SU1579470A3 - Цифрова система св зи - Google Patents

Цифрова система св зи Download PDF

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Publication number
SU1579470A3
SU1579470A3 SU792739501A SU2739501A SU1579470A3 SU 1579470 A3 SU1579470 A3 SU 1579470A3 SU 792739501 A SU792739501 A SU 792739501A SU 2739501 A SU2739501 A SU 2739501A SU 1579470 A3 SU1579470 A3 SU 1579470A3
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SU
USSR - Soviet Union
Prior art keywords
group
block
processors
output
lines
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SU792739501A
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English (en)
Inventor
Джеймс Лоренс Алан
Майкл Коттон Джон
Джеймс Хамер-Ходжес Кеннет
Нейл Дененберг Джеффри
Original Assignee
Алкатель Н.В. (Инопредприятие)
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Application filed by Алкатель Н.В. (Инопредприятие) filed Critical Алкатель Н.В. (Инопредприятие)
Application granted granted Critical
Publication of SU1579470A3 publication Critical patent/SU1579470A3/ru

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04QSELECTING
    • H04Q11/00Selecting arrangements for multiplex systems
    • H04Q11/04Selecting arrangements for multiplex systems for time-division multiplexing
    • H04Q11/0407Selecting arrangements for multiplex systems for time-division multiplexing using a stored programme control

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Multi Processors (AREA)
  • Computer And Data Communications (AREA)

Abstract

Изобретение относитс  к технике св зи. Цель изобретени  - снижение вли ни  взаимных помех. Цифрова  система св зи содержит N терминальных селективных блоков (ТСБ) 1, каждый из которых состоит из первой и второй групп процессоров 4 и 5 и коммутационного блока доступа (КБД) 6, а также коммутатор 2, выполненный в виде группы переключателей 3. Работа данной системы св зи,  вл ющейс  синхронной по скорости и асинхронной по фазе, осуществл етс  в коммутаторе 2 и в КБД 6 посредством множества многопортных коммутационных элементов. Порты таких элементов действуют и как входы, и как выходы в зависимости от применени  одностороннего, двустороннего и многостороннего коммутатора в сети. В коммутаторе 2 каждый порт содержит собственную логику управлени  приемом и передачей. 3 ил.

Description

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Claims (1)

  1. Формула изобретения
    Цифровая система связи, содержащая N терминальных селективных блоков, соединенных между собой посредством коммутатора, выполненного в виде группы переключателей, о т л и ч а ю щ ая с я тем, что, с целью снижения влияния взаимных помех, терминальные селективные блоки выполнены в виде первой группы процессоров, соединенных с 'второй группой процессоров по мультиплексной шине через коммутационный блок доступа, состоящий из последовательно соединенных входного блока син13 хронизации, буферного регистра и бло ка управления приемом, выходы управ ления которого соединены соответственно с входами блока памяти управления приемом, блока канальной памяти и блока поиска отказа от приема, соединенного через формирователь сигнала отказа с выходным регистром, выход которого соединен с линией передачи, выход буферного регистра через блок ‘ отказа от приема соединен с входом блока управления передачей, соединен- ного с блоком памяти управления передачи, выходы блока управления - прие мом соединены с мультиплексной шиной непосредственно и через блок памяти канала, выход блока синхронизации передачи соединен с мультиплексной шиной, выход которой через блок выбора свободного канала соединен с входом считывания блока памяти каналов, последовательно соединенные декодер, * блок памяти и выходной регистр, при
    I этом декодер, блок памяти данных, , блок поиска свободного канала и блок канальной памяти соединены с мультиплексной шиной.
SU792739501A 1978-03-17 1979-03-16 Цифрова система св зи SU1579470A3 (ru)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/888,251 US4201889A (en) 1978-03-17 1978-03-17 Distributed control digital switching system

Publications (1)

Publication Number Publication Date
SU1579470A3 true SU1579470A3 (ru) 1990-07-15

Family

ID=25392851

Family Applications (1)

Application Number Title Priority Date Filing Date
SU792739501A SU1579470A3 (ru) 1978-03-17 1979-03-16 Цифрова система св зи

Country Status (31)

Country Link
US (1) US4201889A (ru)
JP (1) JPS54129906A (ru)
AR (1) AR225281A1 (ru)
AU (1) AU521525B2 (ru)
BR (1) BR7901670A (ru)
CA (1) CA1132234A (ru)
CS (1) CS271302B2 (ru)
DK (1) DK156357C (ru)
EG (1) EG13819A (ru)
ES (1) ES478733A1 (ru)
FI (1) FI74574C (ru)
FR (1) FR2420262B1 (ru)
GB (3) GB2016867B (ru)
GR (1) GR66849B (ru)
HK (3) HK19584A (ru)
HU (1) HU180797B (ru)
IN (1) IN152065B (ru)
IT (1) IT1193180B (ru)
MX (1) MX145443A (ru)
NL (1) NL190828C (ru)
NO (1) NO154290C (ru)
NZ (1) NZ189849A (ru)
PL (1) PL135976B1 (ru)
PT (1) PT69346A (ru)
RO (1) RO80673A (ru)
SE (2) SE440578B (ru)
SG (3) SG68383G (ru)
SU (1) SU1579470A3 (ru)
TR (1) TR20670A (ru)
YU (1) YU41855B (ru)
ZA (1) ZA79942B (ru)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6208660B1 (en) 1994-05-05 2001-03-27 Sprint Communications Company, L.P. Method, system and apparatus for telecommunications control

Families Citing this family (81)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4201890A (en) * 1978-03-17 1980-05-06 International Telephone And Telegraph Multiport digital switching element
FR2451141A1 (fr) * 1979-03-08 1980-10-03 Cit Alcatel Autocommutateur a reseau de connexion numerique
JPS5616355A (en) * 1979-07-20 1981-02-17 Kokusai Denshin Denwa Co Ltd <Kdd> Dispersion-type switchboard
US4291196A (en) * 1979-11-06 1981-09-22 Frederick Electronics Corp. Circuit for handling conversation data in a distributed processing telex exchange
US4296492A (en) * 1979-12-26 1981-10-20 Bell Telephone Laboratories, Incorporated Continuity verification arrangement
US4280217A (en) * 1979-12-26 1981-07-21 Bell Telephone Laboratories, Incorporated Time division switching system control arrangement
US4322843A (en) * 1979-12-26 1982-03-30 Bell Telephone Laboratories, Incorporated Control information communication arrangement for a time division switching system
GB2083319B (en) 1980-06-25 1984-03-28 Plessey Co Ltd Digital switching module
FR2503513A1 (fr) * 1981-04-03 1982-10-08 Cit Alcatel Autocommutateur temporel a commande repartie
US4456987A (en) * 1982-03-22 1984-06-26 International Telephone And Telegraph Corporation Digital switching network
DE3311900A1 (de) * 1983-03-31 1984-10-04 Siemens AG, 1000 Berlin und 8000 München Schaltungsanordnung fuer fernmeldeanlagen, insbesondere fernsprechvermittlungsanlagen mit informationsverarbeitenden schaltwerken und einrichtungen zur abwehr von ueberbelastungen
US4905219A (en) * 1983-09-22 1990-02-27 Aetna Life Insurance Company Three level distributed control for networking I/O devices
US4524440A (en) * 1983-12-06 1985-06-18 At&T Bell Laboratories Fast circuit switching system
USRE32900E (en) * 1983-12-06 1989-04-04 American Telephone And Telegraph Company, At&T Bell Laboratories Fast circuit switching system
US4521880A (en) * 1983-12-06 1985-06-04 At&T Bell Laboratories Time-slot interchanger for fast circuit switching
US4608684A (en) * 1984-03-26 1986-08-26 Itt Corporation Digital switching systems employing multi-channel frame association apparatus
US4698803A (en) * 1985-08-02 1987-10-06 Gte Laboratories Incorporated Burst-switching communications system
US4698799A (en) * 1985-08-02 1987-10-06 Gte Laboratories Incorporated Link switch for a burst-switching communications system
US4707825A (en) * 1985-08-02 1987-11-17 Gte Laboratories Incorporated Methods of installing and assigning control processors in a distributed-control communications system
US4710916A (en) * 1985-08-02 1987-12-01 Gte Laboratories Incorporated Switching apparatus for burst-switching communications system
US4646294A (en) * 1985-08-02 1987-02-24 Gte Laboratories Incorporated High-speed queue sequencer for a burst-switching communications system
US4698841A (en) * 1985-08-02 1987-10-06 Gte Laboratories, Incorporated Methods of establishing and terminating connections in a distributed-control burst switching communications system
US4644529A (en) * 1985-08-02 1987-02-17 Gte Laboratories Incorporated High-speed switching processor for a burst-switching communications system
US4703478A (en) * 1985-08-02 1987-10-27 Gte Laboratories Incorporated Burst-switching method for an integrated communications system
DE3533524A1 (de) * 1985-09-20 1987-04-02 Standard Elektrik Lorenz Ag Verfahren zum vermitteln des nachrichteninhalts von datenpakete enthaltenden kanaelen in einer vermittlungsstelle und vermittlungsstelle zum durchfuehren eines solchen verfahrens
SU1547671A1 (ru) * 1988-07-20 1991-09-07 Предприятие П/Я Р-6609 Цифрова коммутационна система
US5179669A (en) * 1988-08-22 1993-01-12 At&T Bell Laboratories Multiprocessor interconnection and access arbitration arrangement
US5742761A (en) * 1991-03-29 1998-04-21 International Business Machines Corporation Apparatus for adapting message protocols for a switch network and a bus
US5495474A (en) * 1991-03-29 1996-02-27 International Business Machines Corp. Switch-based microchannel planar apparatus
US5321813A (en) * 1991-05-01 1994-06-14 Teradata Corporation Reconfigurable, fault tolerant, multistage interconnect network and protocol
US5237571A (en) * 1991-09-26 1993-08-17 Ipc Information Systems, Inc. Broadcast system for distributed switching network
US5623489A (en) * 1991-09-26 1997-04-22 Ipc Information Systems, Inc. Channel allocation system for distributed digital switching network
US5214691A (en) * 1991-09-26 1993-05-25 Ipc Information Systems, Inc. Key telephone system with virtual private lines
US5577075A (en) * 1991-09-26 1996-11-19 Ipc Information Systems, Inc. Distributed clocking system
US5379280A (en) * 1991-09-26 1995-01-03 Ipc Information Systems, Inc. Conferencing system for distributed switching network
US5255264A (en) * 1991-09-26 1993-10-19 Ipc Information Systems, Inc. Distributed control switching network for multi-line telephone communications
SE508876C2 (sv) * 1992-06-24 1998-11-09 Ericsson Telefon Ab L M Digital väljare avsedd att användas i en nod i ett kretskopplat telekommunikationsnät med distribuerad väljarfunktion
DE4221188C2 (de) * 1992-06-27 1997-09-11 Sel Alcatel Ag Vermittlungsstelle
US6263374B1 (en) 1992-09-17 2001-07-17 International Business Machines Corporation Apparatus for coupling a bus-based architecture to a switch network
US5568543A (en) * 1993-07-19 1996-10-22 Telefonaktiebolaget Lm Ericsson Stored program controlled digital public exchange
US6172977B1 (en) * 1994-05-05 2001-01-09 Sprint Communications Company, L. P. ATM direct access line system
US6314103B1 (en) 1994-05-05 2001-11-06 Sprint Communications Company, L.P. System and method for allocating bandwidth for a call
US5926482A (en) 1994-05-05 1999-07-20 Sprint Communications Co. L.P. Telecommunications apparatus, system, and method with an enhanced signal transfer point
US6023474A (en) * 1996-11-22 2000-02-08 Sprint Communications C.O.L.P. Broadband telecommunications system interface
US5991301A (en) 1994-05-05 1999-11-23 Sprint Communications Co. L.P. Broadband telecommunications system
US6430195B1 (en) 1994-05-05 2002-08-06 Sprint Communications Company L.P. Broadband telecommunications system interface
US5920562A (en) * 1996-11-22 1999-07-06 Sprint Communications Co. L.P. Systems and methods for providing enhanced services for telecommunication call
US6181703B1 (en) 1995-09-08 2001-01-30 Sprint Communications Company L. P. System for managing telecommunications
US6633561B2 (en) 1994-05-05 2003-10-14 Sprint Communications Company, L.P. Method, system and apparatus for telecommunications control
US6031840A (en) * 1995-12-07 2000-02-29 Sprint Communications Co. L.P. Telecommunications system
US5590129A (en) * 1994-12-22 1996-12-31 Lucent Technologies Inc. Single stage telecommunications switch with partitioned processors
SE506922C2 (sv) * 1995-10-09 1998-03-02 Ericsson Telefon Ab L M Skyddskopplingarrangemang vid kommunikationsväljarsystem
AU2257097A (en) * 1996-02-02 1997-08-22 Sprint Communications Company, L.P. Atm gateway system
US5870550A (en) * 1996-02-26 1999-02-09 Network Engineering Software Web server employing multi-homed, moldular framework
US8117298B1 (en) 1996-02-26 2012-02-14 Graphon Corporation Multi-homed web server
US5940393A (en) * 1996-05-28 1999-08-17 Sprint Communications Co. L.P. Telecommunications system with a connection processing system
US6002689A (en) * 1996-11-22 1999-12-14 Sprint Communications Co. L.P. System and method for interfacing a local communication device
AU718960B2 (en) 1996-11-22 2000-05-04 Sprint Communications Company, L.P. System and method for transporting a call in a telecommunication network
US6115380A (en) * 1996-11-22 2000-09-05 Sprint Communications Co., L.P. Broadband telecommunications system
US6014378A (en) 1996-11-22 2000-01-11 Sprint Communications Company, L.P. Telecommunications tandem system for circuit-based traffic
US6292821B1 (en) * 1997-02-14 2001-09-18 British Telecommunications Public Limited Company Information processing
US6067299A (en) * 1997-04-16 2000-05-23 Sprint Communications Company, L.P. Communications system for providing ATM connections and echo cancellation
US6704327B1 (en) 1997-05-09 2004-03-09 Sprint Communications Company, L.P. System and method for connecting a call
US6137800A (en) * 1997-05-09 2000-10-24 Sprint Communications Company, L. P. System and method for connecting a call
US6178170B1 (en) 1997-05-13 2001-01-23 Sprint Communications Company, L. P. System and method for transporting a call
US6563918B1 (en) 1998-02-20 2003-05-13 Sprint Communications Company, LP Telecommunications system architecture for connecting a call
US6483837B1 (en) 1998-02-20 2002-11-19 Sprint Communications Company L.P. System and method for connecting a call with an interworking system
US6546022B1 (en) 1998-04-03 2003-04-08 Sprint Communications Company, L.P. Method, system and apparatus for processing information in a telecommunications system
US6160871A (en) 1998-04-10 2000-12-12 Sprint Communications Company, L.P. Communications test system
US6058116A (en) * 1998-04-15 2000-05-02 3Com Corporation Interconnected trunk cluster arrangement
US6888833B1 (en) 1998-12-22 2005-05-03 Sprint Communications Company L.P. System and method for processing call signaling
US6982950B1 (en) 1998-12-22 2006-01-03 Sprint Communications Company L.P. System and method for connecting a call in a tandem architecture
US6785282B1 (en) 1998-12-22 2004-08-31 Sprint Communications Company L.P. System and method for connecting a call with a gateway system
US6724765B1 (en) 1998-12-22 2004-04-20 Sprint Communications Company, L.P. Telecommunication call processing and connection system architecture
US6816497B1 (en) 1999-11-05 2004-11-09 Sprint Communications Company, L.P. System and method for processing a call
US6519697B1 (en) 1999-11-15 2003-02-11 Ncr Corporation Method and apparatus for coordinating the configuration of massively parallel systems
US6745240B1 (en) 1999-11-15 2004-06-01 Ncr Corporation Method and apparatus for configuring massively parallel systems
US6418526B1 (en) 1999-11-15 2002-07-09 Ncr Corporation Method and apparatus for synchronizing nodes in massively parallel systems
US6412002B1 (en) 1999-11-15 2002-06-25 Ncr Corporation Method and apparatus for selecting nodes in configuring massively parallel systems
US7441106B2 (en) * 2004-07-02 2008-10-21 Seagate Technology Llc Distributed processing in a multiple processing unit environment
US8858263B2 (en) 2011-08-08 2014-10-14 Novano Corporation Service over ethernet InterConnectable wall plate (SoEICWP) module

Family Cites Families (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3348210A (en) * 1964-12-07 1967-10-17 Bell Telephone Labor Inc Digital computer employing plural processors
AT293488B (de) * 1968-04-12 1971-10-11 Siemens Ag Verfahren zur Anschaltung zusätzlicher Koppelfeldteile an ein vorhandenes Koppelfeld in einer Fernmelde-, insbesondere Fernsprechvermittlung
CH517419A (de) * 1970-12-24 1971-12-31 Ibm Zeitmultiplex-Vermittlungseinrichtung
GB1394431A (en) * 1971-06-24 1975-05-14 Plessey Co Ltd Multiprocessor data processing system
US3781818A (en) * 1972-05-08 1973-12-25 Univ Johns Hopkins Data block multiplexing system
DE2247664C2 (de) * 1972-09-28 1974-11-14 Siemens Ag, 1000 Berlin Und 8000 Muenchen PCM-Zeitmultiplexvermittlungsverfahren
CH547590A (de) * 1973-03-21 1974-03-29 Ibm Fernmelde-vermittlungsanlage.
US3969701A (en) * 1973-04-09 1976-07-13 Telefonaktiebolaget L M Ericsson Function block oriented SPC system
FR2259507B1 (ru) * 1974-01-24 1980-01-18 Cit Alcatel
US3934232A (en) * 1974-04-25 1976-01-20 Honeywell Information Systems, Inc. Interprocessor communication apparatus for a data processing system
US3984819A (en) * 1974-06-03 1976-10-05 Honeywell Inc. Data processing interconnection techniques
US3943494A (en) * 1974-06-26 1976-03-09 International Business Machines Corporation Distributed execution processor
US3959775A (en) * 1974-08-05 1976-05-25 Gte Automatic Electric Laboratories Incorporated Multiprocessing system implemented with microprocessors
US3978455A (en) * 1974-09-09 1976-08-31 Gte Automatic Electric Laboratories Incorporated I/o structure for microprocessor implemented systems
GB1521888A (en) * 1974-10-18 1978-08-16 Post Office Time division multiplex signal processor
LU72812A1 (ru) * 1974-11-14 1975-09-29
DE2454090C2 (de) * 1974-11-14 1976-09-23 Siemens Ag Vierdrahtig durchschaltendes, eine mehrstufige Umkehrgruppierung aufweisendes Koppelfeld
US4030072A (en) * 1974-12-18 1977-06-14 Xerox Corporation Computer system operation and control
US4031512A (en) * 1975-05-29 1977-06-21 Burroughs Corporation Communications network for general purpose data communications in a heterogeneous environment
US3997896A (en) * 1975-06-30 1976-12-14 Honeywell Information Systems, Inc. Data processing system providing split bus cycle operation
JPS52109315A (en) * 1976-03-10 1977-09-13 Hitachi Ltd Channel system controlling method
US4074072A (en) * 1976-05-24 1978-02-14 Bell Telephone Laboratories, Incorporated Multiprocessor control of a partitioned switching network by control communication through the network
GB1560695A (en) * 1976-10-07 1980-02-06 Itt Ind Ltd Telecommunication exchanges
US4201891A (en) * 1978-03-17 1980-05-06 International Telephone And Telegraph Corporation Expandable digital switching network
GB1560192A (en) * 1977-02-07 1980-01-30 Int Standard Electric Corp Continuously expandable switching network
GB1583633A (en) * 1977-03-02 1981-01-28 Int Standard Electric Corp Distributed control for switching system
SE424498B (sv) * 1977-09-09 1982-07-19 Ellemtel Utvecklings Ab Digitalt veljarenet
US4146749A (en) * 1977-09-16 1979-03-27 Wescom Switching, Inc. Telecommunications network having multi-function spare network block
US4201890A (en) * 1978-03-17 1980-05-06 International Telephone And Telegraph Multiport digital switching element

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Патент US № 3974343, кл. Н 04 В 7/00, 1974. Патент US № 3860761, ил Н 04 В 7/00, 1975. *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6208660B1 (en) 1994-05-05 2001-03-27 Sprint Communications Company, L.P. Method, system and apparatus for telecommunications control
US6463052B1 (en) 1994-05-05 2002-10-08 Sprint Communications Company L.P. Method, system and apparatus for telecommunications control

Also Published As

Publication number Publication date
HU180797B (en) 1983-04-29
FR2420262A1 (fr) 1979-10-12
TR20670A (tr) 1982-04-21
YU41855B (en) 1988-02-29
NL190828C (nl) 1994-09-01
ES478733A1 (es) 1980-01-01
FR2420262B1 (fr) 1986-12-26
DK156357B (da) 1989-08-07
JPS6243598B2 (ru) 1987-09-16
SE461002B (sv) 1989-12-11
HK19484A (en) 1984-03-16
BR7901670A (pt) 1979-10-16
CA1132234A (en) 1982-09-21
IT1193180B (it) 1988-06-02
AU4501579A (en) 1979-09-20
US4201889A (en) 1980-05-06
PT69346A (en) 1979-04-01
CS7901812A1 (en) 1990-02-12
NL7902010A (nl) 1979-09-19
SG70383G (en) 1984-08-03
PL214209A1 (ru) 1980-05-05
IT7920924A0 (it) 1979-03-13
HK41185A (en) 1985-06-07
RO80673A (ro) 1983-02-01
PL135976B1 (en) 1986-01-31
HK19584A (en) 1984-03-16
ZA79942B (en) 1980-03-26
FI74574C (fi) 1988-02-08
JPS54129906A (en) 1979-10-08
AR225281A1 (es) 1982-03-15
NO790851L (no) 1979-09-18
DK108079A (da) 1979-09-18
AU521525B2 (en) 1982-04-08
SE7902266L (sv) 1979-09-18
GB2016867A (en) 1979-09-26
CS271302B2 (en) 1990-09-12
NO154290B (no) 1986-05-12
NZ189849A (en) 1982-08-17
NL190828B (nl) 1994-04-05
YU65379A (en) 1982-10-31
SG68283G (en) 1984-08-03
GB2021901B (en) 1982-04-28
SE8500078D0 (sv) 1985-01-09
GB2016867B (en) 1982-04-21
DK156357C (da) 1989-12-27
IN152065B (ru) 1983-10-08
GR66849B (ru) 1981-05-05
NO154290C (no) 1986-08-20
GB2022368B (en) 1982-04-15
EG13819A (en) 1982-12-31
GB2021901A (en) 1979-12-05
FI790838A (fi) 1979-09-18
SG68383G (en) 1984-08-03
FI74574B (fi) 1987-10-30
GB2022368A (en) 1979-12-12
MX145443A (es) 1982-02-16
SE440578B (sv) 1985-08-05

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