GB1490260A - Communication system - Google Patents
Communication systemInfo
- Publication number
- GB1490260A GB1490260A GB23907/75A GB2390775A GB1490260A GB 1490260 A GB1490260 A GB 1490260A GB 23907/75 A GB23907/75 A GB 23907/75A GB 2390775 A GB2390775 A GB 2390775A GB 1490260 A GB1490260 A GB 1490260A
- Authority
- GB
- United Kingdom
- Prior art keywords
- station
- address
- register
- conference
- loop
- 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
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
-
- 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)
- Multimedia (AREA)
- Small-Scale Networks (AREA)
- Telephonic Communication Services (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Time-Division Multiplex Systems (AREA)
- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
- Alarm Systems (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH823874A CH575692A5 (xx) | 1974-06-17 | 1974-06-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1490260A true GB1490260A (en) | 1977-10-26 |
Family
ID=4337263
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB23907/75A Expired GB1490260A (en) | 1974-06-17 | 1975-06-03 | Communication system |
Country Status (14)
Country | Link |
---|---|
JP (1) | JPS597255B2 (xx) |
AT (1) | AT345351B (xx) |
BE (1) | BE830333A (xx) |
CA (1) | CA1026478A (xx) |
CH (1) | CH575692A5 (xx) |
DE (1) | DE2523906A1 (xx) |
DK (1) | DK142258B (xx) |
FR (1) | FR2275086A1 (xx) |
GB (1) | GB1490260A (xx) |
IL (1) | IL47446A (xx) |
IT (1) | IT1036322B (xx) |
NL (1) | NL7507183A (xx) |
NO (1) | NO141914C (xx) |
SE (1) | SE410545B (xx) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2132449A (en) * | 1982-12-09 | 1984-07-04 | Standard Telephones Cables Ltd | Decentralised PABX |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57111166A (en) * | 1980-12-26 | 1982-07-10 | Fujitsu Ltd | Add-on connection system |
US4544804A (en) * | 1983-01-24 | 1985-10-01 | At&T Bell Laboratories | Conference control transfer arrangement |
DE3501834A1 (de) * | 1985-01-21 | 1986-07-24 | Siemens AG, 1000 Berlin und 8000 München | Sprecheinrichtung fuer ein nachrichtenuebertragungssystem mit digitalem vierdraht-omnibuskanal |
SE449152B (sv) * | 1986-03-19 | 1987-04-06 | Paul Gosta Wilhelm Rosen | Kommunikationsanleggning innefattande ett flertal enheter vilka kan uppretthalla en konferenskoppling |
DE10062342A1 (de) * | 2000-12-14 | 2002-07-11 | Eads Defence & Security Ntwk | Verfahren und Vorrichtung zur Realisierung von Sprachkonferenzen |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH550521A (de) * | 1972-07-04 | 1974-06-14 | Hasler Ag | Verfahren zur nachrichtenuebertragung zwischen teilnehmerstellen. |
-
1974
- 1974-06-17 CH CH823874A patent/CH575692A5/xx not_active IP Right Cessation
-
1975
- 1975-05-30 DE DE19752523906 patent/DE2523906A1/de not_active Withdrawn
- 1975-05-30 AT AT413775A patent/AT345351B/de not_active IP Right Cessation
- 1975-06-03 GB GB23907/75A patent/GB1490260A/en not_active Expired
- 1975-06-04 DK DK249075AA patent/DK142258B/da not_active IP Right Cessation
- 1975-06-10 CA CA229,155A patent/CA1026478A/en not_active Expired
- 1975-06-10 IL IL47446A patent/IL47446A/en unknown
- 1975-06-12 FR FR7518438A patent/FR2275086A1/fr active Granted
- 1975-06-13 JP JP50071001A patent/JPS597255B2/ja not_active Expired
- 1975-06-16 SE SE7506860A patent/SE410545B/xx unknown
- 1975-06-16 NO NO752123A patent/NO141914C/no unknown
- 1975-06-17 NL NL7507183A patent/NL7507183A/xx not_active Application Discontinuation
- 1975-06-17 IT IT68563/75A patent/IT1036322B/it active
- 1975-06-17 BE BE157410A patent/BE830333A/xx not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2132449A (en) * | 1982-12-09 | 1984-07-04 | Standard Telephones Cables Ltd | Decentralised PABX |
Also Published As
Publication number | Publication date |
---|---|
DK142258C (xx) | 1981-02-23 |
DE2523906A1 (de) | 1976-01-08 |
NO752123L (xx) | 1975-12-18 |
AT345351B (de) | 1978-09-11 |
JPS5111505A (xx) | 1976-01-29 |
SE410545B (sv) | 1979-10-15 |
NO141914C (no) | 1980-05-28 |
IL47446A0 (en) | 1975-08-31 |
NL7507183A (nl) | 1975-12-19 |
FR2275086B1 (xx) | 1982-04-30 |
CA1026478A (en) | 1978-02-14 |
IT1036322B (it) | 1979-10-30 |
IL47446A (en) | 1977-12-30 |
DK249075A (xx) | 1975-12-18 |
ATA413775A (de) | 1978-01-15 |
SE7506860L (sv) | 1975-12-18 |
BE830333A (fr) | 1975-12-17 |
JPS597255B2 (ja) | 1984-02-17 |
FR2275086A1 (fr) | 1976-01-09 |
DK142258B (da) | 1980-09-29 |
AU8206375A (en) | 1976-12-16 |
NO141914B (no) | 1980-02-18 |
CH575692A5 (xx) | 1976-05-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3843845A (en) | Electronic key telephone system | |
GB1342781A (en) | Communication systems | |
US3522381A (en) | Time division multiplex switching system | |
GB1490260A (en) | Communication system | |
US3617637A (en) | Shared wideband communication line for private branch exchange stations | |
ES8404594A1 (es) | Un metodo de establecer conexiones de conferencia entre tres participantes en la conferencia en una red de comunicaciones multiple de division de timepo. | |
US3200205A (en) | Speech immunity voice frequency signalling system | |
US3789154A (en) | Switchhook status signaling arrangement | |
EP0066576B1 (en) | A method and apparatus for transferring the same information to a plurality of subscribers | |
US2536820A (en) | Two-way communication system | |
GB1059535A (en) | Intercommunication system with voice-frequency key dialling | |
US3321580A (en) | Hands-free communication systems including privacy features | |
US3231678A (en) | Subscriber controlled conference circuit | |
US3347989A (en) | Stock quotation switching system utilizing switching means for alternating the connection of a register and its associated trunk | |
US3626100A (en) | Subscriber subset for a pcm-loop system | |
GB1471364A (en) | Electronic telephone system | |
US3688047A (en) | Switching system charging arrangement | |
US3243515A (en) | Dial pulse register circuit | |
JPS54116802A (en) | Privacy communication system | |
JPS6031349A (ja) | キ−番号照合接続方式 | |
US3175045A (en) | Loudspeaking intercommunication system | |
GB1502255A (en) | Network radio systems | |
JPS5847367A (ja) | 一斉指令情報転送方式 | |
US2904638A (en) | Device for automatic telephone exchanges | |
JPS61212194A (ja) | ボタン電話装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |