MC55 AT Command Set
9.7 AT+CCWA s
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MC55_ATC_V01.05 Page 227 of 469 2/10/04
Confidential / Released
+CCWA: <calling number>, <type of number>, <class>, , <CLI validity>
If <n>=1 and the call waiting supplementary service is enabled in the network, URC "+CCWA" indicates a wait-
ing call to the TE. It appears while the waiting call is still ringing.
URC 2
Indication of a call that has been waiting.
^SCWA
If <n>=1 and the call waiting supplementary service is enabled in the network, this URC indicates that a wait-
ing call rang when the ME was in online mode during a CSD call, but the calling p arty hung up before the ME
went back to command mode.
Command Description
The test command returns the list of supported "<n>"s.
The read command returns the current value of parameter <n>.
The write command controls the call waiting supplementary service. Activation, deactivati on and status query
are supported.
Parameter Description
Switch URCs "+CCWA" and "^SCWA" for call waiting on/off
0 Disable display of URCs "+CCWA" and "^SCWA"
1 Enable display of URCs "+CCWA" and "^SCWA"
Network operation to be performed for Supplementary service call wait ing
0 Disable call waiting (disable service)
1 Enable call waiting (enable service)
2 Query status of call waiting (query service status)
Integer or sum of integers each representing a class of information, i.e. a bearer service, telecommunication ser-
vice or bearer service group as defined in "GSM 02.04".
In the write command, parameter <class> specifies the class of the active call du ring which an incoming call
of any class is to be regarded as a waiting call.
In URC "+CCWA: <calling number>, <type of number>, <class>, , <CLI validity>", parameter
<class> specifies the class of the waiting call.
1Voice
2Data
<class> 2 (data) comprises all those <class> values between 16 and 128, that
are supported both by the network and the MS. This means, a setting made for
<class> 2 applies to all remaining data classes (if supported). In addition, you
can assign a different setting to a specific class. For example, yo u can activate
call waiting for all data classes, but deactivate it for a specific data class.
4Fax
[7] Voice, data and fax (1+2+4)
<n>(num)
<mode>(num)
<class>(num)