Appendixes
MTASR3
69
Command: Y
n
Long Space Disconnect
Values:
n
= 0
Default: 0
Description: Y0 Disable sending or responding to long space break signal on disconnect.
Y1 Enable sending or responding to long space break signal on disconnect. (Not supported.)
Command: Z
n
Modem Reset
Values:
n
= 0 or 1
Default: None
Description: Z0 Reset modem to profile saved by the last
&W
command.
Z1 Same as Z0.
Command: &B
n
V.32 Auto Retrain
Values:
n
= 1
Default: 1
Description: &B0 Disable V.32 auto retrain. (Not supported.)
&B1 Enable V.32 auto retrain.
Command: &C
n
Data Carrier Detect (DCD) Control
Values:
n
= 0 or 1
Default: 1
Description: &C0 Force Data Carrier Detect signal high.
&C1 Let Data Carrier Detect follow carrier signal.
Command: &D
n
Data Terminal Ready (DTR) Control
Values:
n
= 0, 1, 2, or 3
Default: 2
Description: &D0 Modem ignores DTR signal.
&D1 When DTR drops while in online data mode, the modem enters command mode, issues an OK,
and remains connected.
&D2 When DTR drops while in online data mode, the modem hangs up.
&D3 When DTR drops, the modem hangs up and resets as if an ATZ command were issued.
Command: &F
n
Load Factory Default Settings
Values:
n
= 0
Default: None
Description: &F0 Load factory settings as active configuration.
Command: &G
n
V.22bis Guard Tone Control
Values:
n
= 0, 1, or 2
Default: 0
Description: &G0 Disable guard tone.
&G1 Enable 550 Hz guard tone.
&G2 Enable 1800 Hz guard tone.
*: The
&G
command is not used in North America.
Command: &J
n
Auxiliary Relay Control
Values: n
= 0
Default: 0
Description: &J0 The auxiliary relay is never closed.
&J1 Not supported—responds ERROR.
Command: &K
n
Local Flow Control Selection
Values:
n
= 0, 3, or 4
Defaults: 3
Description: &K0 Flow control disabled.
&K3 Enable CTS/RTS hardware flow control.
&K4 Enable XON/XOFF software flow control.
Command: &M
n
Communications Mode
Values:
n
= 0
