User`s guide

Chapter 8 Special Features: Modem Emulation 73
AT&Cn
DCD Option. The Digi device controls the DCD output in accordance with
the parameter supplied. The parameter value, if valid is written to S21 bit 5.
&C0 DCD remains ON at all times.
&C1 DCD follows the state of the connection
OK n=0 or 1
ERROR
Otherwise
AT&Dn
DTR Option. This command interprets the ON to OFF transition of the DTR
signal from the DTE in accordance with the parameter supplied. The
parameter value, if valid, is written to S21 bits 3 and 4. Also see S25.
&D0 -DTR is ignored (assumed ON). Allows operation with DTEs which
do not provide DSR.
&D1DTR drop is interpreted by the modem as if the asynchronous escape
sequence had been entered. The modem returns to asynchronous
command state without disconnecting.
&D2DTR drop causes the modem to hang up. Auto-answer is inhibited.
(Default.)
&D3DTR drop causes the modem to perform a soft reset as if the Z
command were received. The &Y setting determines which profile is loaded.
OK n=0 to 3
ERROR
Otherwise
AT&Fn
Restore Factory Configuration (Profile)
The device loads the factory default configuration (profile). The factory
defaults are identified for each command and in the S-Register descriptions.
A configuration (profile) consists of a subset of S-Registers.
&F0Restore factory configuration 0.
&F1Restore factory configuration 1.
OK n=0 or 1
ERROR
Otherwise
AT&Jn Accepted but ignored.
OK n=0 or 1
ERROR
Otherwise
AT&Gn Accepted but ignored.
OK n=0 or 1
ERROR
Otherwise
AT&Jn Accepted but ignored.
OK n=0 or 1
ERROR
Otherwise
AT&Kn
Flow control. This command defines the DTE/DCE flow control mechanism.
The parameter value, if valid, is written to S39 bits 0, 1, and 2.
&K0 Disables flow control
&K3 Enables RTS/CTS flow control (Default)
&K4 Enables XON/XOFF flow control
&K5 Enables transparent XON/XOFF flow control
&K6 Enables both RTS/CTS and XON/XOFF flow control.
OK n=0,3,4,5,or
6
ERROR
Otherwise
AT&Ln Accepted but ignored.
OK n=0, 1, 2
ERROR
Otherwise
AT&Mn Accepted but ignored.
OK n=0, 1, 2
ERROR
Otherwise
AT&Pn Accepted but ignored.
OK n=0, 1, 2
ERROR
Otherwise
AT&Qn Accepted but ignored.
OK n=0 to 8
ERROR
Otherwise
AT
Command
Function
Result
Code