Bridge circuit between two networks with user stations connected via bus has switch unit for direct connection between circuit units for bit connection layer while bypassing buffer memory

摘要

The circuit has a circuit unit (101,105) per bridge portal for the bit transmission layer, a circuit unit (102,106) per bridge portal for the connection layer and a switch unit (114) for a direct connection (113) between the two circuit units for the bit connection layer, either manually controled or automatically established while bypassing the buffer memory used for data packets in the other mode.