
B-1NortelNetworks 5399 Access Switch HardwareInstallation Guide
Appendix B
Modem Upgrade Instructions
The Model 5399 supportsup to 62 internal digital modems. The
modems are located on plug-in cardsthat reside on the module. This
chapter describeshow to install digital modem cards to upgrade the
number of modems on the module. This chapter alsodescribes how to
removem odem cardsf romthe m odule.
These installationinstructions contain a description of the following:
• Contents of the Kit
• Module RemovalInstructions
• Modem CardInstallation Instructions
• Removing Mode m Cards
Contents of the Kit
The modem upgrade kit contains:
• Two digital modem car ds
• One hardwarekit containing two screws per modem card
Required Tools
• A flat-tip screwdriver
• A Phillipsscrewdriver
• A pair of needle-nose pliers