User manual

001-0003-822 Rev 1
Page 41 of 48
Serial Port Configuration Commands
AT+IPR
Serial Port baud rate:
? Displays current baud rate
=n Sets the baud rate to value of n. Default value is 115200.
AT+IFC
Hardware Flow Control:
? Displays current setting
=0,0 No Flow Control
=1,1 Xon/Xoff
=2,2 Hardware
AT&Dn
DTR Configuration:
This parameter determines how the modem responds when the Data Terminal
Ready circuit changes state. Default value AT&D0.
AT&D0 Ignore DTR.
AT&D1 If in the Online Data State, upon an on-to-off transition of DTR, the
modem enters Online Command State and issues an OK result code; the call
remains connected. Otherwise, ignore DTR.
AT&D2 If in the Online Data State or Online Command State upon an on-to-off
transition of DTR, the modem performs an orderly clear-down of the call and
returns to the command state. Automatic answer is disabled while DTR
remains off.
AT&D4 The modem auto-dials the default remote station (as determined by
AT+LCPRFL) upon an off-to-on transition of DTR and enters the Online Data
State. The modem ends the call and enters the command state upon an on-
to-off transition of DTR.
AT&D5 The modem auto-dials the default remote station (as determined by
AT+LCPRFL) upon an on-to-off transition of DTR and enters the Online Data
State. The modem ends the call and enters the command state upon an off-
to-on transition of DTR.
AT&D6 Upon an on-to-off transition of DTR, the modem performs an orderly
clear-down of any session and turns OFF the RF module. Upon an off-to-on
transition of DTR, the modem turns ON the RF module and reestablishes the
radio session as determined by the AT+LCGASC setting.
AT&D7 Upon an on-to-off transition of DTR, the modem performs an orderly
clear-down of any session and turns OFF the RF module. Upon an off-to-on
transition of DTR, the modem turns ON the RF module and reestablishes the
radio session.
AT&D8 Upon an on-to-off transition of DTR, the modem performs an orderly
clear-down of any session and turns OFF the RF module. Upon an off-to-on
transition of DTR, the modem turns ON the RF module and reestablishes the
radio session and auto-dials the default remote station (as determined by
AT+LCPRFL)
AT&Rn
RTS Configuration:
This parameter determines how the modem responds when the Request To
Send circuit changes state. The state of this parameter may be affected by the
state of the +IFC parameter and vise versa, the last issued command takes
precedence. Default value AT&R0
AT&R0 Ignore RTS.
AT&R2 RTS Flow Control, if RTS is off the terminal will not send data to the
host.