MC55_ATC_V04.00 Page 202 of 475 3/17/06
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9.7 AT+CCWA Call Waiting
The AT+CCWA write command controls the "Call Waiting" supplementary service according to GSM 02.83. Acti-
vation, deactivation and status query are supported. The read command returns the current value of <n>.
Syntax
Unsolicited Result Codes
URC 1
Indication of a call that is currently waiting and can be accepted.
+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 party hung up before the ME
went back to command mode.
Test Command
AT+CCWA=?
Response(s)
+CCWA:(list of supported <n>s)
OK
Read Command
AT+CCWA?
Response(s)
+CCWA:<n>
OK
Write Command
AT+CCWA=[[<n>][, <mode>][, <class>]]
Response(s)
If <mode> is not equal 2 and command successful:
OK
If <mode>= 2 and command successful:
+CCWA: <status>, <class>
[+CCWA: <status>, <class>]
[+CCWA: ...]
OK
If error is related to ME functionality
+CME ERROR
Reference(s) PIN ASC0 ASC1 MUX1 MUX2 MUX3 Charge  Last
GSM 07.07, GSM 02.04, GSM 02.83,
GSM 03.83, GSM 04.83
% % % % % % ! ! !
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