Multi-Tech Systems MT2834BL, MT2834BA manual Remote Configuration and Callback Security AT Commands

Chapter 7 - Callback Security and Remote Configuration

7.4Remote Configuration and Callback Security AT Commands

When you have callback security enabled for the modem, anyone trying to connect with the modem will be required to furnish a password. The #CBN command allows you to enter passwords for each of the 30 memory locations used for callback security. The length of each password can be up to 10 characters, but must be at least 6 characters. Any ASCII character can be used.

The format for this command is AT#CBNyyxxxxxxxx<CR> with xxxxxxxx representing the password and yy being the memory location (0-29). Each callback password (xxxxxxxx) must start with a non-numeric character.

Callback Security Enable/Disable #DB

The purpose of this command is to enable or disable (default setting) your modem's callback security option. Once this command is executed, you modem will undergo some significant changes. For example, the phone number memory locations (N0 through N9) will be used for passwords and phone numbers. In other words, you will not be able to dial from memory or use the DTR dialing feature.

You can turn on callback security by typing AT#DB1 or AT#DB2 and pressing <CR>. If you want to engage both remote and local password security, use the #DB1 command. This sets up the modem so you have to provide passwords to dial into the modem and to dial out. For remote password security only, use the #DB2 command. This allows the local operator to dial out without providing the LOGIN and SETUP passwords. Use #DB3 when calling another modem with callback security active.

Change LOGIN Password #I

The default LOGIN password for your modem is "MULTI-TECH". If you choose to activate callback security, you should change the LOGIN password using this command in the following format:

AT#Ixxxxxxxxxx<CR> (where xxxxxxxxxxxxxxxx is the current LOGIN password). Your modem will respond with "OK", indicating that you can enter the new LOGIN password as follows:

AT#I=yyyyyyyyyy<CR>

You can select any combination of keyboard characters (upper/lower case sensitive) between six and ten characters long.

Change SETUP Password #S

The default SETUP password for your modem is "SMODEMSETUP". If you choose to activate callback security, you should change the SETUP password using this command in the following format:

AT#Stttttttttt<CR> (where tttttttttt is the current SETUP password). Your modem will respond with "OK", indicating that you can enter the new SETUP password as follows:

AT#s=uuuuuuuuuu<CR>

You can select any combination of keyboard characters (upper/lower case sensitive) between six and ten characters long.

Erase Callback Password #RCBNxx

This command erases the single callback password specified by xx (0 through 29).

Erase Callback Phone Number #RDNxx

This command erases the single phone number specified by xx (0 through 29).

Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide 74