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Chapter 13 – Specific AT Commands
Multi-Tech Systems, Inc. Wireless GSM/GPRS AT Commands (Document Number S000293I) 118
Play DTMF Tone +WDTMF
Description: This command allows a DTMF tone to be played on the current speaker. DTMF, gain, and duration can
be set.
Note: This command is only used to play a DTMF tone. To send a DTMF over the GSM network, use
the +VTS command.
Values: <mode>
0 Stop playing.
1 Play a DTMF tone
<dtmf> Sets the DTMF to play in (mandatory if <mode>=1).
Value must be in {0-9,*,#,A,B,C,D}
<gain> (0-15) Sets tone gain. The values are identical to those of the +WTONE (speaker) command.
Range is 0 to 15 (see array on previous page). By default, the value is 9.
<duration> (0-50) Sets the tone duration (unit of 100 ms).
Range 0 to 50. Default 0 (1-> 0,1 s., 50 -> 5 s.)
When this parameter is 0 (default value), the duration is infinite, and the DTMF tone
can be stopped by AT+WDTMF=0.
Syntax: Command syntax: AT+WDTMF=<mode>[,<dtmf>,<gain>,<duration>]
Response syntax: OK or +CME ERROR: <err>
Command Possible responses
AT+WDTMF=1,"*",9,50
Note: Play a DTMF tone
OK
Note: Done
AT+WDTMF=0
Note: Stop playing
OK
Note: Done
AT+WDTMF=?
Note: Test command
+WDTMF: (0-1),(0-9,*,#,A,B,C,D),(0-15),(0-50)
OK
Note: Done
AT+WDTMF?
Note: Current value
ERROR
Downloading +WDWL
Description: This command switches the product to download mode.
AT+WDWL allows the download process to launch on UART1 only.
Downloading is performed using the 1K-XMODEM protocol.
Important Note: Software damages may occur if power is lost or if a hardware reset occurs during the
downloading phase. This would seriously affect the modem.
Values: No parameters
Syntax: Command syntax: AT+WDWL
Command Possible responses
AT+WDWL
Note: Switch on downloading mode
+WDWL: 0
Note: Start the downloading
…
Note: Downloading in progress
AT+CFUN=1
Note: Reset the product at the end
OK
Note: Reset completed. New software running
AT+WDWL? +WDWL: VO2.12
OK