void dumpBinary(DataOutputStream os) throws IOException {
  os.writeInt(type);
  os.writeInt(phone);
  os.writeInt(start);
  os.writeInt(end);
  os.writeInt(prev);
  os.writeInt(next);
}

void dumpBinary ( DataOutputStream os ) throws IOException { os . writeInt ( type ) ; os . writeInt ( phone ) ; os . writeInt ( start ) ; os . writeInt ( end ) ; os . writeInt ( prev ) ; os . writeInt ( next ) ; }
dumps this unit to the given output stream .
