there is no working code about IMSI for 6600 WHY???

In the eric web sites this code doesnt work:
CTelephony telephony = CTelephony::NewL();
TRequestStatus status;
CTelephony::TSubscriberIdV1 subscriberId;
CTelephony::TSubscriberIdV1Pckg subscriberIdPckg(subscriberId);
telephony->GetSubscriberId(status, subscriberIdPckg));
User::WaitForRequest(status);
User::LeaveIfError(status);
TPtrC theIMSI(subscriberId.iSubscriberId);

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The i ve forund this code from http://db.cs.helsinki.fi/~mraento/lxr/source/context_log/src/locationing.cpp

 RMobilePhone phone;
082         RTelServer::TPhoneInfo info;
083         TInt ret;
084         if ( (ret=TelServer().GetPhoneInfo( 0, info ))==KErrNone) {
085                 if ((ret=phone.Open( TelServer(), info.iName ))==KErrNone) {
086                         CleanupClosePushL(phone);
087                         RMobilePhone::TMobilePhoneSubscriberId i;
088                         TRequestStatus r;
089                         phone.GetSubscriberId(r, i);
090                         User::WaitForRequest(r);
091                         if (r==KErrNone) {
092                                 imsi=i;
093                                 success=true;
094                         } else {
095                                 TBuf<80> msg=_L("error getting imsi ");
096                                 msg.AppendNum(r.Int());
097                                 msg.Append(_L(" ")); msg.Append(i);
098                                 if (cb) cb->status_change(msg);
099                         }


There are some virtual funtions and when i can use them in GUI app, there gives an error that about abstrac class, see decleration..(in container or APpui Class for ex..)
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Also i tried some codes from nokia forum which includes RAdvgsm class..
This class is for platform 1.0/ or 1.2 not used for 6600

So plz help me, i ve get rid of searching and getting errors...