GB1528240A - Conference circuits for telephone exchanges of digital type - Google Patents

Conference circuits for telephone exchanges of digital type

Info

Publication number
GB1528240A
GB1528240A GB32050/76A GB3205076A GB1528240A GB 1528240 A GB1528240 A GB 1528240A GB 32050/76 A GB32050/76 A GB 32050/76A GB 3205076 A GB3205076 A GB 3205076A GB 1528240 A GB1528240 A GB 1528240A
Authority
GB
United Kingdom
Prior art keywords
codes
conference
subscribers
pair
combined
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
GB32050/76A
Other languages
English (en)
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.)
Siemens SpA
Original Assignee
Siemens SpA
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 Siemens SpA filed Critical Siemens SpA
Publication of GB1528240A publication Critical patent/GB1528240A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Complex Calculations (AREA)
GB32050/76A 1975-07-31 1976-08-02 Conference circuits for telephone exchanges of digital type Expired GB1528240A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT25950/75A IT1040208B (it) 1975-07-31 1975-07-31 Circuito cnferenza per centrali telefonische di commutazione di tipo numperico

Publications (1)

Publication Number Publication Date
GB1528240A true GB1528240A (en) 1978-10-11

Family

ID=11218237

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32050/76A Expired GB1528240A (en) 1975-07-31 1976-08-02 Conference circuits for telephone exchanges of digital type

Country Status (12)

Country Link
JP (1) JPS5218108A (enExample)
AR (1) AR209981A1 (enExample)
AU (1) AU497812B2 (enExample)
BR (1) BR7604885A (enExample)
DE (1) DE2634345A1 (enExample)
FR (1) FR2320015A1 (enExample)
GB (1) GB1528240A (enExample)
IN (1) IN143837B (enExample)
IT (1) IT1040208B (enExample)
NL (1) NL7608295A (enExample)
SE (1) SE7608445L (enExample)
TR (1) TR19323A (enExample)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4408323A (en) 1981-06-29 1983-10-04 Bell Telephone Laboratories, Incorporated Processor facilities for integrated packet and voice switching
GB2128448A (en) * 1982-10-08 1984-04-26 Standard Telephones Cables Ltd Telephone exchange conference circuit
USRE31651E (en) * 1977-10-12 1984-08-21 Bell Telephone Laboratories, Incorporated Communication system using intelligent network processor

Families Citing this family (5)

* 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
DE3005739C2 (de) * 1980-02-15 1988-11-10 Nixdorf Computer Ag, 4790 Paderborn Verfahren zur Steuerung der Übertragung von PCM-Signalen zwischen Anschlußstellen eines PCM-Zeitmultiplex-Fernmeldenetzes in einem Konferenzbetrieb und Schaltungsanordnung zur Druchführung des Verfahrens
GB2103848B (en) * 1981-08-20 1985-04-11 Standard Telephones Cables Ltd Pcm system
FR2524750A1 (fr) * 1982-03-30 1983-10-07 Telecommunications Sa Systeme de visioconference multisalle
FR2533784B1 (fr) * 1982-09-28 1989-06-30 Thomson Csf Mat Tel Dispositif de conferences multiples pour autocommutateur temporel mic avec reseau de connexion

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE31651E (en) * 1977-10-12 1984-08-21 Bell Telephone Laboratories, Incorporated Communication system using intelligent network processor
US4408323A (en) 1981-06-29 1983-10-04 Bell Telephone Laboratories, Incorporated Processor facilities for integrated packet and voice switching
GB2128448A (en) * 1982-10-08 1984-04-26 Standard Telephones Cables Ltd Telephone exchange conference circuit
US4566096A (en) * 1982-10-08 1986-01-21 Standard Telephones And Cables, Public Limited Company Telephone exchange conference circuit

Also Published As

Publication number Publication date
SE7608445L (sv) 1977-05-09
AU497812B2 (en) 1979-01-11
AU1636576A (en) 1978-02-02
AR209981A1 (es) 1977-06-15
IT1040208B (it) 1979-12-20
BR7604885A (pt) 1977-08-09
DE2634345A1 (de) 1977-02-17
NL7608295A (nl) 1977-02-02
FR2320015B1 (enExample) 1981-09-25
TR19323A (tr) 1978-11-28
FR2320015A1 (fr) 1977-02-25
IN143837B (enExample) 1978-02-11
JPS5218108A (en) 1977-02-10

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee