AT Commands Modem Terminated 159
AT&D DTR Response
AT+IFC Cable Interface DTE-DCE Flow Control
Description: Controls all actions initiated by data terminal ready from DTE
Set command: AT&D[<value>]
Parameter:
<value>:
<value> Description
0 Ignore
Default setting
1 When in on-line data mode: Switch to on-line command
mode
All other states: Disconnect and switch to off-line command
mode
2 Disconnect and switch to off-line command mode
Description: Controls the flow between the infrared modem and the computer when in on-line data
mode. No flow control is enabled in any of the command modes.
Set command: AT+IFC=[<by_te>,[<by_ta>]]
Read command: AT+IFC? Displays the current <by_te> and <by_ta> settings.
Test command: AT+IFC=? Shows if the command is supported.
Test command
response:
+IFC: (list of supported <by_te>s),(list of supported <by_ta>s)
Parameters:
<by_te>:
<by_te> Description
0 No flow control on DTE
1 Xon/Xoff flow control on DCE. Control characters are
removed by the DCE interface
2 RTS flow control on DCE
Default setting
3 Xon/Xoff flow control on DCE
Control characters are passed to the remote DCE/DTE
<by_ta>:
<by_ta> Description
0 No flow control on DCE
1 Xon/Xoff flow control on DTE
2 CTS flow control on DCE
Default setting
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