DK181676A - PROCEDURE AND APPARATUS FOR ESTABLISHING A NUMBER OF SIMULTANEOUS CONFERENCE CONNECTIONS IN A PCM TIME MULTIPLEX SYSTEM - Google Patents

PROCEDURE AND APPARATUS FOR ESTABLISHING A NUMBER OF SIMULTANEOUS CONFERENCE CONNECTIONS IN A PCM TIME MULTIPLEX SYSTEM

Info

Publication number: DK181676A
Authority: DK; Denmark
Prior art keywords: establishing; procedure; multiplex system; time multiplex; pcm time
Prior art date: 1975-04-23

Application number

DK181676A

Other languages

Danish (da)

Other versions

DK156866B (en

DK156866C (en

Inventor

S A Inrig

A S J Chapman

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.)

1975-04-23

Filing date

1976-04-22

Publication date

1976-10-24

1976-04-22 Application filed by Northern Telecom Ltd filed Critical Northern Telecom Ltd

1976-10-24 Publication of DK181676A publication Critical patent/DK181676A/en

1989-10-09 Publication of DK156866B publication Critical patent/DK156866B/en

1990-02-26 Application granted granted Critical

1990-02-26 Publication of DK156866C publication Critical patent/DK156866C/en

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)

DK181676A 1975-04-23 1976-04-22 PROCEDURE AND APPARATUS FOR ESTABLISHING A NUMBER OF SIMULTANEF CONFERENCE CONNECTIONS IN A PCM TIME MULTIPLE SYSTEM DK156866C (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
CA225276		1975-04-23
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 (3)

Publication Number	Publication Date
DK181676A true DK181676A (en)	1976-10-24
DK156866B DK156866B (en)	1989-10-09
DK156866C DK156866C (en)	1990-02-26

Family

ID=4102890

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DK181676A DK156866C (en)	1975-04-23	1976-04-22	PROCEDURE AND APPARATUS FOR ESTABLISHING A NUMBER OF SIMULTANEF CONFERENCE CONNECTIONS IN A PCM TIME MULTIPLE 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
GB8301323D0 (en) *	1983-01-18	1983-02-16	Plessey Co Plc	Conference bridge
GB2134751B (en) *	1983-01-18	1986-07-30	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 with conference call function
JPS6190564A (en) *	1984-10-11	1986-05-08	Iwatsu Electric Co Ltd	Conference call method
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

1975
- 1975-04-23 CA CA225,276A patent/CA1027265A/en not_active Expired
1976
- 1976-04-02 GB GB13469/76A patent/GB1529106A/en not_active Expired
- 1976-04-20 IT IT22482/76A patent/IT1059227B/en active
- 1976-04-21 JP JP51044518A patent/JPS5916459B2/en not_active Expired
- 1976-04-21 DE DE2617344A patent/DE2617344C2/en not_active Expired
- 1976-04-21 NO NO761343A patent/NO761343L/no unknown
- 1976-04-22 NL NL7604258A patent/NL7604258A/en not_active Application Discontinuation
- 1976-04-22 IE IE854/76A patent/IE43367B1/en unknown
- 1976-04-22 DK DK181676A patent/DK156866C/en not_active IP Right Cessation
- 1976-04-23 ES ES447276A patent/ES447276A1/en not_active Expired
- 1976-04-23 SE SE7604727A patent/SE420556B/en not_active IP Right Cessation
- 1976-04-23 FR FR7612173A patent/FR2309086A1/en active Granted
- 1976-04-23 BE BE166445A patent/BE841099A/en unknown

Also Published As

Publication number	Publication date
NO761343L (en)	1976-10-26
BE841099A (en)	1976-08-16
SE7604727L (en)	1976-10-24
GB1529106A (en)	1978-10-18
SE420556B (en)	1981-10-12
IE43367L (en)	1976-10-23
DE2617344C2 (en)	1986-07-17
NL7604258A (en)	1976-10-26
FR2309086B1 (en)	1982-08-20
FR2309086A1 (en)	1976-11-19
IE43367B1 (en)	1981-02-11
DE2617344A1 (en)	1976-11-04
CA1027265A (en)	1978-02-28
JPS5916459B2 (en)	1984-04-16
ES447276A1 (en)	1977-07-01
DK156866B (en)	1989-10-09
JPS51135405A (en)	1976-11-24
DK156866C (en)	1990-02-26
IT1059227B (en)	1982-05-31

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Legal Events

Date	Code	Title	Description
1993-12-27	PBP	Patent lapsed