Carrier Access 770-0125-AB User Manual

The BROADway chassis can be installed within a rack in two different ways:

!

Front-mounted (flush with the front of the rack)—This is the most commonly used 
mounting option when the rack is sturdily mounted to a wall.

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Center of gravity mounted (mid-mounted)—This mounting option is used when the rack is 
not sturdily constructed or only attached at the floor. This mounting option centers the chassis 
over the rails so there is less chance for the rack to tip. This is the most commonly used 
mounting option.

When determining which way you want to mount the chassis, use the option that will keep the rack 
stable and unlikely to tip over.

To prevent potential damage to interface and control cards, wait until the chassis is properly mounted 
before installing any control or line card options.

It is recommended that you leave 1 rack unit (RU) of space above and below the 

BROADway chassis within the rack for ease of accessibility.

To mount the chassis:

1. Determine whether your rack is a 19- or 23-inch rack.

2. Determine how you want to mount the chassis: front-mounted or center of gravity mounted. If 

you want to mount using the center of gravity position, you must move the mounting ear on 
each side of the chassis as shown in the following figure:

a.

Unscrew the four screws holding the mounting ear on one side of the chassis, rotate the 
mounting ear 180º, move the mounting ear to the next set of holes, and re-insert the four 
screws.

b. Repeat on the other side of the chassis.