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MODEM 325 AND MODEM 325 CARD
5.11.1 O
W
PERATING
The modem operates like a standard V.32 modem, except that several additional AT commands are
available to access security. With these commands, any user can set the passwords and turn security on
when the modem is not already secure.
5.11.2 O
W
PERATING
A secure modem will not allow data transfer between its host and a remote host until a correct password is
received from the calling party. If an incorrect password is received, the secure modem disconnects. The
front panel is not locked out, since the primary reason for security is to prevent unauthorized dial-up
access.
5.11.3 R
O
EMOTE
PERATION
The remote modem must pass security validation before the secure modem will allow data transfer. Once
communication has been established, the secure modem prompts the originator with
PLEASE ENTER YOUR PASSWORD ===>>
To respond to the password prompt, enter $ as a lead-in character followed by the password.
After receiving the $, the modem collects up to ten characters until the user presses the carriage return.
Entering more than ten characters causes the secure modem to disconnect. After receiving a valid
password the secure modem sends PW ACCEPTED to the originating modem.
5.11.4 L
O
OCAL
PERATION
When accessing the local modem, the password is not required except when the user wants to change a
security option. To change a password or to turn security on or off, the user must enter a password when
entering the appropriate AT commands. The EIA-232 signals to the DTE are not affected by security.
5.11.5 P
ASSWORDS
Two passwords of up to ten characters each are stored in the modem's nonvolatile memory. AT
commands change the passwords. Backspace and escape keys are not supported for password entry. The
passwords can consist of any printable characters except a dollar sign, a comma, and a space. Passwords
are case-sensitive.
The passwords have the same priority level and may be substituted for each other. This can be helpful
in some situations, such as when the user forgets one of the passwords.
5.11.6 LCD I
NDICATION OF
The front-panel LCD indicates whether security is enabled or not. If security is disabled, screens
referring to security do not appear on the LCD. If security is enabled, main #1 consists of the following
display:
SECURE 9600
XXXX
4 6
S
ITHOUT
ECURITY
S
ITH
ECURITY
S
ECURITY
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