
V.250 AT COMMANDS
AT Commands for EV-DO-EV3 Modems
Syntax
Command Command type
AT+IFC=<by_te>,<by_ta> Set
AT+IFC? Read
AT+IFC=? Text
Parameters and Values
This device supports the following values:
<by_te> Flow control option for the data sent by DTE
0 No flow control.
2 C105 (RTS) Default: 2.
<by_ta> Flow control option for the data sent by modem
0 No flow control.
2 C106 (CTS) Default: 2.
Notes
Hardware flow control (AT+IFC=2,2) is not active in command mode.
This command is equivalent to &K.
If flow control behavior has been set with AT&Kn with a parameter that is not allowed by AT+IFC, the Read
command AT+IFC will return: +IFC: 0,0.
Software flow control (XON/XOFF) is not supported.
Reference: V.25ter.
DTE – Modem Local Rate Reporting +ILRR
Set command controls whether or not the +ILRR: <rate> information text is transmitted from the modem (module)
to the DTE.
Read command returns active parameter <n> setting.
Test command returns all supported values of the parameter <n>.
Syntax
Command Command type
AT+ILRR=<n> Set
AT+ILRR? Read
AT+ILRR=? Text
Parameters and Values
<n>
0 Local port speed rate reporting disabled. Default: 0.
1 Local port speed rate reporting enabled.
Notes
If enabled, this information is sent upon connection.
Reference: V.25ter.
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