User's Manual

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SERIES II INTELLIGENT DATA/FAX MODEMS
7.4 Remote Configuration and Callback Security
AT Commands
The following AT commands are used with Remote Configuration
and Callback Security features.
Assign Passwords for Callback Phone Numbers #CBN
When you have callback security enabled for the Series II 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.