| 摘要 |
A method and apparatus for monitoring system connection units in program controlled telecommunications exchange systems to determine which units are producing connection requirements is described. Incoming and outgoing connections are identified over input and output code transducers. A storage cell in the central memory is permanently assigned to each incoming connection, and this storage cell can be accessed on the basis of the identification process carried on in the input code transducer. An operating cycle is simultaneously requested, and the system connecting unit generating a requirement is interrogated. The address of the system connection unit producing a request is identified and placed in a first address store. The address of an immediately preceding request is placed in a second address store. The contents of the two stores are compared, and in case of lack of identity the address in the first store is transferred to the second store. If identity is determined, an indication thereof is forwarded to a store for continuous requirements, and this causes the production of a signal for blocking the inputs to the second address store. A second comparison process then takes place between the address in the second address store and the addresses which are assigned to the succeeding connection requests. In case of a determination of identity in this second comparison process the connection requirement is blocked from being forwarded to the transmission sequence control and an advancing signal arrives at the input code converter.
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