公开(公告)号：CA1159541A

公开(公告)日：1983-12-27

申请号：CA375162

申请日：1981-04-10

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： BELFORTE PIERO ,  BOSTICA BRUNO ,  PILATI LUCIANO

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

Abstract: A PCM switching element intended to be used in digital telephone exchanges for the making of switching or concentration stages of whatever capacity can be controlled by a commercially available microprocessor and can be made as an integrated circuit. Structures consisting of a plurality of such elements are readily designed owing to the use of a "busy" bit associated with each outgoing PCM channel.

公开(公告)号：DK115983A

公开(公告)日：1983-09-25

申请号：DK115983

申请日：1983-03-10

Applicant: CSELT CENTRO STUDI LAB TELECOM ,  ITALTEL SPA

Inventor： BELFORTE PIERO ,  BOSTICA BRUNO ,  BOVO AMILCARE ,  CANATO LUIGI ,  PILATI LUCIANO

IPC: H04Q3/52 ,  H04Q11/04 ,  H04Q

公开(公告)号：DE2801469A1

公开(公告)日：1978-07-20

申请号：DE2801469

申请日：1978-01-13

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： BELFORTE PIERO

IPC: H04L5/14 ,  H04B1/38 ,  H04B3/50

Abstract: Two stations of a telecommunication system, interconnected by a single two-way signal link, have respective signal transmitters each working into an impedance network with a first branch connected to the two-way link and a second branch forming a voltage divider. Each station also has a signal receiver energized through a comparator which recovers the incoming signal from a composite signal present at a junction point between the two-way link and the first network branch by subtracting a balancing signal, available at the voltage divider, from this composite signal. The comparator may comprise a differential amplifier or a digital subtractor.

公开(公告)号：DE2559058A1

公开(公告)日：1976-07-29

申请号：DE2559058

申请日：1975-12-30

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： BELFORTE PIERO ,  GUASCHINO GIANCARLO ,  PERUCCA GIOVANNI

IPC: H04Q11/04

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.

公开(公告)号：CA2250703C

公开(公告)日：2002-07-09

申请号：CA2250703

申请日：1997-04-01

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： MAGGIONI FLAVIO ,  BELFORTE PIERO

IPC: G01R1/06 ,  G01R31/28 ,  H04M3/26 ,  H04B17/00 ,  G01R31/3181

Abstract: A constructive module (1) of an electronic telecommunications equipment is associated with means (4, 5, 6, 7, 8, 9) interfacing it with a testing and diagnosing system. Said means can be connected at least temporarily and in n on- invasive fashion and comprise: actuation probes (4), driven by control signa ls provided by the testing and diagnosing system, for the automatic and programmed insertion of test signals into predetermined points of the module , and monitoring probes (5) for taking from the monitoring points and transferring to the testing and diagnosing system signals present in the module. The probes (4, 5) are connected with the testing and diagnosing syst em by means of shielded micro-coaxial cables (7, 9). Conditioning devices (17), associated with the cables (7) connected to the actuation probes (4), provid e a galvanic isolation between the testing and diagnosing system and the modul es (1) under test.

公开(公告)号：DE69707108D1

公开(公告)日：2001-11-08

申请号：DE69707108

申请日：1997-03-05

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： BELFORTE PIERO ,  MAGGIONI FLAVIO

IPC: G01R31/00 ,  G01R31/28

Abstract: A probe for fault-actuation devices has a transistor which is utilized to insert a reference signal into a fault-insertion point. The emitter and collector are connectable to the fault-insertion point and a reference signal and a capacitor with a capacitance greater than the capacitance of parasitic components is connected between the base and the emitter.

公开(公告)号：IT1303106B1

公开(公告)日：2000-10-30

申请号：ITTO980676

申请日：1998-08-03

Applicant: CSELT CENTRO STUDI LAB TELECOM ,  HDT ITALIA S R L

Inventor： CALCAGNO PIERO ,  BELFORTE PIERO

IPC: G01R31/28

公开(公告)号：AU708184B2

公开(公告)日：1999-07-29

申请号：AU2024097

申请日：1997-03-05

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： BELFORTE PIERO ,  MAGGIONI FLAVIO

IPC: G01R31/00 ,  G01R31/28

Abstract: A probe for fault-actuation devices has a transistor which is utilized to insert a reference signal into a fault-insertion point. The emitter and collector are connectable to the fault-insertion point and a reference signal and a capacitor with a capacitance greater than the capacitance of parasitic components is connected between the base and the emitter.

公开(公告)号：NO983884A

公开(公告)日：1998-08-24

申请号：NO983884

申请日：1998-08-24

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： BELFORTE PIERO ,  MAGGIONI FLAVIO

IPC: G01R31/00 ,  G01R31/28

CPC classification number: G01R31/2841

公开(公告)号：ITTO960256A1

公开(公告)日：1997-10-02

申请号：ITTO960256

申请日：1996-04-02

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： BELFORTE PIERO ,  MAGGIONI FLAVIO

IPC: G01R1/06 ,  G01R31/28 ,  H04M3/26

Abstract: An electronic telecommunications module has circuit components and conductors forming a telecommunications circuit having insertion points at which signals can be applied for test purposes and monitoring points from which responses can be tapped. The insertion and monitoring probes are mounted on the module and are connected to the respective points by shielded microcoaxial cables and the probes are connected by shield and microcoaxial cables on the connectors to allow interfacing between the particular module and the testing and diagnostic system.