Multi-Tech Systems CDMA Wireless Modem manual DTE-DCE Local Flow Control +IFC, Set DCD Signal &C

Chapter 11 – V24-V25 Commands

DTE-DCE Local Flow Control +IFC

Description: This command is used to control the operation of local serial connection flow control between the data terminal device and the mobile.

Values:	<Tx>
	0: None	Transmit data flow control disabled.
	1: XON/XOFF	Remove Xon (0x19) and Xoff (0x17) characters from data stream.
	2: Hardware	Use RTS (Request To Send) signal (default)
	3: XON/XOFF	Leave Xon (0x19) and Xoff (0x17) characters in data stream.
	<Rx>
	0: None	Receive data flow control disabled.
	1: XON/XOFF	Remove Xon (0x19) and Xoff (0x17) characters from data stream.
	2: Hardware	Use CTS (Clear To Send) signal (default)

Syntax:	Command syntax: AT+IFC=<Tx>,<Rx>
	Command	Possible Responses
	AT+IFC=?	+IFC: (0-3),(0-2)
	Note: Display valid parameter ranges.	OK
		Note: Valid parameter ranges
	AT+IFC?	+IFC: 2,2
	Note: Display current settings.	OK
		Note: Default values are 2,2 (hardware flow control).
	AT+IFC=3	OK
	Note: Set Tx flow control to XON/XOFF.	Note: New Tx flow control value set.
	AT+IFC=,1	OK
	Note: Set Rx flow control to XON/XOFF.	Note: New Rx flow control value set.
	AT+IFC?	+IFC: 3,1
	Note: Display current settings.	OK
		Note: Settings displayed.
	AT+IFC=2,2	OK
	Note: Set Tx and Rx flow control to hardware.	Note: New Tx and Rx flow control values set.

Set DCD Signal &C

Description:	This command controls the Data Carrier Detect (DCD) signal.
Syntax:	Command syntax: AT&C
	Command	Possible Responses
	AT&C0	OK
	Note: DCD always on	Note: Command valid
	AT&C1	OK
	Note: DCD matches state in accordance with	Note: Command valid
	the specified service
	AT&C2	OK
	Note: Wink indicator on channel disconnect	Note: Command valid

Multi-Tech Systems, Inc. CDMA Wireless AT Commands - PN S000294C 77