CXR V.34bis series, Operation And Installation Manual

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Modes and Configurations
V.34bis Series Standalone & Rackmount Modems
47
Password Access
The automatic modem password security operation, particularly useful with
synchronous terminals, provides an automatic exchange of the password
between the modems before data transmission is allowed. When a phone
number being dialed has an associated "P" attribute in the calling modem,
the modem will wait for a password prompt to be received from the
answering modem. If the calling modem receives the prompt in a few
seconds it will respond with the "PASSWORD" stored with the dialed
number and the "P" attribute. It will then allow data transmissions to
proceed. If no prompt is received then it will allow transmissions when the
timer expires in a few seconds. The answering modem for this type security
will store the password expected, and when received it will proceed with
data transmissions.
To set up automatic modem password access
security:
1. Store the password in the "PASSWORD" field in both modems. Use
the "P" attribute plus an “A" attribute (or a "D" attribute if dialing is by
AT commands from an asynchronous terminal keyboard) in the calling
modem, and the "N" attribute in the answering modem.
2. Enable the pass-through access security in the answering modem with
the
AT%SA1
command.
3. For additional security, the answer back security and/or a second
password transmission may be implemented as in call back security.
For this operation include the "C" attribute instead of the "N" attribute in
the answering modem. See answer back and call back security
operations. For the automatic operation to function with the front panel
push button switch, the number dialed will be the first location in the
phone list with an "A" attribute stored and the "P" attribute must be
stored with the "A". If a second password request is used with call
back security the AT%SB1 command is set in the answer modem, and
it must also be set in the originate modem.
Examples:
1. Pass Through. The modem should prompt for name and password. If
a correct name/password combination is entered then the connection is
allowed to pass through.
AT%SA2 enable answer security
AT%SP1 prompts turned on
AT%ST0 allow 1 attempt
AT%SL0 case sensitivity disabled
AT&Z0:Joe:XXYZZ::::N store Joe