0049-2702-XXX Alliance Series Modems – USER MANUAL
08/05/2010
Rev. A
Page 90 of 197
Clearing the Password
To clear the front panel password from memory, select CLEAR from the PASSWORD screen.
The clear-password confirmation screen will be displayed. Press pushbutton 2 to confirm that
you want to clear the password.
If no password is stored, the ALX will be able to connect to other modems that are not equipped
to use or are not configured to use an automatic password APP. To
temporarily
disable the
automatic password, see the previous section.
Manual-Response Password Protection (MPP)
MPP is available on all ALX models in asynchronous 2-Wire-Dial Hayes emulation mode only.
MPP will function only for connections made using error correction (V.42/V.42bis or MNP)
or buffer mode.
The ALX can be configured for two types of MPP:
•
MPP without callback –
The ALX will pass a connection on to the DTE interface only
after it receives a valid password.
•
MPP with callback
– The answer ALX will call back an authorized user after he or she
enters a valid password.
Both types of security operation provide security on incoming calls by requiring remote users to
manually enter a valid password. In addition, access to Hayes-compatible commands for
viewing and storing phone numbers is password protected.
The MPP process is summarized below:
•
A remote (originating) modem calls the local (answer) ALX modem.
•
Local modem answers.
•
Remote user sends carriage return [CR].
•
Answer modem sends PASSWORD? query to remote DTE display.
•
Remote user sends unique password (assigned to remote modem).
•
Answer modem confirms password and grants access (if programmed for MPP without
callback) or initiates security callback (if programmed for MPP with callback).
