At+Ccwa Call Waiting Control - Quectel EC25 Command Manual

AT+CCFC=0,2
+CCFC: 1,1,"+8615021012496",145,,,
OK
AT+CCFC=0,4
OK
AT+CCFC=0,2
+CCFC: 0,255
OK

11.2. AT+CCWA Call Waiting Control

The command allows control of the call waiting supplementary service according to 3GPP TS 22.083.
Activation, deactivation and status query are supported.
AT+CCWA Call Waiting Control
Test Command
AT+CCWA=?
Read Command
AT+CCWA?
Write Command
AT+CCWA[=<n>][,<mode>[,<class>]]
EC25&EC21_AT_Commands_Manual
//Query the status of CFU without specifying <class>
//Erase the registered CFU destination number
//Query the status, no destination number
Response
+CCWA: (list of supported <n>s)
OK
Response
+CCWA: <n>
OK
Response
TA controls the call waiting supplementary service. Activation,
deactivation and status query are supported.
If <mode> is not equal to 2 and the command is executed
successfully:
OK
If <mode>=2 and the command is executed successfully:
+CCWA:
<status>,<class1>[<CR><LF>+CCWA:<status>,<class2>[.
..]]
OK
If there is any error related to ME functionality:
+CME ERROR: <err>
LTE Module Series
EC25&EC21 AT Commands Manual
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