private void sendRequestPendingResponse(SIPRequest sipRequest,
SIPServerTransaction transaction) {
if (transaction.getState() != TransactionState.TERMINATED) {
SIPResponse sipResponse = sipRequest
.createResponse(Response.REQUEST_PENDING);
ServerHeader serverHeader = MessageFactoryImpl
.getDefaultServerHeader();
if (serverHeader != null) {
sipResponse.setHeader(serverHeader);
}
try {