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This chapter explains how to configure and test the I-modem using AT
commands and terminal software.
Overview
Configuring the I-modem
Before you can make any calls, you need to configure the I-modem to
work on your ISDN line. If you haven't ordered an ISDN line, see
Chapter 3, Ordering ISDN Service.
Run your communications software in Terminal mode and then use your
software to send the I-modem AT commands.
What You Should Know
Directory Numbers
Directory Numbers (DNs) take the form of ordinary seven- or ten-digit
telephone numbers. Be sure to leave off the area code from your DN.
Service Profile Identifiers
Service Profile Identifiers (SPIDs) tell the telephone company about any
special services and features to which you've subscribed. SPIDs can be up
to 20 digits long.
Terminal Endpoint Identifier
The TEI is a one or two digit number that permanently identify a your
connection with the central office switch.
Configuring with AT commands
Chapter 7
Configuring With
AT Commands
7-1
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