AT Commands F-25
AT Commands
$I Display Dial Access Security Database
Allows the security administrator to display the Dial Access Security database.
%I
n Edit Connection Security Password (Asynchronous Mode)
Edit Connection Security password n, where n = 0 to 49. (Default is no password.)
Allows the security administrator to set a new password or change the existing
password. Passwords set by this command are verified during link negotiation by using
the $M command.
You can password protect the Connection Security password with the $P command. If
a password exists and has not been entered within the last two minutes, the modem
prompts you for this password first. Then it asks you for the Connection Security
password at the NEW PASSWORD: prompt.
NOTE
If the logon sequence has no password protection, then any user can set a new
password or edit an existing one by using the %I command.
Passwords must contain exactly five alphanumeric characters. The modem ignores
upper case or lower case and parity. You must type the old password correctly to enter
a new password. You must type the new password the same way both times for it to
take effect. Periods echo as you type the password.
You can enter up to fifty passwords for both the originating and answering modems
(see %In, where n = 0 to 49). During link negotiation, the originating modem sends
password 0 to the answering modem when $M1 is set. The answering modem checks
its list of passwords to see whether the password matches any of its passwords 0 though
49. If there is a match, the connection proceeds. If not, the connection fails. When $M2
is set on the answerer, if the originator’s password does not match one of the
answerer’s passwords, the answerer uses auto-logon string 5 to prompt the remote user
(up to three times) for the Connection Security password. If the Auto-Logon sequence
fails, the connection fails.
