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Chapter 3 - Software Installation and Configuration
Configuration
Run the ISDN MTA128ST-USB configuration utility for North American customized ISDN settings.
Note: For Europe, run the configuration utility to customize the settings of the terminal adapter such as
configuring Multiple Subscriber Numbers (MSNs).
Configure the unit to match your ISDN service and the remote terminal adapter (TA) with any of three
methods listed below:
•
ISDN MTA128ST-USB Configuration Utility
This configuration utility is recommended for computers running Windows 2000/98/95
operating systems. Because it is a software-based utility, you can use it to create and store
as many configurations as you want.
•
Windows 2000/98/95 Dial-Up Networking
Dial-Up Networking (DUN) allows systems using Windows 2000/98/95 to easily configure a
modem connection to another computer or network system.
•
AT Commands
If you prefer using AT commands or want to fine tune the operation of your unit, configure
your unit by using AT commands and S-registers much as you would configure an analog
modem. Enter these commands in your data communication program’s terminal mode. AT
commands are described in detail in your on-line User Guide.
Whatever method you use to configure your MTA128ST-USB, complete the following Network
Configuration planning sheets before beginning the configuration process. Refer to the planning sheets
during the configuration procedure.

Network Configuration

Network Switch Type
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Select the network switch type your ISDN service provider uses at its local central office. You can set
the MTA128ST-USB to NET3 (DSS1), VN4, INS64, U.S. NI-1, A T&T 5ESS, or DMS-100. If you don’t
know the switch type, get the information from your ISDN service provider.
AT command: !C0=
Data TEI
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Data TEI (Terminal Endpoint Identifier) is the TEI assigned to the data channel. Y ou can select Auto
TEI, a fixed TEI, or Disable. A TEI is a number used by the central office switch to uniquely identify
each device connected to the network. When it uses dynamic TEI assignments (Auto TEI), the
central office switch assigns a TEI each time the unit connects to the network. However, the ISDN
service provider may assign a fixed TEI at subscription time, in which case you must configure the
unit with the fixed TEI number. You can also disable the channel, which may be useful when multiple
units are attached to a network terminator bus.
AT command: !D3=
Voice TEI
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Voice TEI is the TEI assigned to the voice channel. Choices are: Auto TEI, a fixed TEI number, or
Disable.
AT command: *!D3=