Data Sheet

Smart Machine Smart Decision
Time
Reference Note
3GPP TS 27.007
3.2.6 AT+CCWA Call Waiting Control
AT+CCWA Call Waiting Control
Response
+CCWA: (list of supported <n>s)
OK
Test Command
AT+CCWA=?
Parameters
See Write Command
Response
+CCWA: <n>
OK
Read Command
AT+CCWA?
Parameters
See Write Command
Response
TA controls the Call Waiting supplementary service. Activation,
deactivation and status query are supported.
If <mode>≠2 and Command successful
OK
If <mode>=2 and Command successful
+CCWA:<status>,<class1>[<CR><LF>+CCWA:<status>,<class2>[...]]
OK
ERROR
If error is related to ME functionality:
+CME ERROR: <err>
Note: <status>=0 should be returned only if service is not active for any
<class> i.e. +CCWA: 0, 7 will be returned in this case.
When mode=2, all active call waiting classes will be reported. In this mode
the Command is aborted by pressing any key.
Write Command
AT+CCWA=<n>[,
<mode>[,<class>]]
Parameters
<n> 0 Disable presentation of an unsolicited result code
1 Enable presentation of an unsolicited result code
<mode> When <mode> parameter not given, network is not
interrogated
0 Disable
1 Enable
2 Query status
SIM800 Series_AT Command Manual_V1.05 62 2014-07-31