Multitech MultiModem MT5600ZDX - Page 37

Chapter 3 - AT Commands, S-Registers and Result Codes
37
Command: Z n Modem Reset
Values:
n = 0 or 1
Default: None
Description: Z0 Reset modem to profile saved by the last
&W command
(profile 0).
Z1 Reset and restore stored profile 1.
Command: &C
n Data Carrier Detect (DCD) Control
Values:
n = 0 or 1
Default: 1
Description: &C0 Ignores the state of carrier on the remote modem and
DCD circuit is always on.
&C1 DCD turns on when the remote modem’s carrier signal
is detected and DCD is off when the carrier signal is not
detected.
Command: &D
n Data Terminal Ready (DTR) Control
Values:
n = 0, 1, 2, or 3
Default: 2
Description: &D0 Modem ignores the true status of the DTR signal and
responds as if it is always on.
&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 (Auto-Answer is encumbered).
&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 or 1
Default: None
Description: &F0 Restore factory configuration 0.
&F1 Restore factory configuration 1.
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.