0049-2702-XXX Alliance Series Modems – USER MANUAL
08/05/2010
Rev. A
Page 89 of 197
APP with Callback: Storing the Password with Callback Number
This section applies only to APP with callback.
If you have followed these instructions to this point, the user password will be stored in the front
panel password screen of the originating modem, and a different password (the master password)
will be stored in the front panel password screen of the answer ALX. (The master password
should be different from the user password, because it can be used to access the answer ALX
directly, without callback. The master password allows access for troubleshooting from a remote
site.)
The final setup in configuring the modems for APP with callback is to store the user password in
the answer modem’s memory, along with the callback phone number, as explained below.
From the DTE, use the Hayes
AT &Z
command and /S (a special command) to store the user
password (capital A through Z, no spaces) and callback number in a specific phone cell. Phone
cells 2-49 may be used. The following example shows how to store a user password and
callback number in phone cell 3:
Enter
AT &Z3=T5551212/SGRAPE
The callback number (phone number of the originating modem) in this example is 555-1212
(with
T
used to specify tone dialing). The user password is GRAPE. (When the user password
is entered on the front panel password screen of the originating modem, a space is required at the
end. Do not use a space at the end when storing the password with the
AT &Z
command.)
A remote user can now call from the specified callback number, 555-1212. The originating ALX
will send the preprogrammed password GRAPE as part of the security handshake. The answer
ALX will confirm the password and connect by calling the originating modem back.
Disabling APP
Temporarily Disabling APP
To temporarily disable either type of APP, select CHANGE from the PASSWORD screen. The
change-password screen will be displayed. With the cursor in the first character position, press
pushbutton 2 (SKIP) until a space appears (flashing: ). Then press ENT. The password will be
disabled.
With the password disabled, the answer ALX can connect to another modem that is not equipped
to use or is not configured to use APP (i.e., if a password has not been entered in the front panel
change-password screen). However, it will not be able to connect to a modem that is
programmed with a password for APP without callback. To restore the password, replace the
space with the first character of the password and press ENT.
