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Chapter 7 - Callback Security and Remote Configuration

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

7.4 Remote 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

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).

1 2 ... 69 70 71 72 73 74 75 76 77 78 79 ... 119 120

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