Multitech MultiModem ZBA Series At Commands Reference Manual page 12

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Multi-Tech Systems, Inc. AT Commands for the MT5634 Family of Products (S000272J)
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&Kn Flow Control Selection
n = 0, 3, or 4
3
&K0 Disables flow control.
&K3 Enables CTS/RTS hardware flow control.
&K4 Enables XON/XOFF software flow control.
&Ln Leased-Line Operation
This command applies to the MT5634IND (Industrial Temperature Modem)
n = 0, 1, or 2
0
&L0 The modem is set for standard dial-up operation. Default.
&L1 The modem is set for leased line operation in originate mode.
&L2 The modem is set for leased line operation in answer mode.
Note: For &L1 and &L2, there is a 30-second window between power up and the starting of
the leased line handshake. During this time, you can turn off the command, if desired.
&Qn Asynchronous Communications Mode
n = 0, 5, 6, 8, or 9
5
&Q0 Asynchronous with data buffering. Same as \N0.
&Q5 Error control with data buffering. Same as \N3.
&Q6 Asynchronous with data buffering. Same as \N0.
&Q8 MNP error control mode. If MNP error control is not established, the modem falls
back according to the setting in S36.
&Q9 V.42 or MNP error control mode. If neither error control is established, the modem
falls back according to the setting in S36.
&Sn Data Set Ready (DSR) Control
n = 0 or 1
0
&S0 DSR is always high (on).
&S1 DSR goes high only during a connection.
&Tn V.54 Test Commands
n = 0, 1, 3 or 6
None
&T0 Abort. Stops any test in progress.
&T1 Initiates local analog loopback test.
&T3 Initiates local digital loopback test.
&T6 Initiates remote digital loopback test.
Note: To stop a test, use the escape sequence (+++AT) before typing &T0.
&V Display Current Settings
n/a
Displays the active modem settings, including the callback security settings if callback
security is enabled. If the setup password has been entered, it also displays the callback
security passwords.
&Wn Store Current Configuration
n = 0, 1
1
&W0 Stores current modem settings in nonvolatile memory and causes them to be loaded
in place of the factory defaults at power-on or following the ATZ command. See also
the &F command.
&W1 Clears user default settings from nonvolatile memory and causes the factory defaults
to be loaded at power-on or following the ATZ command.
Chapter 1 – AT Commands
12