A removal apparatus for the removal of containers from a stream of containers moved in groups or lanes of a container treatment plant. This is accomplished by eliminating unknown term fc in differential phase estimation, introducing a symbol rate tracking mechanism, applying hysteresis nonlinearity to eliminate phase shaping effect and using weighted average to estimate phase difference. A failure information generation part generates failure information, which in turn is finally stored in the hard disk of the information storage servers as a failure information database. Each of the joining portions is in contact through a lateral face with an internal face of a substantially flat wall perpendicular to the reference plane of the frame, so that the end uprights of the frame are in abutment on the joining portions. If so, the packet is passed to a transport packet buffer for further processing.