PIONEERPOS G24-LC manual April 15 G24-L AT Commands Reference Manual 263, +Mtkp?

Chapter 3: AT Commands Reference

Send DTMF

This proactive SIM service command requests the G24-L to send a DTMF string after successfully establishing a call. This command can be used at any time during a call. The G24-L does not locally generate audible DTMF tones to play to the user.

This command can be activated/deactivated by the user using the command +MTKP=24. The setting defined by the user is retained during the currently active call and is restored after a power cycle. If a DTMF command is sent to the G24-L while this command is disabled, the G24-L sends an "Unable to process" terminal response to the SIM.

The terminal response indicating that the command has been performed successfully is sent after the complete DTMF string is sent to the network by the G24-L.If the command is sent in idle mode, or if a call is terminated or put on hold before the complete DTMF string is sent to the network, the G24-L informs the SIM using terminal response 20, with the additional information "Not in speech call". If the user indicates the need to end the proactive SIM application session while the G24-L is sending the DTMF string, the G24-L stops sending the string and sends the following terminal response, "Proactive SIM application session terminated by the user".

If the SIM includes an alpha identifier in the command, the G24-L displays this string for the user in the form of a +MTKP unsolicited response. In all other cases, no information is sent to the user.

Command Type	Syntax	Response/Action	Remarks
Set	+MTKP=24,<enable	OK	The Set command
	/disable>	or:	activates and deactivates
		+CME ERROR: <err>	the send DTMF
			command.
Unsolicited		+MTKP=24,<alpha identifier
Response		string>
Read	+MTKP?	+MTKP: 24,<status>	The Read command
			displays the current status
			of the send DTMF
			command.

April 15, 2008 G24-L AT Commands Reference Manual 3-263