Multitech MULTIMODEM MT5600ZDX Owner's Manual page 37

Command: Z n
Values:
Default:
Description: Z0
Z1
Command: &C n
Values:
Default:
Description: &C0
&C1
Command: &D n
Values:
Default:
Description: &D0
&D1
&D2
&D3
Command: &F n
Values:
Default:
Description: &F0
&F1
Command: &G n
Values:
Default:
Description: &G0
&G1
&G2
Chapter 3 - AT Commands, S-Registers and Result Codes
Modem Reset
n = 0 or 1
None
Reset modem to profile saved by the last &W command
(profile 0).
Reset and restore stored profile 1.
Data Carrier Detect (DCD) Control
n = 0 or 1
1
Ignores the state of carrier on the remote modem and
DCD circuit is always on.
DCD turns on when the remote modem's carrier signal
is detected and DCD is off when the carrier signal is not
detected.
Data Terminal Ready (DTR) Control
n = 0, 1, 2, or 3
2
Modem ignores the true status of the DTR signal and
responds as if it is always on.
When DTR drops while in online data mode, the modem
enters command mode, issues an OK, and remains
connected.
When DTR drops while in online data mode, the modem
hangs up (Auto-Answer is encumbered).
When DTR drops, the modem hangs up and resets as
if an ATZ command were issued.
Load Factory Default Settings
n = 0 or 1
None
Restore factory configuration 0.
Restore factory configuration 1.
V.22bis Guard Tone Control
n = 0, 1, or 2
0
Disable guard tone.
Enable 550 Hz guard tone.
Enable 1800 Hz guard tone.
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