Dte-Dce Local Flow Control +Ifc; Set Dcd Signal &C - Multitech CDMA Wireless Modem Reference Manual

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
1: XON/XOFF Remove Xon (0x19) and Xoff (0x17) characters from data stream.
2: Hardware
3: XON/XOFF Leave Xon (0x19) and Xoff (0x17) characters in data stream.
<Rx>
0: None
1: XON/XOFF Remove Xon (0x19) and Xoff (0x17) characters from data stream.
2: Hardware
Syntax: Command syntax: AT+IFC=<Tx>,<Rx>
Command
AT+IFC=?
Note: Display valid parameter ranges.
AT+IFC?
Note: Display current settings.
AT+IFC=3
Note: Set Tx flow control to XON/XOFF.
AT+IFC=,1
Note: Set Rx flow control to XON/XOFF.
AT+IFC?
Note: Display current settings.
AT+IFC=2,2
Note: Set Tx and Rx flow control to hardware.
Set DCD Signal &C
Description: This command controls the Data Carrier Detect (DCD) signal.
Syntax: Command syntax: AT&C
Command
AT&C0
Note: DCD always on
AT&C1
Note: DCD matches state in accordance with
the specified service
AT&C2
Note: Wink indicator on channel disconnect
Multi-Tech Systems, Inc. CDMA Wireless AT Commands - PN S000294C
Transmit data flow control disabled.
Use RTS (Request To Send) signal (default)
Receive data flow control disabled.
Use CTS (Clear To Send) signal (default)
Possible Responses
+IFC: (0-3),(0-2)
OK
Note: Valid parameter ranges
+IFC: 2,2
OK
Note: Default values are 2,2 (hardware flow control).
OK
Note: New Tx flow control value set.
OK
Note: New Rx flow control value set.
+IFC: 3,1
OK
Note: Settings displayed.
OK
Note: New Tx and Rx flow control values set.
Chapter 11 – V24-V25 Commands
Possible Responses
OK
Note: Command valid
OK
Note: Command valid
OK
Note: Command valid
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