User Manual

65
Chapter 4—AT Commands, S-Registers, Result Codes
Command: &Qn Asynchronous Communications Mode
Values: n = 0, 5, 6, 8, or 9
Default: 5
Description: &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 mo-
dem falls back according to the setting in S36.
Command: &Sn Data Set Ready (DSR) Control
Values: n = 0 or 1
Default: 0
Description: &S0 DSR is always high (on).
&S1 DSR goes high only during a connection.
Command: &Tn V.54 Test Commands
Values: n = 0, 1, 3 or 6
Default: None
Description: &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, you must use the escape sequence (+++AT) before typing &T0.
Command: &V Display Current Settings
Values: n/a
Description: Displays the active modem settings.
Command: &Wn Store Current Configuration
Values: n = 0, 1
Default: 1
Description: &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 com
mand. See also the &F command.
&W1 Clears user default settings from nonvolatile memory and causes the factory de-
faults to be loaded at power-on or following the ATZ command.
Command: &Zn=x Store Dialing Command
Values: n = 0, 1, 2 = Dialing command string
Default: None
Description: Stores dialing command x in memory location y. Dial the stored number using the
command ATDS=n.
Command: \An Select Maximum MNP Block Size
Values: n = 0, 1, 2, or 3
Default: 3
Description: \A0 64-character maximum.
\A1 128-character maximum.
\A2 192-character maximum.
\A3 256-character maximum.