Multi-Tech Systems GPRS (MTSMC-G) ユーザーズマニュアル

Chapter 13 – Specific AT Commands  

Multi-Tech Systems, Inc. Wireless GSM/GPRS AT Commands (Document Number S000293I) 

118 

Description:  

This command allows a DTMF tone to be played on the current speaker. DTMF, gain, and duration can 
be set.  

This command is only used to play a DTMF tone. To send a DTMF over the GSM network, use 

the +VTS command. 

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: AT+WDTMF=<mode>[,<dtmf>,<gain>,<duration>] 

syntax: OK or +CME ERROR: <err> 

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 
 

 

 

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: AT+WDWL 

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