SE449152B - Kommunikationsanleggning innefattande ett flertal enheter vilka kan uppretthalla en konferenskoppling - Google Patents
Kommunikationsanleggning innefattande ett flertal enheter vilka kan uppretthalla en konferenskopplingInfo
- Publication number
- SE449152B SE449152B SE8601287A SE8601287A SE449152B SE 449152 B SE449152 B SE 449152B SE 8601287 A SE8601287 A SE 8601287A SE 8601287 A SE8601287 A SE 8601287A SE 449152 B SE449152 B SE 449152B
- Authority
- SE
- Sweden
- Prior art keywords
- units
- information
- unit
- communication system
- sampling
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/02—Arrangements for interconnection not involving centralised switching involving a common line for all parties
- H04M9/022—Multiplex systems
- H04M9/025—Time division multiplex systems, e.g. loop systems
-
- 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)
- Signal Processing (AREA)
- Multimedia (AREA)
- Time-Division Multiplex Systems (AREA)
- Telephonic Communication Services (AREA)
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE8601287A SE449152B (sv) | 1986-03-19 | 1986-03-19 | Kommunikationsanleggning innefattande ett flertal enheter vilka kan uppretthalla en konferenskoppling |
| FI871160A FI871160L (fi) | 1986-03-19 | 1987-03-17 | Kommunikationsanlaeggning. |
| EP87850090A EP0238468A3 (en) | 1986-03-19 | 1987-03-18 | A communication system |
| DK142787A DK142787A (da) | 1986-03-19 | 1987-03-19 | Kommunikationsanlaeg |
| US07/027,656 US4829513A (en) | 1986-03-19 | 1987-03-19 | Time slot summation communication system for allowing conference calls |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE8601287A SE449152B (sv) | 1986-03-19 | 1986-03-19 | Kommunikationsanleggning innefattande ett flertal enheter vilka kan uppretthalla en konferenskoppling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE8601287D0 SE8601287D0 (sv) | 1986-03-19 |
| SE449152B true SE449152B (sv) | 1987-04-06 |
Family
ID=20363900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE8601287A SE449152B (sv) | 1986-03-19 | 1986-03-19 | Kommunikationsanleggning innefattande ett flertal enheter vilka kan uppretthalla en konferenskoppling |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4829513A (da) |
| EP (1) | EP0238468A3 (da) |
| DK (1) | DK142787A (da) |
| FI (1) | FI871160L (da) |
| SE (1) | SE449152B (da) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4958343A (en) * | 1988-11-30 | 1990-09-18 | At&T Bell Laboratories | Communication channel reservation |
| US5276678A (en) * | 1990-06-18 | 1994-01-04 | Intelect, Inc. | Distributed switching and telephone conferencing system |
| JP3326292B2 (ja) * | 1994-05-24 | 2002-09-17 | 株式会社東芝 | 通信機器及びその通信方法 |
| US5483528A (en) * | 1994-10-11 | 1996-01-09 | Telex Communications, Inc. | TDM digital matrix intercom system |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3983332A (en) * | 1974-06-03 | 1976-09-28 | International Business Machines Corporation | Conference call circuitry for TDM signal exchange |
| CH575692A5 (da) * | 1974-06-17 | 1976-05-14 | Hasler Ag | |
| DE2445129B2 (de) * | 1974-09-20 | 1977-03-03 | Siemens AG, 1000 Berlin und 8000 München | Verfahren zum verbinden wenigstens dreier teilnehmer einer zeitmultiplexfernmelde-, insbesondere pcm-fernsprechvermittlungsanlage |
| US3991279A (en) * | 1975-05-23 | 1976-11-09 | Bell Telephone Laboratories, Incorporated | Monobus interface circuit |
| US4049920A (en) * | 1976-10-18 | 1977-09-20 | Bell Telephone Laboratories, Incorporated | Analog signal summing conference circuit |
| US4059735A (en) * | 1976-11-18 | 1977-11-22 | Ncr Corporation | Digital conference system |
| US4305149A (en) * | 1979-03-23 | 1981-12-08 | Small World Exchange, Inc. | Conferencing method and apparatus with multiplexed analog signals |
| DE2915488C2 (de) * | 1979-04-17 | 1982-05-19 | Nixdorf Computer Ag, 4790 Paderborn | Schaltungsanordnung zur Steuerung der Übertragung von Digital-Signalen, insbesondere PCM-Signalen, zwischen Anschlußstellen eines Zeitmultiplex-Fernmeldenetzes, insbesondere PCM-Zeitmultiplex-Fernmeldenetzes |
| US4288871A (en) * | 1979-11-05 | 1981-09-08 | Bell Telephone Laboratories, Incorporated | Digital loop conferencing signal correction arrangement |
| FR2498403A1 (fr) * | 1981-01-21 | 1982-07-23 | Telephonie Ind Commerciale | Procede et dispositif de melange de signaux basse frequence transmis par des voies temporelles differentes vers un meme organe telephonique recepteur |
| DE3222453A1 (de) * | 1982-06-15 | 1983-12-15 | Siemens AG, 1000 Berlin und 8000 München | Verfahren zur abwicklung von konferenzverbindungen in einem zeitmultiplex-fernsprech-vermittlungssystem |
| DE3305922A1 (de) * | 1982-06-15 | 1984-08-23 | Siemens AG, 1000 Berlin und 8000 München | Verfahren zur abwicklung von konferenzverbindungen in einem zeitmultiplex-fernsprech-vermittlungssystem |
| DE3223033A1 (de) * | 1982-06-19 | 1983-12-22 | Philips Kommunikations Industrie AG, 8500 Nürnberg | Verfahren und schaltungsanordnung zur herstellung von konferenzverbindungen zwischen teilnehmerstellen eines fernmeldenetzes |
| FR2530903B1 (fr) * | 1982-07-20 | 1987-11-27 | Thomson Csf Mat Tel | Dispositif de conferences multiples pour autocommutateur temporel sans reseau de connexion |
| US4499577A (en) * | 1982-10-18 | 1985-02-12 | At&T Bell Laboratories | Linear time division multiplexed conferencer for data transfer applications |
| US4606021A (en) * | 1984-08-17 | 1986-08-12 | Itt Corporation | Digital conference circuit |
-
1986
- 1986-03-19 SE SE8601287A patent/SE449152B/sv not_active IP Right Cessation
-
1987
- 1987-03-17 FI FI871160A patent/FI871160L/fi not_active Application Discontinuation
- 1987-03-18 EP EP87850090A patent/EP0238468A3/en not_active Withdrawn
- 1987-03-19 US US07/027,656 patent/US4829513A/en not_active Expired - Fee Related
- 1987-03-19 DK DK142787A patent/DK142787A/da not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| EP0238468A3 (en) | 1988-10-05 |
| EP0238468A2 (en) | 1987-09-23 |
| SE8601287D0 (sv) | 1986-03-19 |
| DK142787D0 (da) | 1987-03-19 |
| FI871160A0 (fi) | 1987-03-17 |
| FI871160A7 (fi) | 1987-09-20 |
| US4829513A (en) | 1989-05-09 |
| DK142787A (da) | 1987-09-20 |
| FI871160L (fi) | 1987-09-20 |
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|---|---|---|---|
| NAL | Patent in force |
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