Multi-Tech Systems MT9234MU User Manual

Chapter 4 – Remote Configuration 

Multi-Tech Systems, Inc. MT9234MU User Guide (S000409C) 

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Remote configuration is a network management tool that allows you to configure modems anywhere in 
your network from one location. With password protected remote configuration, you can issue AT 
commands to a remote MT9324MU modem for maintenance or troubleshooting as if you were on site. 

The following steps are valid regardless of whether the connection is established by the local or the 
remote Multi-Tech modem.  

1. 

Establish a data connection with a remote MT9324MU modem. 

2. 

Send three remote configuration escape characters followed by AT and the setup password, and 
press ENTER. Example: %%%ATMTSMODEM. You have four tries to enter the correct password 
before being disconnected. If the password is correct, the remote modem responds with OK. 

3. 

You can now send AT commands to configure the remote modem.  

4. 

When you have finished configuring the remote modem, save the new configuration by typing 
AT&W0, and pressing Enter. 

5. Type 

ATO and press Enter to exit remote configuration. You can then break the connection in the 

normal way. 

If you hang up while you are in remote configuration mode, it may lock up the remote modem. 

Multi-Tech modems are shipped with a default setup password (MTSMODEM). Because anyone who has 
an owner’s manual knows the default setup password, for security you should change the password and 
possibly also the remote configuration escape character.  

1.  Open a data communications program such as HyperTerminal. 
2.  To change the password, type AT#S=xxxxxxxx, where xxxxxxxx stands for the password, and 

press ENTER. The password can include any keyboard character, and must be one to eight 
characters long. The modem responds with OK. 

3.  The new password is saved automatically. You can now either enter more AT commands or exit 

the data communications program. The next time you remotely configure the modem you must 
use the new setup password. 

Note: You can only change the setup password locally; you cannot do it remotely. Also, passwords are 
case sensitive. The next time you enter the password, it must be in the same case as you set it up. 

To increase security, you can change a remote modem’s remote configuration escape character. The 
remote configuration escape character is stored in register S9. The factory default is 37, which is the 
ASCII code for the percent character (%). For ASCII code characters, refer to Appendix E.  Setting S9 to 
0 (zero) disables remote configuration entirely—but if you do this remotely, you won’t be able to change it 
back remotely! 

1.  Establish a remote configuration link with the remote modem as described in “Basic Procedure.” 
2. Type 

ATS9=n, where n is the ASCII code for the new remote configuration escape character, 

then press ENTER. 

3.  Save the new value by typing AT&W and pressing ENTER. 
4. Type 

ATO<CR> to exit remote configuration.