User`s guide

Security
8-8 Modem 3600
Setting Passwords $Pn=pw$pw
Select a password between 4 and 34 printable ASCII characters.
To store the password enter
AT$Pn=pw$pw
where n is the user number (0-50) and pw is the new password which is
entered twice to ensure that is has been entered correctly.
The $ character is used as the marker between the dual password entries
and cannot be used as part of the password.
Passwords cannot be recalled from nonvolatile memory.
Note
The superuser password is critical because the security
feature cannot be configured without it.
After logon as USER 1 and gaining superuser privileges, enter the $Pn
command to modify passwords.
For the superuser enter
AT$P0=pw$pw
For user 1 enter:
AT$P1=pw$pw
Record the passwords in your personal records.
IMPORTANT: Systems administrator functions cannot be accessed
without it. If you forget the superuser password, contact Technical
Support. Refer to the “Calling Technical Support” section on page 12-2.
Set Security Levels $Ln=m
The System Administrator (superuser) assigns each user with a security
level by entering the $Ln=m command where n is the user number and
m is the security level.
Set User Callback Number $Cn=m
The callback number, used with level 2 or 3 security, is dialed by the
modem after a user has successfully called in from a remote location
and entered his password.