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    5.
    发明专利
    未知

    公开(公告)号：IT1027384B

    公开(公告)日：1978-11-20

    申请号：IT6718775

    申请日：1975-01-28

    Applicant: CSELT CENTRO STUDI LAB TELECOM

    Inventor： PERUCCA GIOVANNI ,  GIANCARLO GUASCHINO ,  BELFORTE P

    IPC: H04Q11/04 ,  H04N

    Abstract: A processor in a telephone exchange, monitoring the activity of r subscriber lines having each an incoming and an outgoing channel allocated to them, emits during respective halves of any 8-bit time slot in a 32-time-slot frame a pair of m-bit addresses x, y for each subscriber initiating or engaged in a conversation, these addresses respectively identifying an outgoing channel of a first (e.g. calling) subscriber and an incoming channel of a second (e.g. called) subscriber to be placed once per frame in communication with each other by a PCM switching network. The addresses of incoming and outgoing channels issuing from the processor during each time slot are separated in a distributor, the addresses y being inscribed in stages of a storage network respectively assigned to the 32.32.n channels identified by addresses x. The storage network consists of n random-access memories, one for each of n channel groups, divided into 32 sections of 32 stages each for as many 32-channel families. Each of 32 scanning intervals composed of n phases, occurring within a time slot, is reserved for the successive readout of homothetic stages in a respective set of n corresponding sections of all the memories, the set being divided into two subsets respectively scanned in the presence of relatively staggered enabling pulses also spanning n phases each whereby the readout of each subset starts after the beginning and terminates before the end of the corresponding enabling pulse.

    7.
    发明专利
    未知

    公开(公告)号：DK13482A

    公开(公告)日：1982-07-16

    申请号：DK13482

    申请日：1982-01-14

    Applicant: CSELT CENTRO STUDI LAB TELECOM

    Inventor： BELFORTE P ,  BONDONNO M ,  GARETTI E ,  GUASCHINO G ,  PILATI L

    IPC: H04Q3/545 ,  H04Q11/04 ,  H04Q

    Abstract: Interconnection unit equipped with a microprocessor- controlled unit and auxiliary circuits specialized in diagnostic, allowing the functions of diagnostic, trouble localization and reconfiguration to be carried out by the single building blocks, without requiring the generation of artificial test traffic.

    8.
    发明专利
    未知

    公开(公告)号：DK208681A

    公开(公告)日：1981-11-14

    申请号：DK208681

    申请日：1981-05-12

    Applicant: CSELT CENTRO STUDI LAB TELECOM

    Inventor： BELFORTE P ,  BOSTICA B ,  PILATI L

    IPC: H04Q3/52 ,  H04Q11/04 ,  H04Q11/08 ,  H04Q

    Abstract: The present PCM switching element is intended to be used in digital telephone exchanges for the making of switching or concentration stages of whatever capacity. … In fact, structures consisting of a plurality of such elements are easily performed thanks to use of a bit associated with each outgoing PCM channel, called "busy bit". … The switching element can be controlled by a commercially available microprocessor and can be made as an integrated circuit.

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