cable. Strip the insulation off the end of a 6 AWG grounding wire.

Align the mounting brackets with the rack holes and secure the chassis using cage nuts and screws. Check Alignment: Ensure the unit is level and stable. 3.3 Grounding the Chassis