Siemens M20 Terminal Technical Description page 51

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AT+IFC Set TE-TA local data flow control
Test command Response
AT+IFC=? +IFC: (list of supported <dce_by_dte>s), (list of supported <dte_by_dce>s) OK
Parameter
see set command
Read command Response
AT+IFC? +IFC: <dce_by_dte>,<dte_by_dce> OK
Note:
Parameter
see set command
Set command Response
AT+IFC=[<dce_by This parameter setting determines the data flow control on the serial interface for data mode.
_dte>[,<dte_by_dc
OK
e>]]
Parameter
<dce_by_dte> specifies the method which will be used by TE when data is received from TA
<dte_by_dce> specifies the method which will be used by TA when data is received from TE
Reference Note
V.25ter There are no pins for line 133 at AD6426. TTP applies line 105 (RTS) for this method.
Version 8 dated 15.03.00
This flow control is applied for data mode
0 None
1 XON/XOFF, don't pass characters on to data stack
2 line 133: ready for receiving
3 XON/XOFF, pass characters on to data stack
0 None
1 XON/XOFF
2 line 106: clear to send (CTS)
AT command interface
A
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