Moxa Technologies G2150I manual Dtmf Signals +VTD, +VTS, Redial Last Telephone Number Atdl

OnCell G2150I AT Command Set Call Control Commands

DTMF Signals: +VTD, +VTS

+VTD description: The product enables the user application to send DTMF tones over the GSM network. This command is used to define tone duration (the default value is 70 ms ± 5 ms, according to 3GPP 23.014).

Command syntax: AT+VTD=<n>

Command	Possible responses
AT+VTD=6	OK
Note: To define 600 ms tone duration	Note: Command valid
AT+VTD=0	OK
Note: To set the default value (70±5 ms)
AT+VTD?	+VTD: <n>
Note: interrogate current tone duration	OK
AT+VTD=?	+VTD: (0-255)
	OK

Defined values: <n>: tone duration

This refers to an integer <n> that defines the length of tones emitted as a result of the +VTS command. This does not affect the D command. A value different than zero causes a tone of duration <n>*100 milliseconds. A value of zero (default value) causes a tone duration of 70 ± 5 ms. Note: The value is used modulo 256.

+VTS description: The product enables the user application to send DTMF tones over the GSM network. This command enables tones to be transmitted, only when there is an active call.

Command syntax: AT+VTS=<Tone>

Command	Possible responses
AT+VTS=“A”	OK
	Note: Command valid
AT+VTS=“11”	+CME ERROR: 3
	Note: If the <Tone> is wrong
AT+VTS=“4”	+CME ERROR: 3
	Note: If there is no communication
AT+VTS=“1”;+VTS=“3”;+VTS=“#”
OK
Note: send tone sequence 13#
Defined values: <Tone>: DTMF tone to transmit
<Tone> is in {0-9,*,#,A,B,C,D}

Redial Last Telephone Number: ATDL

Description: This command is used by the application to redial the last number used in the ATD command. The last number dialed is displayed followed by “;” for voice calls only

Command syntax: ATDL

Command	Possible responses
ATDL	0146290800;
Note: Redial last number	OK
	Note: Last call was a voice call. Command valid
Defined values: No parameter
	4-5