Multi-Tech Systems MTA128NT 用户手册

1. If you are using another operating system, turn on your computer and start your data

communications program.

2. The TR (Terminal Ready) LED lights to indicate that your computer is ready to communicate with the TA.

Type AT in the communications program’s terminal window and press ENTER. The TA should respond
with 

OK.

If it doesn’t, go to Chapter 5 for troubleshooting help.

3. To view your current configuration, type AT!L in the terminal window. Switch Type and Data Protocol

information appear. The fields for SPIDs (Service Provider Identification) and for Voice and Data
Directory Numbers will be empty. Your TA ships with Auto-TEI (terminal endpoint identifier) as its default.
Refer to before you start in Chapter 3 for your network, call control configuration, and comport settings.

4. To change one or more settings, type AT@CONFIG, press ENTER, and follow the ConfigMenu

directions.

5. Type AT&W and press ENTER to store your settings. 

The following is a description of the menus.
Network Configuration Menu.

 Select this menu to configure network parameters such as the switch type,

data and voice TEIs, and datea nd voice MSNs. When you finish, select Save Hetwork Configuration to save
your work.
Call Control Configuration Menu

. Select this menu to change how the MTA128ST/NT originates and

answers calls. Options include Auto Answer, Rings to Answer, Dialing Method, and Persistent DTR Dialing.
Data Protocols Menu

. Select this menu to change the rate adaption protocol used by the MTA128ST/NT.

. Select this menu to store up to ten phone numbers with a maximum of 25 characters

each. Stored number 0 is the phone number that is dialed if you enable persistent DTR dialing.
Port Control Configuration Menu

. Select this menu to configure the MTA128ST/NT’s serial port, including

how the MTA128ST/NT responds to control signals on the RS232 interface.
POTS Port Configuration Menu

. Select this menu to configure the MTA128ST/NT’s POTS port which

includes the ring type, frequency, and pattern.
Help Menu.

 Select this menu for help on navigating through the MTA128ST/NT menu system.

You can configure the MTA128ST/NT by using AT commands, just as you would configure an analog modem.

Use this method if you prefer to work with AT commands or if you have a special requirement not
addressed by either of the configuration utilities.

Using AT Commands to Configure the MTA128ST/NT
1. Connect a VT100/ANSI-compatible terminal, or a computer that has a communications program that has

VT100/ANSI terminal emulation, to the MTA128ST/NT’s serial port.

2. Turn on the MTA128ST/NT. The MTA128ST/NT automatically detects whether an ASCII or ANSI

terminal is in use and adjusts accordingly.

3. Start a data communication program and select the COM port where the MTA128ST/NT is connected.

4. Referring to your 

Before Your Start notes, enter the desired AT commands in the terminal window of the

data communications program.

5. When you finish making changes, use the 

&W command to save your new configuration, and to select it

to automatically load when the MTA128ST/NT is turned on.

6. Quit the data communications program.

For more information on AT commands, see the MTA128ST and MTA128NT  AT Commands documents