Rainbow Electronics FARGO MAESTRO 100 (with TCP_IP) - Manual (Page 596)

Audio Commands
DTMF Decoding Mode +WDDM
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WM_DEV_OAT_UGD_049 - 001 VOLUME 4 August 23, 2007
21.13.3 Parameters and Defined Values
<mode>:
requested operation
0 stop DTMF decoding (default value)
1 start DTMF decoding
<char>: decoded DTMF character
The possible decoded DTMF characters are: [0-9],[A-D],*, #
<duration>: duration of the incoming character in milliseconds
range: at least 10, depending on DTMF decoder behaviour and
up to approximately 1200000 (20 minutes), value limited by the
network capabilities.
21.13.4 Parameter Storage
The <mode> parameter is stored in EEPROM without using the AT&W command.
The default value can be restored using AT&F.
21.13.5 Examples
Command Responses
AT+WDDM=?
Note: Test command
+WDDM: (0,1)
AT+WDDM=1
Note: Start DTMF decoding
OK
AT+WDDM=1
Note: Start DTMF decoding
+CME ERROR: 558
Note: DTMF decoding already started by another client.
AT+WDDM?
Note: Read current value
+ WDDM: 1
OK
Note: Decoding started
+ WDDI: ”*”,60
Note: ‘*’ char was decoded during 60ms