User manual

Chapter 7 Special Features: Modem Emulation 47
ATD<IP>:
<TCP
PORT>
This command directs the Digi Device Server to go on-line, dial according to
the IP address entered as follow 191.1.2.3:12 and attempt to establish a
TCP connection. If no dial string is supplied, the Digi Device Server will
respond no dial tone.
Note: If the ATD command is issued before the S1 register has cleared, the
modem will respond with the NO CARRIER result code.
Dial Modifiers. The valid dial string parameters are described below. Punc-
tuation characters may be used for clarity with parentheses, hyphen, and
spaces being ignored.
ATEn
Command echo. The Digi Device Server enables or disables the echo of
characters to the DTE according to the parameter supplied. The parameter
value, if valid, is written to S14 bit 1.
E0 : Disables command echo
E1 : Enables command echo
OK n=0 or 1
ERROR
Otherwise
ATH
Disconnect (Hang up) command
This command initiates a hang up sequence.
H0 : Disconnect the TCP session if the modem is currently on line.
H1 : If on-hook, the Digi Device Server will go off-hook and enter command
mode.
OK n=0 or 1
ERROR
Otherwise
ATIn
Identification command
I0 reports product code. Example: Digi Device server
I1 reports 255
I2 reports “OK”
I3 reports “OK”
I4 reports DIGI DS_TS
I5 reports “OK”
I6 reports “OK”
I7 reports “OK”
I8 reports “ERROR”
I9 reports “ERROR”
OK n=0 or 9
ERROR
Otherwise
AT
Command
Function
Result
Code