code: @Override
  	public SIPDialog createDialog(SIPClientTransaction transaction, SIPResponse sipResponse) {
  		if (sipCache.inLocalMode()) {
  			return super.createDialog(transaction,sipResponse);
  		}
  		else {
  			final String dialogId = ((SIPRequest) transaction.getRequest()).getDialogId(false);
  			SIPDialog retval = this.earlyDialogTable.get(dialogId);
  			if (retval != null && sipResponse.isFinalResponse()) {
  				this.earlyDialogTable.remove(dialogId);
  			} else {
  				retval = (SIPDialog) HASipDialogFactory.createHASipDialog(replicationStrategy, transaction, sipResponse);
  			}
  			return retval;
  		}
      }
docs: /*
  (non-Javadoc)
  @see gov.nist.javax.sip.stack.SIPTransactionStack#createDialog(gov.nist.javax.sip.stack.SIPClientTransaction, gov.nist.javax.sip.message.SIPResponse)