AT Commands Reference Guide
80529ST10815A Rev.2– 2017-09-14
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&D - Data Terminal Ready (DTR) Control
2 - When the MODULE is connected, the High to Low transition of DTR pin sets
the device in command mode and the current connection is closed.
3 - C108/1 operation enabled.
4 - C108/1 operation disabled.
Note: if AT&D2 been issued and the DTR has been tied Low, autoanswering is
inhibited and it is possible to answer only issuing command ATA.
Note: if parameter is omitted, the command has the same behaviour of AT&D0
Reference
V25ter
Flow Control - &K
SELINT 2
&K - Flow Control
Set command controls the RS232 flow control behaviour.
Parameter:
<n>
0 - no flow control
3 - hardware bi-directional flow control (both RTS/CTS active)
(factory default)
Note: if parameter is omitted, the command has the same behaviour
as AT&K0.
Note: &K has no Read Command. To verify the current setting of
&K, simply check the settings of the active profile issuing AT&V.
Note: Hardware flow control (AT&K3) is not active in command
mode.
AT&K[<n>]
Note: &K has no Read Command. To verify the current setting of &K, simply check the settings of the
active profile issuing AT&V.
Note: Hardware flow control (AT&K3) is not active in command mode.
Fixed DTE Interface Rate - +IPR
+IPR - Fixed DTE Interface Rate
AT+IPR=<rate> Set command specifies the DTE speed (UART only) at which the device accepts
commands during command mode operations. The command could be use to fix the
DTE-DCE interface speed.
Note: DTE speed of USB does not change.
Parameter:
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