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Chapter 2 – AT Commands
Multi-Tech Systems, Inc. AT Commands Reference Guide (S000273F) 15
Command: -Kn MNP Extended Services
Values: n = 0, 1, or 2
Default: 0
Description: Enables or disables conversion of a V.42 LAPM connection to an MNP 10 connection.
-K0 Disables V.42 LAPM to MNP 10 conversion.
-K1 Enables V.42 LAPM to MNP 10 conversion.
-K2 Enables V.42 LAPM to MNP 10 conversion; inhibits MNP Extended Services
initiation during V.42 LAPM answer mode detection phase.
Command: ** Flash Memory Download
Values: n = 0, 1, or 2
Description: **0 Initiates download to flash memory at the last sensed speed.
**1 Initiates download to flash memory at 38.4K bps.
**2 Initiates download to flash memory at 57.6K bps.
Command: *B View Numbers in Blacklist
Values: n/a
Description: If blacklisting is in effect, AT*B displays a list of numbers for which the last call attempted
in the previous two hours failed. Permanently forbidden numbers as defined by country
requirements do not appear in this list. If no numbers are blacklisted, only the OK result
code is displayed.
Command: *D View Delayed Numbers
Values: n/a
Description: AT*D displays a list of delayed numbers, as defined in the *B command, together with
their delay times. If no numbers are delayed, only the OK result code is displayed.
Command: $Dn DTR Dialing
Notes: Use this command for the MT5600BR only.
To set DTR Dialing for the MT5600BA, use the LCD display panel on the modem.
See the MT5600BA User Guide for LCD display panel directions.
Values: n = 0 or 1
Default: 0
Description: The modem dials the number stored in the phone number location &Z0 with $D1 set when
the modem receives a high DTR signal.
$D0 Disables DTR dialing.
$D1 Enables DTR dialing.
Command: $Cn Key Abort
Values: 0, 1
Default: 1
Description: Key abort will work for both orignate and answer. The value can be stored.
$C0 Disables key abort.
$C1 Enables key abort.
Command: $SBn Serial Port Baud Rate
Note: Use this command with MT5600BA and MT5600BR only.
Values: n = speed in bits per second
Default: 57600
Description: $SB300 Sets serial port to 300 bps.
$SB1200 Sets serial port to 1200 bps.
$SB2400 Sets serial port to 2400 bps.
$SB4800 Sets serial port to 4800 bps.
$SB9600 Sets serial port to 9600 bps.
$SB19200 Sets serial port to 19200 bps.
$SB38400 Sets serial port to 38400 bps.
$SB57600 Sets serial port to 57600 bps.
$SB115200 Sets serial port to 115200 bps.
Note: See also the L5 command.