Multitech MT5634ZBA-USB Monitor Speaker Mode, Modulation Handshake, Return Online to Data Mode

	Chapter 4 - AT Commands, S-Registers and Result Codes
Command: Mn	Monitor Speaker Mode
Values:	n = 0, 1, 2, or 3
Default:	1
Description:M0	Speaker always off.
M1	Speaker on until carrier signal detected.
M2	Speaker always on when modem is off-hook.
M3	Speaker on until carrier is detected, except while dialing.
Command: Nn	Modulation Handshake
Values:	n = 0 or 1
Default:	1
Description:N0	Modem performs handshake only at communication standard specified by S37 and the B
	command.
N1	Modem begins handshake at communication standard specified by S37 and the B com-
	mand. During handshake, fallback to a lower speed can occur.
Command: On	Return Online to Data Mode
Values:	0, 1, 3
Default:	None
Description:O0	Exit online command mode and return to data mode (see +++AT<CR> escape sequence ).
O1	Issue a retrain and return to online data mode.
O3	Issue a rate renegotiation and return to data mode.
Command: P	Pulse Dialing
Values:	P, T
Default:	T
Description:	Configures the modem for pulse (non-touch-tone) dialing. Dialed digits are pulsed until a T
	command or dial modifier is received.
Command: Qn	Result Codes Enable/Disable
Values:	n = 0 or 1
Default:	0
Description:Q0	Enable result codes.
Q1	Disable result codes.
Q2	Returns an OK for backward compatibility with some software.
Command: Sr=n Set Register Value
Values:	r = S-register number; n varies
Default:	None
Description:	Set value of register Sr to value of n, where n is entered in decimal format. E.g., S0=1.
Command: Sr?	Read Register Value
Values:	r = S-register number
Default:	None
Description:	Read value of register Sr and display it in 3-digit decimal form. E.g., S2? gives the re-
	sponse 043.
Command: T	Tone Dialing
Values:	P, T
Default:	T
Description:	Configures the modem for DTMF (touch-tone) dialing. Dialed digits are tone dialed until a P
	command or dial modifier is received.

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