An extended command must be terminated with a semicolon if another command follows
it in the same command line. The following table describes the extended AT
configuration commands.
Extended AT Configuration Commands Table
Command
Description
+IFC
†
TE2-MT2 Local Flow Control. This extended-format compound
parameter is used to control the operation of local flow control
between the TE2 and the MT2. The format is:
AT+IFC=
<DCE_by_DTE>,<DTE_by_DCE>
†
Where:
<DCE_by_DTE>
Specifies the method to be used by the DTE to control
the flow of received data from the DCE.
<DTE_by_DCE>
Specifies the method to be used by the DCE to control
the flow of transmitted data from the DTE.
The valid numeric variables for the
+IFC
command are as follows:
0
No Flow Control
1
Xon/Xoff
2
Hardware
By default, the modem is set up as
AT+IFC=2,2
†
to allow hardware flow control
in both directions.
+IPR
Fixed Rm Rate. This numeric extended-format parameter
specifies the data rate at which the MT2 will accept commands,
in addition to 1200bps or 9600bps (as required in EIA/TIA-602).
It may be used to select operation at rates at which the MT2 is
not capable of automatically detecting the data rate being used
by the TE2. Rm default rate set at 57600bps.
+ICF
†
Local RS-232 Interface Character Framing. This parameter
determines the character framing used at the local RS-232
interface. The syntax is:
AT+ICF=
<format>,<parity>
†
Where:
<format> is a single digit and determines the number of data bits, the presence of
a parity bit, and the number of stop bits in the start-stop frame according to the
following table:
<format>
Meaning
1
8 Data, 2 Stop
2
8 Data, 1 Parity, 1 Stop
3
8 Data, 1 Stop
<parity> is a single digit and determines how the parity bit is generated and
checked, if present, according to the following table:
<parity>
Meaning
