User guide

Chapter 8 – Communication Commands
Multi-Tech Systems, Inc. CDMA C1 AT Commands Reference Guide (PN S000478C) 26
Chapter 8 – Communication
Commands
Fixed DTE Rate +IPR
Description: This command is used to specify the baud rate for the modem DATA port. The factory default
value is 115200.
Note: Auto-baud (automatic detection of DTE rate) is not supported.
At power-up, the interface rate is set to the 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 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=115200
Note: Set interface rate to 115200 bps
OK
AT+IPR=?
Note: List of supported <rate> values,[(list
of fixed-only <rate> values)]
(),(300,600,1200,2400,4800,9600,
19200,38400,57600,115200,230400)
OK
Note: List of values showing possible baud rates
AT+IPR
Note: Set interface rate to factory default of
115200 bps
OK
DTE-DCE Local Flow Control +IFC
Description: This command is used to specify the UART flow control method. The factory default value is 2,2.
AT&F and AT&W are in effect. Software flow control is not supported.
Syntax: Command syntax: AT+IFC=<Tx>,<Rx>
Command Possible Responses
AT+IFC=2,2
Note: Set values
OK
Note: New values set.
AT+IFC
Note: Set factory default values
OK
AT+IFC?
Note: Display current settings.
+IFC: 2,2
OK
AT+IFC=?
Note: Display valid parameter ranges.
+IFC: (0-3),(0-2)
OK
Values: <Tx>
0 None Transmit data flow control disabled.
1 XON/XOFF Not Supported. Remove Xon (0x19) and Xoff (0x17) characters from data
stream.
2 Hardware Use RTS (Request To Send) signal (default)
3 XON/XOFF Not Supported. Leave Xon (0x19) and Xoff (0x17) characters in data stream.