Perle Systems SCS, STS manual Virtual Modem Initialization Commands

C	Virtual Modem AT
	Commands

Appendix C

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	Quiet mode. Determines if result codes will be	n=0, no result codes will be sent.
	sent to the connected terminal. Basic results	n=1, result codes will be sent.
	codes are OK, CONNECT, RING, NO	(default)
	CARRIER, and ERROR.
	Setting quiet mode also suppresses the "RING"
	message for incoming calls.
ATVn	Verbose mode. Determines if result codes are	n=0, display as numeric values.
	displayed as text or numeric values.	n=1, display as text. (default)
ATEn	Echo mode. Determines whether characters sent	n=0, disable echo.
	from the serial device will be echoed back by	n=1, enable echo. (default)
	the IOLAN when VModem is in "command"
	mode.
+++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	Register=0, sets "manual answer"
	controls the "auto answer" behavior.	mode
	In "manual" mode, the IOLAN will not accept	Register=1-255, "auto answer"
	incoming sessions until an ATA is issued by the	mode (default)
	serial device. In "auto answer" mode, the
	IOLAN will automatically accept an incoming
	connection request.

IOLAN SDS/SCS/STS User’s Guide, Version 3.6 349