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<!DOCTYPE task
  PUBLIC "-//OASIS//DTD DITA Task//EN" "task.dtd">
<task id="GUID-B66323BB-7AC0-5303-BC3A-DD577D28CF16" xml:lang="en"><title>Caller
Identification Status Tutorial</title><shortdesc>This tutorial describes how to get the caller identification status
information with the telephony API for applications. </shortdesc><prolog><metadata><keywords/></metadata></prolog><taskbody>
<context id="GUID-B45A8C02-1C5E-4902-8231-F98B1838CCE4"><p>The caller identification service is available only on GSM and
WCDMA networks.  </p><p/><p>The steps to get the caller identification
status information are:  </p></context>


<steps id="GUID-4E8D8774-7C57-5190-A896-E045B8028AE6">
<step id="GUID-76D5CC80-CC9D-59D1-BB44-CD9E689DBACA"><cmd/>
<info>create a new instance of <xref href="GUID-97D402C8-B4B7-385A-92B3-D3FCC0CA575A.dita"><apiname>CTelephony</apiname></xref>  </info>
</step>
<step id="GUID-FD81FA29-62DC-5519-8C71-456FD09EEC0B"><cmd/>
<info>call <xref href="GUID-97D402C8-B4B7-385A-92B3-D3FCC0CA575A.dita"><apiname>CTelephony::GetIdentityServiceStatus()</apiname></xref> to
get the caller identification service status information </info>
<info>Pass a <xref href="GUID-97D402C8-B4B7-385A-92B3-D3FCC0CA575A.dita"><apiname>TIdentityService</apiname></xref> object
with <xref href="GUID-97D402C8-B4B7-385A-92B3-D3FCC0CA575A.dita"><apiname>EIdServiceCallerPresentation</apiname></xref>  </info>
</step>
<step id="GUID-662113AC-889C-51E2-9053-294B8CEE35CB"><cmd/>
<info>pass a <xref href="GUID-97D402C8-B4B7-385A-92B3-D3FCC0CA575A.dita"><apiname>TIdentityService</apiname></xref> object
with <xref href="GUID-97D402C8-B4B7-385A-92B3-D3FCC0CA575A.dita"><apiname>EIdServiceCallerRestriction</apiname></xref> to
with hold the number </info>
</step>
<step id="GUID-16AA1108-AAC2-577F-A611-26224C493597"><cmd/>
<info>pass the enumeration<xref href="GUID-97D402C8-B4B7-385A-92B3-D3FCC0CA575A.dita"><apiname>EGetIdentityServiceStatusCancel</apiname></xref> to
the to cancel the asynchronous request. </info>
</step>
</steps>
<example id="GUID-1BDF5DCA-672D-56C5-9DB2-A777F6E9B68E"><title>Caller identification
status example</title> <p>Example code to get the caller identification status. </p> <codeblock id="GUID-5C67664C-8D4E-56FE-8745-F38072CE4B60" xml:space="preserve">#include &lt;e32base.h&gt;
#include &lt;Etel3rdParty.h&gt;

class CClientApp : public CActive
    { 

private:
    CTelephony* iTelephony;
    CTelephony::TIdentityServiceV1 iTIdentityServiceV1;
    CTelephony::TIdentityServiceV1Pckg iTIdentityServiceV1Pckg;

public:
    CClientApp(CTelephony* aTelephony);
    void SomeFunction();

private:
    /*
       These are the pure virtual methods from CActive that  
       MUST be implemented by all active objects
       */
    void RunL();
    void DoCancel();
   };

CClientApp::CClientApp(CTelephony* aTelephony)
    : CActive(EPriorityStandard),
      iTelephony(aTelephony),
      iTIdentityServiceV1Pckg(iTIdentityServiceV1)
    {
    //default constructor
    }

void CClientApp::SomeFunction()
    {
    CTelephony::TIdentityService condition = CTelephony::EIdServiceCallerPresentation;
    iTelephony-&gt;GetIdentityServiceStatus(iStatus, condition, iTIdentityServiceV1Pckg);
    SetActive();
    }

void CClientApp::RunL()
    {
    if(iStatus==KErrNone)
       {
       if( iTIdentityServiceV1.iIdentityStatus == CTelephony::EIdServiceActivePermanent )
          {} // CLIP is permanently active; 
             // Your phone will display the callers number whenever this is allowed by the caller
       }
    }

void CClientApp::DoCancel()
    {
    iTelephony-&gt;CancelAsync(CTelephony::EGetIdentityServiceStatusCancel);
    }</codeblock> </example>
</taskbody></task>