SE314414B - - Google Patents

Info

Publication number
SE314414B
SE314414B SE2588/63A SE258863A SE314414B SE 314414 B SE314414 B SE 314414B SE 2588/63 A SE2588/63 A SE 2588/63A SE 258863 A SE258863 A SE 258863A SE 314414 B SE314414 B SE 314414B
Authority
SE
Sweden
Prior art keywords
subscribers
conference
subscriber
branch
register
Prior art date
Application number
SE2588/63A
Other languages
English (en)
Inventor
A Zarouni
Original Assignee
Western Electric Co
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 Western Electric Co filed Critical Western Electric Co
Publication of SE314414B publication Critical patent/SE314414B/xx

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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0004—Selecting arrangements using crossbar selectors in the switching stages

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
SE2588/63A 1962-03-08 1963-03-08 SE314414B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US178329A US3133994A (en) 1962-03-08 1962-03-08 Conference circuit for telephone switching systems

Publications (1)

Publication Number Publication Date
SE314414B true SE314414B (it) 1969-09-08

Family

ID=22652117

Family Applications (1)

Application Number Title Priority Date Filing Date
SE2588/63A SE314414B (it) 1962-03-08 1963-03-08

Country Status (8)

Country Link
US (1) US3133994A (it)
JP (1) JPS408564B1 (it)
BE (1) BE629372A (it)
DE (1) DE1273596B (it)
FR (1) FR1353732A (it)
GB (1) GB973478A (it)
NL (1) NL289144A (it)
SE (1) SE314414B (it)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE629926A (it) * 1962-03-22
US3301962A (en) * 1963-04-29 1967-01-31 Bell Telephone Labor Inc Directional conference system
US3322901A (en) * 1964-03-31 1967-05-30 American Telephone & Telegraph Pbx dial conference trunk circuit
US3377433A (en) * 1964-12-02 1968-04-09 Bell Telephone Labor Inc Switching system arrangement for providing multiple switching network line appearances without preassignment
US3496303A (en) * 1966-10-18 1970-02-17 Stromberg Carlson Corp Universal junctor with special features trunk
US3504130A (en) * 1966-10-24 1970-03-31 Bell Telephone Labor Inc Switching system for establishing conference connections
US3527889A (en) * 1967-03-01 1970-09-08 New North Electric Co Conference communication system
BE791689A (fr) * 1971-11-24 1973-03-16 Western Electric Co Circuit de ligne telephonique
GB1602474A (en) 1977-10-06 1981-11-11 Warman B J Device for establishing conference calls via at least one telephone exchange switching system
FR2592541B1 (fr) * 1985-12-31 1991-10-11 Leroy Alain Terminal telephonique de teleconference.

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1074665B (de) * 1960-02-04 Standard Elektrik Lorenz Aktiengesellschaft, Stuttgart-Zuffenhausen Schaltungsanordnung für eine Konferenzeinrichtung in Fernsprechnebenstellenanlagen
DE414609C (de) * 1921-02-05 1925-06-06 Automatic Electric Co Schaltungsanordnung fuer Fernsprechanlagen mit Einrichtungen zur Fuehrung von Gruppengespraechen
DE561531C (de) * 1928-10-03 1932-10-15 Hans Decker Dr Schaltungsanordnung zur Abhaltung von Konferenzgespraechen
DE606861C (de) * 1932-12-28 1934-12-13 Mix & Genest Akt Ges Schaltungsanordnung fuer Konferenz-Fernsprechanlagen mit Nachbildung des Konferenznetzes
US2154379A (en) * 1936-05-23 1939-04-11 Western Union Telegraph Co Method of and apparatus for testing relays
DE872372C (de) * 1943-10-24 1953-03-30 Siemens Ag Fernkonferenzschaltung ueber Fernleitungen mit einer beliebigen Zahl von Teilnehmern
US2894074A (en) * 1955-02-25 1959-07-07 Gen Dynamics Corp Telephone conference circuit
US2912523A (en) * 1955-10-26 1959-11-10 Industrial Res Prod Inc Electro-acoustic transducer
US2848548A (en) * 1955-12-01 1958-08-19 Gen Dynamics Corp Conference circuit
US2975237A (en) * 1959-12-23 1961-03-14 Bell Telephone Labor Inc Telephone conference circuit

Also Published As

Publication number Publication date
NL289144A (it)
DE1273596B (de) 1968-07-25
GB973478A (en) 1964-10-28
JPS408564B1 (it) 1965-05-04
US3133994A (en) 1964-05-19
BE629372A (it)
FR1353732A (fr) 1964-02-28

Similar Documents

Publication Publication Date Title
SE318914B (it)
SE314414B (it)
US3210476A (en) Automatic switching circuits for establishing conference connections
JPS5462711A (en) Processing system for answer of private branch exchange
US3268667A (en) Electronic switching telephone system
GB1283968A (en) Switching systems
GB1001903A (en) Improvements in or relating to automatic telecommunication exchanges
SE327219B (it)
US3544727A (en) Arrangement for establishing conference connections in communication switching systems
GB1239591A (it)
GB1066589A (en) Telephone switching systems
GB1471364A (en) Electronic telephone system
US3534175A (en) Private branch exchange conference circuit with restriction of trunk connections
AU459087B2 (en) Supervisory lamp system for telephone conference connection and call transfer devices
US3643033A (en) Automatic private branch exchange with provision for operator assistance
GB1115307A (en) Telephone systems
US3137771A (en) Paging system
US2840641A (en) Telephone systems
GB1060720A (en) Telephone switching systems
SE317413B (it)
US3417204A (en) Telephone trunk circuit
GB990545A (en) Telephone concentrator systems
GB938166A (en) Selection system for electric circuits or equipment
US3577154A (en) Code call facility for electronic telephone exchange
GB1265084A (it)