
AT Commands for the MT5656ZDX, MT5600ZDX, MT5600BA/BL-Series Modems
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Multi-Tech Systems, Inc. Commands Reference Guide (PN S000273D)
Command: Vn Result Code Format
Values: n = 0 or 1
Default: 1
Description: V0 Displays result codes as digits (terse response).
V1 Displays result codes as words (verbose response)
MT5600BA LCD:
Command: Wn Connect Message Control
Values: n = 0, 1, or 2
Default: 0
Description: W0 The CONNECT result code reports the serial port speed only.
W1 The CONNECT result code reports the line speed, the error correction protocol,
and the serial port speed, respectively.
W2 The CONNECT result code reports the line speed only.
Note: See also the \V command
Command: Xn Result Code Selection
Values: n = 0–4
Default: Country Dependent
Description: This command selects which result message subset the modem will use to inform the
computer of the results of commands.
X0 Sends OK, CONNECT, RING, NO CARRIER, ERROR and NO ANSWER; does not
look for dial tone or busy signal.
MT5600BA LCD:
X1 Sends X0 messages and connect speed; doesn’t look for dial tone or busy signal.
X2 Sends X1 messages with NO DIALTONE; does not look for busy signal.
X3 Sends X1 messages with BUSY; does not look for dial tone.
X4 Sends all messages, including NO DIALTONE and BUSY.
5600BA LCD:
Note: In fax mode, the only message sent to indicate a connection is: CONNECT without a
speed indication. See also the \V command.
Command: Yn Long Space Disconnect
Values: n = 0 or 1
Default: 0
Description: Y0 Disables sending/responding to a long space break signal on disconnect.
Y1 Enables long space disconnect. In non-error correction mode, the modem sends a
long space of four seconds prior to going on-hook. In non-error correction mode, the
modem responds to the receipt of a long space (i.e., a break signal greater than 1.6
seconds) by going on-hook.
Command: Zn Modem Reset
Values: n = 0 or 1
Default: None
Description: The modem performs a soft reset and restores (recalls) the configuration profile according
to the parameter supplied. If no parameter is specified, zero is assumed.
Z0 Resets modem and restores Profile 0.
Z1 Resets modem and restores Profile 1.
Note: See also the &F and &W commands.
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