Copper Transceivers
Copper transceivers are also available for the Acme Packet 3900 System. They are
removed and replaced similarly to the optical transceivers.
Maintenance Without Power
Some maintenance tasks must be performed after powering down the system.
•
Remove the chassis cover
•
Remove the chassis from an equipment rack
•
Remove and replace transcoder DSP modules
•
Remove and replace T1/E1 TDM modules
Remove the Chassis Cover
Caution:
Always gracefully power down the Acme Packet 3900 and then disconnect
the power supplies from the power source when removing the chassis cover.
1.
Ensure there is enough slack in the unit cabling to allow the chassis to slide
forward.
2.
Remove the power from the Acme Packet 3900.
3.
Loosen the two thumbscrews on the rear panel.
4.
Loosen the two thumbscrews on the front panel.
5.
Pull the Acme Packet 3900 to the front of the rack until the chassis assembly
stops.
6.
Push the chassis cover backwards about ½ inch.
7.
Lift the cover up until it is free of the chassis.
Removing the Unit from an Equipment Rack
1.
Power down the unit gracefully using the ACLI commands.
2.
Depress the power pushbutton.
3.
Remove the two power cords from the power supplies in the rear of the system.
4.
Remove and label all attached network cables and console cable from their
respective ports on the chassis.
5.
Loosen the thumbscrews that secure the Acme Packet 3900 to the equipment rack
slide rails.
6.
Slide the unit forward.
Chapter 5
Maintenance Without Power
5-12