公开(公告)号：DE2403651A1

公开(公告)日：1974-09-19

申请号：DE2403651

申请日：1974-01-25

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： VINCENTIIS GIROLAMO DE ,  DOGLIOTTI RENATO ,  LUVISON ANGELO

IPC: H04L25/48 ,  H04L25/49 ,  H03K13/24

公开(公告)号：DE2626838A1

公开(公告)日：1976-12-23

申请号：DE2626838

申请日：1976-06-15

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： VINCENTIIS GIROLAMO DE ,  MELINDO FLAVIO ,  PERUCCA GIOVANNI

IPC: G06F11/16 ,  G06F11/20 ,  H04Q3/545 ,  G06F11/00 ,  G06F3/04 ,  G06F15/16 ,  H04Q1/20 ,  H04Q3/54

Abstract: Two processors UP1 and UP2, designed to test the operation of a pair of switching networks IN1 and IN2 in a telecommunication system through respective sets of peripheral interface units P11 etc. and P21 etc., are interconnected for parallel operation and are each linked with both sets of peripheral units via branched output and input multiples carrying outgoing and incoming messages. Each set of peripheral units is served by a respective bus bar BUS1, BUS2 connectable at one end, via an outgoing multiplexer MX12, MX22, to one of the branches of either output multiple 2, 3 and at the other end, via an incoming multiplexer MX11, MX21, to one of the branches of either input multiple 12, 13. The outgoing messages are also delivered, in parallel, to a pair of decision networks LS1, LS2 controlling the associated multiplexers MX12, MX22 in response to switching criteria obtained from a pair of intercommunicating synchronization circuits SN1, SN2 which are inserted in the two outgoing multiples upstream of their branching points. The sending of incoming messages from the peripheral units to the processors is preceded by access requests temporarily stored in parallel, under the control of a timing circuit BT, in a pair of buffer registers MT1 and MT2 respectively assigned to processors UP1 and UP2.

公开(公告)号：DE2538955A1

公开(公告)日：1976-03-25

申请号：DE2538955

申请日：1975-09-02

Applicant: CSELT CENTRO STUDI LAB TELECOM

Inventor： CALCAGNO PIERO ,  VINCENTIIS GIROLAMO DE

IPC: H04M3/56

Abstract: Signals are processed and applied to the conference circuit, so that they are simultaneously transmitted to all parties. To select speech signals to be sent in amultiplex frame to the parties to the conference, loudest speech signals exceeding a certain level are chosen, and if not signal in the present frame exceeds this threshold, then signals from a party selected in the preceding frame are sent to the other parties to the conference. A statistical survey method may also be used to asses the strength of th signals.