ES447276A1 - Method and apparatus for establishing a plurality of simultaneous conferences in a pcm switching system - Google Patents

Method and apparatus for establishing a plurality of simultaneous conferences in a pcm switching system

Info

Publication number
ES447276A1
ES447276A1 ES447276A ES447276A ES447276A1 ES 447276 A1 ES447276 A1 ES 447276A1 ES 447276 A ES447276 A ES 447276A ES 447276 A ES447276 A ES 447276A ES 447276 A1 ES447276 A1 ES 447276A1
Authority
ES
Spain
Prior art keywords
frame
establishing
store
incoming
results
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
ES447276A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nortel Networks Ltd
Original Assignee
Northern Telecom Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Northern Telecom Ltd filed Critical Northern Telecom Ltd
Publication of ES447276A1 publication Critical patent/ES447276A1/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
    • H04M3/561—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities by multiplexing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

Method and apparatus for establishing a plurality of simultaneous conferences in waveform pulse modulation switching systems of the type employed in time division switching systems where a plurality of incoming channels carry pulse code modulated speech signals and they are arranged in sequential time frames, each one establishing simultaneous conferences between at least three predetermined channels, the procedure being characterized by comprising the steps of storing an incoming frame; simultaneously make the stored frame and store the next incoming frame; store intermediate elaboration results for each conference; store final processing results for each channel; and transmit the final results beginning with the beginning or the frame that follows said next incoming data frame and ending with the end thereof. (Machine-translation by Google Translate, not legally binding)
ES447276A 1975-04-23 1976-04-23 Method and apparatus for establishing a plurality of simultaneous conferences in a pcm switching system Expired ES447276A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA225,276A CA1027265A (en) 1975-04-23 1975-04-23 Method and apparatus for establishing a plurality of simultaneous conferences in a pcm switching system

Publications (1)

Publication Number Publication Date
ES447276A1 true ES447276A1 (en) 1977-07-01

Family

ID=4102890

Family Applications (1)

Application Number Title Priority Date Filing Date
ES447276A Expired ES447276A1 (en) 1975-04-23 1976-04-23 Method and apparatus for establishing a plurality of simultaneous conferences in a pcm switching system

Country Status (13)

Country Link
JP (1) JPS5916459B2 (en)
BE (1) BE841099A (en)
CA (1) CA1027265A (en)
DE (1) DE2617344C2 (en)
DK (1) DK156866C (en)
ES (1) ES447276A1 (en)
FR (1) FR2309086A1 (en)
GB (1) GB1529106A (en)
IE (1) IE43367B1 (en)
IT (1) IT1059227B (en)
NL (1) NL7604258A (en)
NO (1) NO761343L (en)
SE (1) SE420556B (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4112258A (en) * 1977-10-12 1978-09-05 Bell Telephone Laboratories, Incorporated Communication system using intelligent network processor
FR2475328B1 (en) * 1979-11-21 1988-06-24 Int Standard Electric Corp DIGITAL TELECOMMUNICATIONS SWITCHING SYSTEM PROVIDED WITH CONFERENCE CONNECTION MEANS OF ONE OR MORE GROUPS OF TERMINALS
FR2470495B1 (en) * 1979-11-21 1988-06-24 Int Standard Electric Corp DIGITAL TELECOMMUNICATIONS SWITCHING SYSTEM CAPABLE OF ESTABLISHING MULTILATERAL TELECONFERENCE AND SELECTIVE INFORMATION OR SIGNAL BROADCAST CONNECTIONS
DE3005739C2 (en) * 1980-02-15 1988-11-10 Nixdorf Computer Ag, 4790 Paderborn Method for controlling the transmission of PCM signals between connection points of a PCM time division multiplex telecommunications network in a conference operation and circuit arrangement for carrying out the method
US4408323A (en) 1981-06-29 1983-10-04 Bell Telephone Laboratories, Incorporated Processor facilities for integrated packet and voice switching
DE3147492A1 (en) * 1981-12-01 1983-06-09 Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt Circuit arrangement for setting up conference connections in telecommunications exchanges, in particular telephone exchanges, with digital through-connection using the PCM method
US4430734A (en) * 1981-12-14 1984-02-07 Bell Telephone Laboratories, Incorporated Demultiplexer circuit
US4485469A (en) * 1982-08-30 1984-11-27 At&T Bell Laboratories Time slot interchanger
FR2533784B1 (en) * 1982-09-28 1989-06-30 Thomson Csf Mat Tel MULTIPLE CONFERENCE DEVICE FOR MIC TIME STICKERS WITH CONNECTION NETWORK
GB2128448B (en) * 1982-10-08 1985-11-13 Standard Telephones Cables Ltd Telephone exchange conference circuit
GB2134751B (en) * 1983-01-18 1986-07-30 Plessey Co Plc Conference bridge
GB8301323D0 (en) * 1983-01-18 1983-02-16 Plessey Co Plc Conference bridge
GB8324058D0 (en) * 1983-09-08 1983-10-12 Plessey Co Plc Conference bridge circuit arrangement
JPS60253361A (en) * 1984-05-30 1985-12-14 Fujitsu Ltd Exchange system containing conference call function
JPS6190564A (en) * 1984-10-11 1986-05-08 Iwatsu Electric Co Ltd Conference calling system
JPS61123800U (en) * 1985-01-21 1986-08-04

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1547633A (en) * 1967-10-16 1968-11-29 Labo Cent Telecommunicat Circuit for adding binary numbers from non-linear signal coding
US3551600A (en) * 1968-02-23 1970-12-29 Stromberg Carlson Corp High capacity,high side-tone suppression,4-wire conference circuit
FR1602502A (en) * 1968-04-11 1970-12-21
US3604855A (en) * 1970-01-02 1971-09-14 Stromberg Carlson Corp Digital conference circuit for pcm signalling system
DE2048198C2 (en) * 1970-09-30 1975-10-09 Siemens Ag, 1000 Berlin Und 8000 Muenchen Circuit arrangement for establishing conference connections in a PCM telecommunications, in particular telephone exchange

Also Published As

Publication number Publication date
GB1529106A (en) 1978-10-18
SE420556B (en) 1981-10-12
CA1027265A (en) 1978-02-28
FR2309086B1 (en) 1982-08-20
SE7604727L (en) 1976-10-24
NO761343L (en) 1976-10-26
JPS51135405A (en) 1976-11-24
IT1059227B (en) 1982-05-31
DK156866B (en) 1989-10-09
FR2309086A1 (en) 1976-11-19
JPS5916459B2 (en) 1984-04-16
DE2617344A1 (en) 1976-11-04
DK181676A (en) 1976-10-24
IE43367B1 (en) 1981-02-11
DE2617344C2 (en) 1986-07-17
DK156866C (en) 1990-02-26
NL7604258A (en) 1976-10-26
BE841099A (en) 1976-08-16
IE43367L (en) 1976-10-23

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