5
• Install a special lightning arrester at the input end of outdoor signal lines (for example, E1/T1
line) to which interface modules of the router are connected to enhance the lightning protection
capability.
Rack-mounting
Before mounting the router to a rack, adhere to the following requirements:
• The rack is equipped with a good ventilation system.
• The rack is sturdy enough to support the router and its accessories.
• For heat dissipation and device maintenance, make sure the front and rear of the rack are at
least 0.8 m (2.62 ft) away from walls or other devices, and the headroom in the equipment room
is no less than 3 m (9.84 ft).
Installation accessories
Checklist before installation
Table 5 Checklist before installation
Item Requirements Result
Installation site Ventilation
• There is a minimum clearance of 10 cm (3.94 in)
around the inlet and outlet vents for heat
dissipation of the router chassis.
• A good ventilation system is available at the
installation site.
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