An improved system is provided for authentication of mail pieces bearing bar-coded indicia. Also, after compression of the pre-processed video sequence, the bit rate of the pre-processed and compressed video sequence will be lower than the bit rate of the video sequence after compression but without pre-processing. In addition, the atropisomers can be stable, i. The method is characterized in that the initialization of a new transmission queue is triggered by a data packet not having a proper connection identifier and having a destination identifier and after a successful initialization of a new transmission queue the data packet that triggered the initialization is placed to the new transmission queue.