Circuit arrangement for telecommunication exchanges, particularly telephone exchanges, comprising scanning joints which are cyclically controlled by information interrogation devices

摘要

A polling device which cyclically retrieves information from different polling stations controls the different polling stations different times, for which purpose addresses of the polling stations are stored different times in a query control memory. If a query facility did not provide any information when querying a query point, it will be skipped the next time. For this purpose, whenever no information has been received when a query point is activated with its address, the memory location where the same address is again stored is first searched in the memory, and a flag bit is stored there. Then the memory location immediately following the previously activated memory location is sought and the next query location in question is activated with the address read here. Merkbit causes the interrogation point that can be queried with the relevant address is not queried once; Merkbit is deleted.