A binary selector stage and a selector and selector system comprising such selector stages

摘要

Contemporary communication networks, telephony exchanges in particular, are frequently provided with a central control. A consequence there of is that they are very complex. The invention provides a communication network having a high degree of distributed control and processing by providing a binary selector stage with which selectors and selector systems are assembled which are employed in the entire network. The selector stage comprises an identification circuit (10) for identifying destination addresses applied to input (12) and which are considered to be associated with the service area of the selector stage. An indicator circuit (11) determines in a list-of-free-outputs (32) to which free output the destination address, which is identified by (10) and transferred to a first output (16), must be conveyed.Non-identified destination addresses are transferred to a second output (14), to which output a further selector stage can be connected.