code: public void sendRequest(ClientTransaction ct) throws TransactionDoesNotExistException, SipException {
  		final Request request = ct.getRequest();
  		ensureCorrectDialogLocalTag(request);
  		if (tracer.isInfoEnabled()) {
  			tracer.info(String.valueOf(ct)+" sending request:\n"+request);
  		}
  		wrappedDialog.sendRequest(((ClientTransactionWrapper)ct).getWrappedClientTransaction());		
  	}
docs: /*
  (non-Javadoc)
  @see javax.sip.Dialog#sendRequest(javax.sip.ClientTransaction)