GB2093315B - Selective operation multi-party call telephone equipment and network - Google Patents
Selective operation multi-party call telephone equipment and networkInfo
- Publication number
- GB2093315B GB2093315B GB8212498A GB8212498A GB2093315B GB 2093315 B GB2093315 B GB 2093315B GB 8212498 A GB8212498 A GB 8212498A GB 8212498 A GB8212498 A GB 8212498A GB 2093315 B GB2093315 B GB 2093315B
- Authority
- GB
- United Kingdom
- Prior art keywords
- network
- party call
- telephone equipment
- selective operation
- call telephone
- 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
- H04Q—SELECTING
- H04Q5/00—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange
- H04Q5/02—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange with direct connection for all subscribers, i.e. party-line systems
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Telephonic Communication Services (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
- Interface Circuits In Exchanges (AREA)
- Mobile Radio Communication Systems (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
HU801053A HU195713B (en) | 1980-04-29 | 1980-04-29 | Service and industrial telephone equipment to a network stringed to line for alternative or exclusive selective traffic |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2093315A GB2093315A (en) | 1982-08-25 |
GB2093315B true GB2093315B (en) | 1984-05-10 |
Family
ID=10952650
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8212498A Expired GB2093315B (en) | 1980-04-29 | 1981-04-29 | Selective operation multi-party call telephone equipment and network |
Country Status (5)
Country | Link |
---|---|
DE (1) | DE3146398C2 (en) |
GB (1) | GB2093315B (en) |
HU (1) | HU195713B (en) |
SU (1) | SU1304763A3 (en) |
WO (1) | WO1981003251A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4528424A (en) * | 1983-06-24 | 1985-07-09 | International Telephone And Telegraph Corporation | Multiparty line adapter with privacy feature controlled by reversal of line polarity at a central power source |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2285775A1 (en) * | 1974-09-17 | 1976-04-16 | Berna Guy | Intercommunication system with selective calling - uses codes signals to alert slave stations branched from common line |
DE2607493C3 (en) * | 1976-02-20 | 1978-08-03 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Special telephone system with company management |
-
1980
- 1980-04-29 HU HU801053A patent/HU195713B/en not_active IP Right Cessation
-
1981
- 1981-04-29 GB GB8212498A patent/GB2093315B/en not_active Expired
- 1981-04-29 WO PCT/HU1981/000018 patent/WO1981003251A1/en active Application Filing
- 1981-04-29 DE DE3146398T patent/DE3146398C2/en not_active Expired
-
1982
- 1982-05-28 SU SU823446900A patent/SU1304763A3/en active
Also Published As
Publication number | Publication date |
---|---|
DE3146398C2 (en) | 1985-12-12 |
DE3146398T1 (en) | 1982-09-23 |
WO1981003251A1 (en) | 1981-11-12 |
HU195713B (en) | 1988-06-28 |
SU1304763A3 (en) | 1987-04-15 |
GB2093315A (en) | 1982-08-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19930429 |