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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.