Chapter 3: AT Commands Reference
June 30, 2008 AT Commands Reference Manual 3 -23
+CCWA, Call Waiting Command
This command controls the Call Waiting supplementary service, including the settings and the
queries of the G24 and the network. When the Call Waiting indication is enabled by the G24 and
there is a waiting call, a +CCWA: indication is sent from the G24 to the terminal.
Note: The G24 supports only one of the services at a time: Voice, Data or Fax. Multiparty is a
voice-only functionality.
A CCWA indication is sent to the terminal only during a voice call-waiting event. A
CCWA indication is not sent for a fax/data call during in a voice session.
+CCWA Indication
When a call-waiting indication is enabled by the G24 (<n>=1), the following unsolicited
indication is sent to the terminal from the G24:
+CCWA:<number>,<type>,<class>,[<alpha>][,<CLI validity>]
Action Syntax Response Remarks
Set +CCWA=[<n>[,
<mode>[,<class>]]] OK
If <mode>=2 and the
command succeeds:
+CCWA:
<status>,<class1>
[<CR><LF>+CCWA:
<status>,<class2>
[...]]
OK
The Set command enables/disables the
Call-Waiting indication in the G24 and in
the network. Activation, deactivation and
status query are supported.
Note:
When the <mode> parameter is set
to 2 (network query), the <n>
parameter is ignored. This means
that no enable/disable action is
performed while querying the
network.
Read +CCWA? +CCWA: <n>
OK
The Read command returns the
enable/disable status of the call waiting
indication in the G24 (<n>).
Test +CCWA=? +CCWA: (list of
supported <n>s) The Test command returns <n> values
supported by the G24 as a compound
value.