Nortel 7400 Hardware Installation page 82

82 Chapter 7 Multiservice Switch 7480 installation
NN10600-175 6.1S2
The inside-mount seismic anchoring kit requires you to attach two L-shaped
brackets to the inside of the cabinet. You must then anchor the brackets to a
concrete floor. The inside-mount anchoring kit fully isolates the seismic
brackets from the ground. The outside-mount anchoring kit does not.
The outside-mount seismic anchoring kit requires you to attach two L-shaped
brackets to the outside of the cabinet. You must then anchor the brackets to a
concrete floor.
You cannot provide seismic protection for a cabinet on a raised floor.