PROGRAM STORE ERROR DETECTION ARRANGEMENTS FOR SWITCHING SYSTEMS

摘要

A switching system includes a common control store having a plurality of circuit control registers which registers are arranged on a plurality of linked lists. Registers on different lists are linked together to control the operation of related circuits. Upon the detection of a linked register error, the detected register is removed from the lists and the codes contained therein are altered to ignore references thereto. The detected register is placed on an isolation list for a predetermined time during which time processing and store references to the detected register are deleted from the store. After the predetermined time the codes of the detected register are then altered to correspond to an idle state.