this SIM5218 AT command manual - Cooking Hacks

SIM5218 Serial AT Command Set
1...30 – when "no reply" is enabled or queried, this gives the time in seconds to wait before call
is forwarded, default value 20.
0 – not active
1 – active
Examples
AT+CCFC=
+CCFC: (0,1,2,3,4,5)
OK
AT+CCFC=0,2
+CCFC: 0,255
OK
9.10 AT+CCWA Call waiting
Description
The command allows control of the Call Waiting supplementary service. Activation, deactivation
and status query are supported. When querying the status of a network service (=2) the
response line for 'not active' case (=0) should be returned only if service is not active for
any . Parameter is used to disable/enable the presentation of an unsolicited result code
+CCWA: ,, to the TE when call waiting service is enabled. Command
should be abortable when network is interrogated.
SIM PIN References
YES 3GPP TS 27.007
Syntax
Test Command
AT+CCWA=
Read Command
AT+CCWA
Write Command
AT+CCWA=
[,[,]]
Responses
+CCWA: (list of supported s)
OK
Responses
+CCWA:
OK
Responses
When =2 and command successful:
+CCWA:,[
+CCWA: , [...]]
OK
ERROR
SIM5218_Serial _ATC_V1.36 159
5/15/2012