Paradyne 3825Plus Quick Reference Manual page 8

If these settings are not appropriate, then change them to a setting compatible with
your current application.
The procedures for an AT recovery using an asynchronous terminal or personal
computer are listed in the following section. Read through these procedures before
performing a recovery:
1. Turn the modem Off and then ON. The modem performs a power-up self-test in
which all LEDs light. While this is running, repeatedly press the A key of your
DTE's keyboard (or keep the key depressed if your keyboard automatically repeats
characters that way). Keep doing this until A s (or a s) appear on your DTE screen.
(You may use all uppercase or all lowercase characters.)
At least three consecutive A s must be entered within a 2-second time interval.
If these characters are not echoed back to the DTE screen after the power-up
self-test is complete, then the modem is still in Dumb mode and maintains its
current configuration. Turn the modem Off and then ON again, and repeat Step 1.
2. Once the characters are echoed back to the DTE,
TYPE: T***
(The case of this character must be consistent with the case used in Step 1. Mixed
case prefixes such as aT or At are not recognized.)
This must be entered within 10 seconds after receiving the echoed characters.
Press Enter.
The screen displays OK.
The modem is now in AT Recovery mode, and remains in this state until a Save or
power reset occurs. While in this mode, you can use AT commands to make any
necessary changes to configuration options.
Keep in mind that the &C command is changed to Forced On (&C0), the &M and
&Q commands are changed to Async mode with AT commands enabled (&M0 and
&Q0), and the &S command is changed to Forced On (&S0). If these settings are
not appropriate, then reset them to a desired choice before exiting AT Recovery
mode.
3. To save changes, use the &W command:
TYPE: AT&W n
Where: n is one of the following storage areas:
0 for Active (Saved)
1 for Customer 1
2 for Customer 2
Press Enter.
The modem exits AT Recovery mode and returns to its previous application
environment. Only the Active (Saved) area affects modem operation. To move a
Customer area to Active (Saved), use the Z command.
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