Specifications

3GPPTS27.007ATCOMMANDS
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65 HSPA+ATCommandsReferenceGuide
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CallWaiting+CCWA
Setcommandallowsthecontrolofthecallwaitingsupplementaryservice.Activation, deactivation,andstatus
queryaresupported.
Readcommandreportsthecurrentvalueoftheparameter<n>.
Testcommandreportsthesupportedvaluesfortheparameter<n>.
Syntax
Command Commandtype
AT+CCWA=[<n>[,<cmd>[,<class>]]] Set
AT+CCWA? Read
AT+CCWA=? Test
ParametersandValues
<char> 
<n> Enablesordisablesthepresentationofanunsolicitedresultcode.
0 Disable.
1 Enable.
<cmd> Enablesordisablesorqueriestheserviceatnetworklevel.
0 Disable.
1 Enable.
2 Querystatus.
<class>
Asumofintegerseachrepresentingaclassofinformationtowhichthecommand
refers.
1 Voice(telepho
ny).
2 Data.
4 Fax(facsimileservices).
7 Voice+data+fax.Default:7.
8 Shortmessageservice.
16 Datacircuitsync.
32 Datacircuitasync.
64 Dedicatedpacketaccess.
128 DedicatedPADaccess.
Notes
 Reference:3GPPTS27.007
CallHoldingServic es+CHLD
Executecommandcontrolsthenetworkcallholdservice.Thiscommandisusedtomanagecall holdand
multipartyconversation(conferencecall).Calls canbeputonhold,recovered,releasedoraddedtoa
conversation.
Testcommandreturnsthelistofsupported<n>s.
+CHLD:(0,1,1X,2,2X,3,4)