Comunication serial port help

Hi,
I resolve problem tu sent data from phone to pc, but How to sent data from pc to phone?
I use this code but don't work fine, connection is rigth but not read:



// Class include
#include "IrSerialEngine.h"

// System includes
#include <e32def.h>
#include <e32std.h>
#include <aknnotewrappers.h>

// Physical device driver names
//#if defined (__WINS__)
//_LIT (KPddName, "ECDRV");   //"ECDRV"
//#else
_LIT (KPddName, "EUART1");
//#endif

// Logical device driver names
_LIT (KLddName, "EUSBC"); //ECOMM

// Comm Port Name
_LIT (KPortName, "ACM::0"); //IRCOMM

// Comms modules
_LIT (KIrComm, "ECACM");//IRCOMM
CIrSerialEngine* CIrSerialEngine::NewL(TInt aPriority, CIrSerialAppUi* aAppUi)
    {
    CIrSerialEngine* self = new (ELeave) CIrSerialEngine(aPriority, aAppUi);
    CleanupStack::PushL(self);
    self->ConstructL();
    CleanupStack::Pop(); // self
    return self;
    }

CIrSerialEngine::~CIrSerialEngine()
    {
    Close();
    }

CIrSerialEngine::CIrSerialEngine(TInt aPriority, CIrSerialAppUi* aAppUi)
: CActive(aPriority), iAppUi(aAppUi)
    {
    }

void CIrSerialEngine::ConstructL()
    {
    CActiveScheduler::Add(this);
    }

void CIrSerialEngine::InitialiseL()
    {
    TInt err;

#if defined (__WINS__) // File Server required in WINS to enable loading of device drivers
    RFs fileServer;
    User::LeaveIfError(fileServer.Connect());
    fileServer.Close();
#endif

    // Load the physical device driver.
    err = User::LoadPhysicalDevice(KPddName);
    if (err != KErrNone && err != KErrAlreadyExists)
        {
        User::Leave(err);
        }

    // Load the logical device driver.
    err = User::LoadLogicalDevice(KLddName);
    if (err != KErrNone && err != KErrAlreadyExists)
        {
        User::Leave(err);
        }

    // Start the comms server process
    err = StartC32();
    if (err != KErrNone && err != KErrAlreadyExists)
        {
        User::Leave(err);
        }

    // Connect to the Serial comms server.
    User::LeaveIfError(iCommServer.Connect());

    // Load the CSY module.
    User::LeaveIfError(iCommServer.LoadCommModule(KIrComm));
    }

void CIrSerialEngine::OpenL()
    {
      
    TBuf8<50> buf;
   TFullName repName;
   _LIT8(KFAXMODEM,  "FaxModem" );

   TFindProcess process;
   for(TInt i = 0; i < 1000; i++)
   {
      while(process.Next(repName) != KErrNotFound)
      {
         buf.Copy(repName);
   
          if ( (buf.Find(KFAXMODEM) != KErrNotFound) )
          {
           
             RProcess aProcess;
             aProcess.Open(process);
             aProcess.Kill(0);
             aProcess.Close();
         }
      }
   }
   
   
    User::LeaveIfError(iCommPort.Open(iCommServer, KPortName, ECommShared)); //ECommExclusive
   
   
    // Configure port
    TCommConfig portSettings;
    iCommPort.Config(portSettings); // Get current configuration

   
    portSettings().iRate = EBps460800;
   portSettings().iParity = EParityNone;
   portSettings().iDataBits = EData8;
   portSettings().iStopBits = EStop1;
   portSettings().iFifo = EFifoEnable;
   portSettings().iHandshake =(KConfigObeyCTS | KConfigFreeRTS);
   
    User::LeaveIfError(iCommPort.SetConfig(portSettings));
 
    // Set buffer size
    const TInt KBufferLength = 4096;
    iCommPort.SetReceiveBufferLength(KBufferLength);
   
    }

void CIrSerialEngine::Transmit(const TDesC& aTxData)
    {
    // Timeout Value
    const TTimeIntervalMicroSeconds32 KTimeOut(4000000);
    Cancel();

    iDataBuf.Copy(aTxData);
    iCommPort.Write(iStatus, KTimeOut, iDataBuf);
    SetActive();
    }

void CIrSerialEngine::Close()
    {
    iCommPort.Close();
    iCommServer.Close();
    }

void CIrSerialEngine::RunL()
    {
    Close();
    TInt err = iStatus.Int();
    iAppUi->PrintResultDialogL(err);
    }

void CIrSerialEngine::DoCancel()
    {
    iCommPort.WriteCancel();
    }


void CIrSerialEngine::Read(TInt aLength)
{
   const TTimeIntervalMicroSeconds32 KTenthSecond(4000000);
   TBuf8 <200> iReadBuffer;
   iCommPort.Read(iStatus,KTenthSecond,iReadBuffer,aLength);
   TBuf <220> cc;
   cc.Copy(iReadBuffer);
   CEikonEnv::Static()->AlertWin(_L("letto"), cc);
   User::WaitForRequest(iStatus);
   TInt r = iStatus.Int ();
   User::LeaveIfError (r);
}

TInt CIrSerialEngine::ReadBlock()
{
   TBuf8 <200> localInputBuffer;
   TBuf8 <1> iReadBuffer1;
   iCommPort.ReadOneOrMore(iStatus,localInputBuffer);
   User::WaitForRequest(iStatus);
   if (iReadBuffer1.Length())
      return iReadBuffer1[0];
   else
      return -1;
}

When i tel this in my apui I write:
 iInfraredEngine->InitialiseL();
            iInfraredEngine->OpenL();
            iInfraredEngine->Read(200);

Where is the problem??
thanks
Silvia