Motorola SM56 manual +Vtx, Enter Voice-Transmission Mode

Table 4: AT+ (Plus) Commands

Command	Option	Description
	D	Generate default DTMF Tone, default duration.
	{t,n}	t specifies a DTMF tone; t = 0-9
		n specifies tone duration n/100 seconds; n = 1-500
	{f,g,n}	f and g specify a tone pair, f Hz and g Hz; in the
		range n
		Specifies tone-pair duration n/100 seconds; n = 1-
		500
	Example:	AT+VTS=4,{},[1000,1300,50],8,{*,5},[,,100],5
		This example specifies the following sequence:
		1.		Play DTMF 4 for the duration stored in +VTD
		2.		Play silence for the duration stored in +VTD
		3.		Play tone pair at 1000 Hz and 1300 Hz for 500 ms
		4.		Play DTMF 8 for a duration stored in +VTD
		5. Play DTMF * for 50 ms
		6.		Play silence for 1 second
		7.		Play DTMF 5 for the duration stored in +VTD
+VTX		Enter Voice-Transmission Mode
		Data/Fax/Speakerphone modem only
			Note
				The speakerphone state does not have to be reset
				after recording to the line or playing a message
				to the line. The baud rate is not set before the
				StartPlay and StartRecord commands. The baud
				rate is not reset after the StopPlay and
				StopRecord commands.

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