Quectel EC25 Command Manual page 181

Parameter
<n> 0
1
1X
2
2X
3
4
Example
ATD10086;
OK
+CCWA: "02154450293",129,1
AT+CHLD=2
OK
AT+CLCC
+CLCC: 1,0,1,0,0,"10086",129
+CLCC: 2,1,0,0,0,"02154450293",129
OK
AT+CHLD=21
OK
AT+CLCC
+CLCC: 1,0,0,0,0,"10086",129
+CLCC: 2,1,1,0,1,"02154450293",129
OK
AT+CHLD=3
OK
AT+CLCC
+CLCC: 1,0,0,0,1,"10086",129
+CLCC: 2,1,0,0,1,"02154450293",129
EC25&EC21_AT_Commands_Manual
Terminate all held calls or UDUB (User Determined User Busy) for a waiting call. If
a call is waiting, terminate the waiting call. Otherwise, terminate all held calls (if
any)
Terminate all active calls (if any) and accept the other call (waiting call or held
call).
Terminate the specific call number X (X=1-7)
Place all active calls on hold (if any) and accept the other call (waiting call or held
call) as the active call
Place all active calls except call X (X=1-7) on hold
Add the held call to the active calls
Connects the two calls and disconnects the subscriber from both calls (ECT)
//Add a held call to the active calls in order to set up a
EC25&EC21 AT Commands Manual
//Establish a call
//Indication of a call that has been waiting
//Place the active call on hold and accept the waiting call as
the active call
//The first call on hold
//The second call be active
//Place the active call except call X=1 on hold
//The first call be active
//The second call on hold
conference (multiparty) call
LTE Module Series
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