Comtrol AT Commands - Manual (Page 57)

AT Commands for CX81801/CX06833/CX81300/CX06827 Modems Reference Manual
102184B Conexant 3-31
+IFC - DTE-Modem Local Flow Control
This extended-format compound parameter controls the operation of local flow control
between the DTE and the modem during the data state when V.42 error control is used, or
when fallback to non-error control mode is specified to include buffering and flow
control. It accepts two numeric subparameters.
Syntax
+IFC=[<modem_by_DTE>[,<DTE_by_modem>]]
Defined Values
<modem_by_DTE> Specifies the method to be used by the DTE to control the
flow of received data from the modem.
0 None.
1
XON/XOFF on transmitted data (XON/XOFF on
transmit data); do not pass XON/XOFF
characters to the remote modem.
2 Circuit 133 (Ready for Receiving). (Default.)
3 DC1/DC3 on circuit 103 (Transmitted Data) with
DC1/DC3 characters being passed through to the
remote DCE in addition to being acted upon for
local flow control
<DTE_by_modem> Specifies the method to be used by the modem to control the
flow of transmitted data from the DTE.
0 None.
1
XON/XOFF on received data.
2 CTS/RTS. (Default.)
Reporting Current or Selected Values
Command: +IFC?
Response: +IFC: <modem_by_DTE>,<DTE_by_modem>
Example: +IFC: 2,2 For the defaults.
Reporting Supported Range of Parameter Values
Command: +IFC=?
Response: +IFC: (<modem_by_DTE> range),(<DTE_by_modem> range)
Example: +IFC: (0-3),(0-2)