When mounted in slide rails, the chassis will stop when the locking clip pin on the
chassis slide rail engages with the equipment rack slide rail.
7.
Push the locking clip latches on both sides of the chassis inwards to unlock the
slide rails from each other.
8.
Pull the the Acme Packet 3900 chassis completely from the slide rails.
9.
Pull the unit with the slide rails still attached out of the equipment rack, and move it
to an ESD-safe location.
Note:
One person should support the Acme Packet 3900 from below while the
other person removes the chassis from the equipment rack.
Replacing Transcoder DSP Modules
Up to 5 transcoder DSP modules may be installed on the Acme Packet 3900 printed
circuit board (PCB).
There are slots for installing the transcoder DSP modules in one location on the Acme
Packet 3900 PCB. The slots are numbered 0-4. Slot 0 is the closest slot to the edge
of the unit when looking at it from the front of the chassis. Transcoder DSP modules
should be installed consecutively in numerical order, starting with slot 0.
Chapter 5
Maintenance Without Power
5-13
