Siemens MC55 AT manual AT+CCWA Call Waiting, At+Ccwa=?, At+Ccwa?, Scwa

9.7AT+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

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)

GSM 07.07, GSM 02.04, GSM 02.83, GSM 03.83, GSM 04.83

PIN ASC0 ASC1 MUX1 MUX2 MUX3 Charge  Last

% % % % % % ! ! !

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.

MC55_ATC_V04.00	Page 202 of 475	3/17/06
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