Cisco Systems, Inc. Cisco IOS Dial Solutions, Indianapolis, IN: Cisco Press, 1998.
Access Technology—Software Center. (As stated in the first section, this is the location of the modem firmware needed to upgrade the modem software.)
Basic Modem Cabling and Configuration. (This is a starting point for understanding not just the configuration and cabling of modems, but also what is needed to manage this environment.)
Dial Solutions Command Reference. (This document provides additional examples of the show commands, as well as information on other commands that can be used for troubleshooting problems.)