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 +CRING instead
of the normal unsolicited result code RING.
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’.
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