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V1: Displays result codes as text (default).
Wn Result Code Option
W0: CONNECT result code reports DTE (modem to computer) speed.
W1: CONNECT result code reports DTE speed.
W2: CONNECT result code reports DCE (modem to modem) speed.
W3: CONNECT result code reports DTE speed and information on error cor-
rection and data compression.
W4: Reports protocol., data compression, and DTE data rate.
Zn Recall Stored Profile
This command instructs the modem chip set to go on-hook and restore the profile
specified by the n parameter. Z0 restores profile 0 and Z1 restores profile 1.
&Cn Data Carrier Detect (DCD) Control
Data Carrier Detect is a signal from the modem to your computer indicating that
the carrier signal is being received from a remote modem. DCD normally turns off
when the modem no longer detects the carrier signal.
&C0: The state of the carrier from the remote modem is ignored. DCD circuit is
always on.
&C1: DCD turns on when the remote modems carrier signal is detected, and off
when the carrier signal is not detected (default).
&Dn DTR Control
This command interprets how the modem responds to the state of the DTR
signal and changes to the DTR signal.
&D0: Ignore. The modem ignores the true status of DTR and treats it as always
on. This should only be used if your computer does not provide DTR to the
modem.
&D1: Modem switches from data mode to command mode when an on-to-off
transition of DTR occurs.
&D2: When DTR switches off, the modem goes on-hook and disables auto-an-
swer mode; when DTR switches on, auto-answer is enabled.
&D3: Turning off DTR re-initializes the modem and resets values except for the
UART registers.