Note:
In the box with the new T1/E1 TDM modules, there will be aTelecom label
in a plastic envelope. Attach the Telecom label to the chassis cover as
described below.
Note:
The installation of these modules should be performed during low-traffic
periods or during times of scheduled maintenance.
Caution:
Before handling any components, follow the proper ESD grounding
procedures. Failure to do so could damage the card and its components.
Required Parts
The following parts are required to replace the transcoder DSP module.
•
ESD wrist strap
•
ESD-safe location
•
New or replacement TDM module
•
Telecom label to attach to the chassis cover
Remove the TDM Module
1.
Remove the Acme Packet 3900 cover.
The T1/E1 TDM module is installed into the rear panel of the chassis and attached
through a PCI Express x4 connector. The module is raised about a quarter of an
inch off of the chassis PCB.
Part of the module is a piece of metal connected at 90 degrees to the module
PCB. This piece contains the four T1/E1 ports visible when looking at the rear
panel of the chassis. The metal extends on either side of the port area. When
Chapter 5
Maintenance Without Power
5-19
