Arrangement for fault diagnosis in the communication controller of a program controlled data switching system

摘要: Apparatus is described for monitoring and diagnosing faults in the communication controller of a line termination unit program controlled data switching system. Individual devices detect emit fault signals using safeguarding programs diagnosis. The controllers each contain collection device which receives individual forms word therefrom describes fault. Further, reaction are formed. A diagnosis routine evaluates command read out from zone central storage unit. contains first decoding circuit operations portion forming control therefrom. cause channels to be switched through between output register input register, as well containing an intermediate buffer store. second activated by additional signal producing series evaluating command. circuits registers connectable under transfer