Multi-Tech Systems MT5634ZPW-PCI User Manual
Page 43
MT5634ZPW-PCI
43
3 AT Commands, S-Registers and Result Codes
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.