User's Manual

Security
Modem 3600 8-3
After receiving the $, the secure remote modem accepts the security
code and waits for a carriage return. Entering more than ten characters is
invalid and causes the secure modem to disconnect. Entering a valid
password causes the calling party's DTE to display PASSWORD
ACCEPTED.
Local Operation
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. EIA-232 signals to the DTE are
not affected by security in command mode.
Passwords
Two passwords of up to ten characters each can be 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,
comma, or space. Passwords are case sensitive.
The passwords have the same priority level and are interchangeable
with each other. This can be helpful in situations such as when the user
forgets one of the passwords.
LCD Indication of Security
The front panel LCD indicates whether security is on or off. If disabled,
the LCD appears as if the security does not exist. If enabled, Main Menu
#1 consists of the following display:
SECURE 33600
XXXX
Restrictions in Security Operation
If the caller gives the wrong password, while security is enabled, the
modem will disconnect.
Low Security Commands
The following AT commands operate low security: