Applications Notes are designed to assist you in perfoming specific tasks associated with the use or operation of our products. Select a topic that best matches your need.
Modem AT Commands
A popular and very useful reference to the software "AT" (attention commands) used for configuring the modems. These commands are common to all of our modems built over the past 10 years. Some differences will be obvious such as modem speeds where you may have a 14.4 modem and the current speeds (commands) go up to 33.6K. Or, your modem may be a Dial-up modem and you see Leased Line modem commands. And lastly, there are the differences between a rack mount hardware configuration versus a stand alone (or desktop) version.

This guide is not for the casual user. It contains very specific definitions for each of the commands and can answer many questions you may have when attempting to sort out a setup string.
AT Command Guide.pdf (size = 245K)

Configuration Setup Guides
5615 Setup Guide (size = 2K)
5620 Setup Guide (size = 3K)
5630 Setup Guide (size = 5K)
5640 Setup Guide (size = 6K)
5980 CSU & 5981 NMU Setup Guide (size = 57K)
6400-VAR Installation Manual (size = 170K)

Advisory Notices
Smart Rack Grounding (size= 92K)
UCSA-03 (Universal Enclosure) (size = 151K)

"How To" Guide on using Windows HyperTerminal to assist in programming a modem
HyperTerm.pdf (size = 225K)

Troubleshooting a DDS Line with the 6453-VAR
6453 Testing.pdf
(size = 128K)

Configuring a rack mount modem through the front panel
AJ Modem Config.pdf (size = 31K)

CFIP Alarm Management Examples
CFIP-Alarm Mgmt.pdf
(size = 51K)

Circuit and cabling testing with the Smart Rack LTM (Line Test Module)
Smart Rack LTM.pdf (size = 67K)