code: protected Dialog createNewTCAPDialog(SccpAddress origAddress, SccpAddress destAddress, Long localTrId) throws MAPException {
          try {
              return this.mapProviderImpl.getTCAPProvider().getNewDialog(origAddress, destAddress, localTrId);
          } catch (TCAPException e) {
              throw new MAPException(e.getMessage(), e);
          }
      }
docs: Creating new outgoing TCAP Dialog. Used when creating a new outgoing MAP Dialog
  
  @param origAddress
  @param destAddress
  @return
  @throws MAPException