AT Commands Phone Terminal Terminated
39
AT+CHUP
Hang Up Call
AT+CRC
Cellular Result Codes
AT+VTS
DTMF and Tone Generation
Parameter:
<mode>:
<mode>
Description
0
Single mode
Default setting
1
Alternating voice/fax
4-127
Reserved
Description:
Request hang-up.
Execution command:
AT+CHUP
Test command:
AT+CHUP=?
Shows if the command is supported.
Description:
Decides if the extended format of incoming call indication is used or not. When
enabled, an incoming call is indicated by the unsolicited result code
instead
of the normal unsolicited result code
.
Set command:
AT+CRC=
[<mode>]
Read command:
AT+CRC?
Displays the current <mode> setting.
Test command:
AT+CRC=?
Shows if the command is supported.
Test command
response:
+CMOD: (list of supported <mode>s)
Parameter:
<mode>:
<mode>
Description
0
Disables extended format
Default setting
1
Enables extended format
Description:
Allows the transmission of DTMF tones. The command is write-only.
Note:
The command is used only during voice calls.
Set command:
AT+VTS=
<DTMF>
Test command:
AT+VTS=?
Shows if the command is supported.
Parameter:
<DTMF>:
A character string with entries in the set ‘0-9, #, *, A-D’ separated by commas. The
string ‘8,9’ sends two DTMF tones, ‘8’ and ‘9’.