the major disadvantage rubee has over other protocols is speed and packet size. the rubee protocol is limited to 1,200 baud in existing applications. the ieee 1902.1 specifies 1,200 baud. the protocol could go to 9,600 baud with some loss of range. however, most visibility applications work well at 1,200 baud. packet size is limited tens to hundreds of bytes. rubee's design forgoes high bandwidth, high speed communication because most visibility applications do not require them.