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IOLAN DS1/TS2 User’s Guide, Version 4.5 202
Virtual Modem AT
Commands Appendix A
A
Virtual Modem Initialization Commands
Note:
Virtual Modem initialization commands are only supported on IOLAN firmware and
configurators version 3.2 or higher.
You can initialize the modem connection using any of the following commands:
Command Description Options
ATQn Quite mode. Determines if result codes will be
sent to the connected terminal. Basic results
codes are OK, CONNECT, RING, NO
CARRIER, and ERROR.
Setting quite mode also suppresses the "RING"
message for incoming calls.
n=0, no result codes will be sent.
n=1, result codes will be sent.
(default)
ATVn Verbose mode. Determines if result codes are
displayed as text or numeric values.
n=0, display as numeric values.
n=1, display as text. (default)
ATEn Echo mode. Determines whether characters sent
from the serial device will be echoed back by
the IOLAN when VModem is in "command"
mode.
n=0, disable echo.
n=1, enable echo. (default)
+++ATH Hang up. This command instructs the IOLAN to
terminate the current session and go into
"command" mode.
ATA Answer call. Instructs the VModem to accept
connection requests. VModem will give the
terminal up to 3 minutes to answer the call. If
the ATA is not received within 3 minutes, all
pending sync messages will be discarded.
ATI0 Return the modem manufacturer name.
ATI3 Return the modem model name.
ATS0 Sets the value of the S0 register. The S0 register
controls the "auto answer" behavior.
In "manual" mode, the IOLAN will not accept
incoming sessions until an ATA is issued by the
serial device. In "auto answer" mode, the
IOLAN will automatically accept an incoming
connection request.
Register=0, sets "manual answer"
mode
Register=1-255, "auto answer"
mode (default)
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