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<task xml:lang="en" id="GUID-D05A52D7-2C95-5B6D-869A-46C00BD36024"><title>Data Call Capability Tutorial</title><shortdesc>This tutorial describes how to get the capabilities of a data call. </shortdesc><prolog><metadata><keywords/></metadata></prolog><taskbody> <steps id="GUID-30F25F56-A4C3-543C-AA64-66C76CA020DC"> <step id="GUID-55C2612B-1654-509B-A9DE-388C73F5697B"><cmd>Use <xref href="GUID-AA81AFA4-6FAC-3B0D-A082-BE0AEC58CCA8.dita"><apiname>RMobileCall::GetMobileDataCallCaps()</apiname></xref> to get the capability of the data call. </cmd> <info>Capabilities are encapsulated in a <xref href="GUID-AA81AFA4-6FAC-3B0D-A082-BE0AEC58CCA8.dita"><apiname>RMobileCall::TMobileCallDataCapsV1</apiname></xref> object </info> </step> <step id="GUID-981EDC09-10BA-5D67-ADBF-3FA386098771"><cmd>Use <xref href="GUID-AA81AFA4-6FAC-3B0D-A082-BE0AEC58CCA8.dita"><apiname>RMobileCall::NotifyMobileDataCallCapsChange()</apiname></xref> to get the notification of any changes in the capabilities. </cmd> </step> <step id="GUID-AAE944B1-AF2D-5379-905B-FD5A9F5E49A5"><cmd>Use <xref href="GUID-AA81AFA4-6FAC-3B0D-A082-BE0AEC58CCA8.dita"><apiname>RMobileCall::GetMobileDataCallRLPRange()</apiname></xref> to get the Radio Link Protocol (RLP) parameter ranges. </cmd> <info>Retrieve the values of minimum and maximum retransmission attempts with this function. </info> </step> </steps> <example><title>Data call capability example</title> <p>The following code tests if the call supports a data rate of at least 9600 baud. </p> <codeblock id="GUID-A31479E4-42A8-5E17-A1AC-F8B520B21B3B" xml:space="preserve">TBool CClientApp::DataCallCapsL(RMobileCall&amp; aCall)

    {

    RMobileCall::TMobileCallDataCapsV1 callCaps;

    RMobileCall::TMobileCallDataCapsV1Pckg callCapsPckg(callCaps);

    User::LeaveIfError(aCall.GetMobileDataCallCaps(callCapsPckg));

    if (callCaps.iSpeedCaps >= RMobileCall::KCapsSpeed9600)

        {

         return ETrue;

        }

    else

        {

         return EFalse;

        }

    }</codeblock> </example> </taskbody></task>