Incoming call number OS 9.1

HI!

all senior member i am trying to get an incoming call number in symbian os9.1 for 3250. i write some code below all works perfectly but when an incoming call is there on the phone it goes to Telephony::ERemoteIdentityUnknown.
i don't know whats the resaon behind this.

Please help me it is urgent.


CPhoneCapsListener* CPhoneCapsListener :: NewL()
{
   CPhoneCapsListener *self = new(ELeave)CPhoneCapsListener;
   CleanupStack::PushL(self);
   self->ConstructL();
   CleanupStack::Pop();
   return self;   
}



CPhoneCapsListener :: CPhoneCapsListener():CActive(CActive::EPriorityStandard),
iCallStatusV1Pckg(iCallStatusV1), iCallInfoV1Pckg(iCallInfoV1), iCallSelectionV1Pckg(iCallSelectionV1), iRemotePartyInfoV1Pckg(iRemotePartyInfoV1)
{
}


void CPhoneCapsListener :: ConstructL()
{
   iTelephony = CTelephony::NewL();
   CActiveScheduler::Add(this);
}


CPhoneCapsListener :: ~CPhoneCapsListener()
{
   Cancel(); // Cancel any request, if outstanding
   delete iTelephony;
}

void CPhoneCapsListener :: DoCancel()
{
   iTelephony->CancelAsync(CTelephony::EVoiceLineStatusChangeCancel);   
}

void CPhoneCapsListener :: ListenL()
{
   Cancel(); // Cancel any request, just to be sure
   iTelephony->NotifyChange(iStatus, CTelephony::EVoiceLineStatusChange, iCallStatusV1Pckg);   
   SetActive();
}
             

void CPhoneCapsListener :: RunL()
{
if(iStatus == KErrNone)
   {
   CAknInformationNote* note = new (ELeave) CAknInformationNote;
   note->ExecuteLD(_L("hello"));
   User::After(1000000);
   GetNumberL();
   }
else if(iStatus == KRequestPending)
   {
   CAknInformationNote* note = new (ELeave) CAknInformationNote;
   note->ExecuteLD(_L(" "));
   SetActive();
   }
}

void CPhoneCapsListener :: GetNumberL()
{
      iCallSelectionV1.iLine = CTelephony::EVoiceLine;
      iCallSelectionV1.iSelect = CTelephony::EInProgressCall;
      
      iTelephony->GetCallInfo( iCallStatusV1Pckg, iCallInfoV1Pckg, iRemotePartyInfoV1Pckg );

      if(iRemotePartyInfoV1.iRemoteIdStatus == CTelephony::ERemoteIdentityAvailable)
      {
         iNumber = iRemotePartyInfoV1.iRemoteNumber.iTelNumber;
      }
      else if(iRemotePartyInfoV1.iRemoteIdStatus == CTelephony::ERemoteIdentityUnknown)
      {
                  //**it always come here
      }
      else if(iRemotePartyInfoV1.iRemoteIdStatus == CTelephony::ERemoteIdentitySuppressed)
      {
      }

}


Thanks and Regards
Jitendra Kumar