Cable routing recommendations

Interface cables and power cords should be separately routed. Reasonable cable routing can improve efficiency by facilitating installation and removal of fan trays and some other components. Follow these guidelines when you route the cables:

• Interface cables of a 12508E and 12518E are routed through the upper and lower cable management brackets on the chassis and bound at cabling racks on chassis sides, depending on the available equipment room condition.

• Put all the data signal cable adapters neatly under the chassis (instead of any places outside the chassis in case of unexpected damages).

• The power cords run along the left-rear of the chassis and out of the chassis either from the chassis top or the raised floor depending on the equipment room conditions (power distribution rack, lightning protection box, and connector strip, etc.) of the exchange office.

• Attach cables as near the switch as possible. The cables between the fixing point and switch interfaces must be bound loosely.

• Long cables can be bound with cable ties. Do not bind cables at the air exhaust vent to prevent the cables from aging too fast. For more information, see "Appendix E Cable management."

• To identify cables, you can stick labels on them. For more information, see "Appendix F Engineering labels for cables."