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Chapter 10 – V24-V25 Commands
Multi-Tech Systems, Inc. CDMA AT Commands Reference Guide (PN S000294K) 58
Chapter 10V.24-V.25
Commands
Refer to ITU-T Recommendation V.25 specifications if you desire more details about the following commands.
Fixed DTE Rate +IPR
Description: This command is used to specify the baud rate for the module DATA port. The factory default value is
115200. When autobaud is specified (AT+IPR=0), the module sets the DATA port operating baud rate to the
detected DTE baud rate. The AT&F command restores the baud rate value that was active when the last
AT&W command was used.
Note: The use of baud rates below 9600 may affect the operability of some module software features; e.g.,
TCP App.
Syntax: Command syntax: AT+IPR
Command Possible Responses
AT+IPR?
Note: Read syntax.
+IPR: 9600
OK
Note: Current rate is 9600 bps
AT+IPR=?
Note: List of supported <rate> values,[(list of
fixed-only <rate> values)]
+IPR: (0,1200,2400,4800,9600,19200), (45,50,75,
110,150,300,600,38400,57600,115200,230400)
OK Note: Possible value (
*)
AT+IPR=38400
Note: Disable autobaud and set rate to 38400 bps
OK
AT+IPR=0 Note: Enable autobaud OK
(*) The first list of values are the baud rates that are detectable by the module autobaud feature. The second
list of values are the module DATA port supported baud rates
.
DTE-DCE Character Framing +ICF
Description: This command is used to specify the UART start-stop (asynchronous) character framing for the module
DATA port. The factory default value is 3,3. The AT&F command restores the value that was active when
the last AT&W command was used.
Values: <format>
0 Autodetect (Not supported)
1 8 Data 2 Stop (Not supported)
2 8 Data 1 Parity 1 Stop (Not supported)
3 8 Data 1 Stop (Supported)
4 7 Data 2 Stop (Not Supported)
5 7 Data 1 Parity 1 Stop (Not Supported)
6 7 Data 1 Stop (Not Supported)
<parity>
0 Odd (Supported)
1 Even (Supported)
2 Mark (Supported)
3 None (Supported)
Note: The supported format values are software release specific. Use the +ICF=? command to display the valid
format values for the software release in use.
Syntax: Command syntax: AT+ICF= <format>, <parity>
Command Possible Responses
AT+ICF=3,3
Note: Set values.
OK
Note: New values set
AT+ICF?
Note: Display current settings.
+ICF: 3,3
OK
Note: Current values
AT+ICF=?
Note: Display valid parameter ranges.
+ICF: (3-5),(0-3)
OK
Note: Possible values
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