Patton electronic 2190 user manual AT Commands, AT Command Sets

4.2 AT COMMANDS

Refer to the following AT Command Set Chart below. This chart identifies the command function and describes the elements of the command.

		AT Command Sets
Command		Description
A		Answer Command
		Forces the modem to go off-hook in answer mode
		without waiting for a ring.
A/		Repeat Last Commannd
		Repeat the last command line it executed. Not
		preceded with AT nor followed by pressing the
		[Enter] key.
Bn		Select ITU-T/BELL Mode
	ATB0	Selects ITU-T operation at 300bps or 1200bps during
		Call Establishment . (Default)
	ATB1	Selects BELL operation at 300bps or 1200bps during
		Call Establishment.
Dn		This command directs the modem to go on-line, dial
		according to the string entered and attempt to establish
		a connection.
En		Echo Command
	ATE0	Disables command echo
	ATE1	Enables command echo (Default)
Hn		Hang Up the Telephone Line
	ATH0	The modem will release the line if the modem is
		currently on-line, and will terminate any test (AT&T) that
		is in progress. (Default)
	ATH1	If on-hook, the modem will go off-hook and enter
		command mode.

		AT Command Sets (continued)
Command			Description
In			Identification Command
	ATI0		Reports product code "56000".
	ATI1		Calulates the ROM checksum and reports the least
			significant byte of the checksum in decimal.
	ATI2		Calculated the ROM checksum and compares it with
			the prestored checksum.
	ATI3		Reports firmware revision (F), basic model (e.g., V34),
			application code (A), and interface type code (I)
			typically in the form VF,FFF-V34_A1.
	ATI5		Reports Country Code parameter.
	ATI6		Reports modem data pump model and internal code
			revision.
Ln			Speaker Volume Control
	ATL0		Low speaker volume
	ATL1		Low speaker volume (Default)
	ATL2		Medium speaker volume
	ATL3		Higher speaker volume
Mn			Speaker Control
	ATM0		Speaker is always off.
	ATM1		Speaker is on during call establishment, but off when
			receiving carrier. (Default)
	ATM2		Speaker is always on.
	ATM3		Speaker is off when receiving carrier and during dialing,
			but on during answering.
Nn			Set Multi- or Fix- Mode Handshake
	ATN0		Automode detection is disabled.
	ATN1		Automode detection is enabled. (Default)
On			Return to On-Line Mode
	ATO0		Enters on-line data mode without a retrain. (Default)
	ATO1		Enters on-line data mode with a retrain before returning
			to on-line data mode.
P			Set Pulse Dial
			This command forces pulse dialing until the next T dial
			modifier or T command is received.
Qn			Quiet Results Code Control
	ATQ0		Enables result codes to the DTE. (Default)
	ATQ1		Disables result codes to the DTE.
Sr=n			Read / Write S-Register
	ATSr=n		Sets S-Register "r" to the value n.
	ATS?		Reports the value of S-Register r.

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