CH600708A5 - - Google Patents
Info
- Publication number
- CH600708A5 CH600708A5 CH1198575A CH1198575A CH600708A5 CH 600708 A5 CH600708 A5 CH 600708A5 CH 1198575 A CH1198575 A CH 1198575A CH 1198575 A CH1198575 A CH 1198575A CH 600708 A5 CH600708 A5 CH 600708A5
- Authority
- CH
- Switzerland
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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Time-Division Multiplex Systems (AREA)
- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19742445129 DE2445129B2 (de) | 1974-09-20 | 1974-09-20 | Verfahren zum verbinden wenigstens dreier teilnehmer einer zeitmultiplexfernmelde-, insbesondere pcm-fernsprechvermittlungsanlage |
Publications (1)
Publication Number | Publication Date |
---|---|
CH600708A5 true CH600708A5 (pm) | 1978-06-30 |
Family
ID=5926377
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH1198575A CH600708A5 (pm) | 1974-09-20 | 1975-09-16 |
Country Status (10)
Country | Link |
---|---|
US (1) | US4049921A (pm) |
AT (1) | AT344256B (pm) |
BE (1) | BE833623A (pm) |
CH (1) | CH600708A5 (pm) |
DE (1) | DE2445129B2 (pm) |
FR (1) | FR2285767A1 (pm) |
GB (1) | GB1514328A (pm) |
IT (1) | IT1042640B (pm) |
NL (1) | NL7510671A (pm) |
SE (1) | SE403237B (pm) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0017835A1 (de) * | 1979-04-17 | 1980-10-29 | Siemens Nixdorf Informationssysteme Aktiengesellschaft | Schaltungsanordnung zur Steuerung der Übertragung von Digital-Signalen, insbesondere PCM-Signalen, zwischen Anschlussstellen eines Zeitmultiplex-Fernmeldenetzes, insbesondere PCM-Zeitmultiplex-Fernmeldenetzes |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4109111A (en) * | 1977-08-23 | 1978-08-22 | Digital Switch Corporation | Method and apparatus for establishing conference calls in a time division multiplex pulse code modulation switching system |
US4225956A (en) * | 1978-08-28 | 1980-09-30 | E-Systems, Inc. | Multiplex conference bridge |
US4288871A (en) * | 1979-11-05 | 1981-09-08 | Bell Telephone Laboratories, Incorporated | Digital loop conferencing signal correction arrangement |
US4300231A (en) * | 1979-12-31 | 1981-11-10 | Bell Telephone Laboratories, Incorporated | Digital system error correction arrangement |
DE3005162A1 (de) * | 1980-02-12 | 1981-08-20 | Siemens AG, 1000 Berlin und 8000 München | Verfahren zur einspeisung von hoertoenen in konferenzverbindungen |
US4416007A (en) * | 1981-11-20 | 1983-11-15 | Bell Telephone Laboratories, Incorporated | Digital conferencing method and arrangement |
US4430734A (en) * | 1981-12-14 | 1984-02-07 | Bell Telephone Laboratories, Incorporated | Demultiplexer circuit |
US4432087A (en) * | 1982-08-16 | 1984-02-14 | Bell Telephone Laboratories, Incorporated | Demultiplexer circuit |
CA1261022A (en) * | 1985-03-12 | 1989-09-26 | Harutada Ohya | Multiplex transmission system |
SE449152B (sv) * | 1986-03-19 | 1987-04-06 | Paul Gosta Wilhelm Rosen | Kommunikationsanleggning innefattande ett flertal enheter vilka kan uppretthalla en konferenskoppling |
US5191593A (en) * | 1991-05-31 | 1993-03-02 | Motorola, Inc. | Conference call feature for spread spectrum cordless telephone |
US7903589B2 (en) * | 2009-02-26 | 2011-03-08 | Embarq Holdings Company Llc | System and method for providing caller identification for a TDM conference call |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1187488A (en) * | 1967-10-25 | 1970-04-08 | Int Standard Electric Corp | Telecommunication System |
US3551600A (en) * | 1968-02-23 | 1970-12-29 | Stromberg Carlson Corp | High capacity,high side-tone suppression,4-wire conference circuit |
GB1458032A (en) * | 1973-02-05 | 1976-12-08 | Gen Electric Co Ltd | Conference circuits for use in telecommunications systems |
US3835259A (en) * | 1973-03-22 | 1974-09-10 | Bell Telephone Labor Inc | Time division conference hybrid circuit |
US3828146A (en) * | 1973-03-22 | 1974-08-06 | Bell Telephone Labor Inc | Time division conference hybrid circuit |
-
1974
- 1974-09-20 DE DE19742445129 patent/DE2445129B2/de active Granted
-
1975
- 1975-07-24 AT AT573875A patent/AT344256B/de not_active IP Right Cessation
- 1975-09-10 NL NL7510671A patent/NL7510671A/xx not_active Application Discontinuation
- 1975-09-16 FR FR7528363A patent/FR2285767A1/fr active Pending
- 1975-09-16 CH CH1198575A patent/CH600708A5/xx not_active IP Right Cessation
- 1975-09-18 US US05/614,513 patent/US4049921A/en not_active Expired - Lifetime
- 1975-09-18 IT IT27353/75A patent/IT1042640B/it active
- 1975-09-18 GB GB38304/75A patent/GB1514328A/en not_active Expired
- 1975-09-19 BE BE160208A patent/BE833623A/xx unknown
- 1975-09-19 SE SE7510542A patent/SE403237B/xx unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0017835A1 (de) * | 1979-04-17 | 1980-10-29 | Siemens Nixdorf Informationssysteme Aktiengesellschaft | Schaltungsanordnung zur Steuerung der Übertragung von Digital-Signalen, insbesondere PCM-Signalen, zwischen Anschlussstellen eines Zeitmultiplex-Fernmeldenetzes, insbesondere PCM-Zeitmultiplex-Fernmeldenetzes |
Also Published As
Publication number | Publication date |
---|---|
NL7510671A (nl) | 1976-03-23 |
IT1042640B (it) | 1980-01-30 |
DE2445129B2 (de) | 1977-03-03 |
BE833623A (fr) | 1976-03-19 |
SE7510542L (sv) | 1976-05-21 |
SE403237B (sv) | 1978-07-31 |
DE2445129A1 (de) | 1976-04-01 |
US4049921A (en) | 1977-09-20 |
FR2285767A1 (fr) | 1976-04-16 |
GB1514328A (en) | 1978-06-14 |
AT344256B (de) | 1978-07-10 |
ATA573875A (de) | 1977-11-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PL | Patent ceased | ||
PL | Patent ceased |