IT989225B - Perfezionamenti apportati ai gruppi di organi di una centra le di telecomunicazione - Google Patents
Perfezionamenti apportati ai gruppi di organi di una centra le di telecomunicazioneInfo
- Publication number
- IT989225B IT989225B IT25462/73A IT2546273A IT989225B IT 989225 B IT989225 B IT 989225B IT 25462/73 A IT25462/73 A IT 25462/73A IT 2546273 A IT2546273 A IT 2546273A IT 989225 B IT989225 B IT 989225B
- Authority
- IT
- Italy
- Prior art keywords
- organs
- groups
- improvements made
- telecommunication center
- telecommunication
- Prior art date
Links
- 210000000056 organ Anatomy 0.000 title 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite
- H04Q3/62—Arrangements providing connection between main exchange and sub-exchange or satellite for connecting to private branch exchanges
- H04Q3/625—Arrangements in the private branch exchange
Landscapes
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
- Exchange Systems With Centralized Control (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7221890A FR2190327A6 (US07217764-20070515-C00014.png) | 1972-06-16 | 1972-06-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IT989225B true IT989225B (it) | 1975-05-20 |
Family
ID=9100350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT25462/73A IT989225B (it) | 1972-06-16 | 1973-06-18 | Perfezionamenti apportati ai gruppi di organi di una centra le di telecomunicazione |
Country Status (9)
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100241914B1 (ko) | 1997-08-27 | 2000-10-02 | 윤종용 | 사설교환시스템에서 중계대를 통한 메시지 확인방법 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE622151A (US07217764-20070515-C00014.png) * | 1961-09-05 | |||
| US3115552A (en) * | 1961-11-28 | 1963-12-24 | American Telephone & Telegraph | Telephone switching system |
| DE1249353B (de) * | 1963-01-21 | 1967-09-07 | Western Electric Company Incorporated, New York, N. Y. (V. St. A.) | Schaltungsanordnung zur Steuerung eines Fernsprechvermittlungssystems |
| GB1084099A (US07217764-20070515-C00014.png) * | 1963-12-20 |
-
1972
- 1972-06-16 FR FR7221890A patent/FR2190327A6/fr not_active Expired
-
1973
- 1973-06-12 CH CH849473A patent/CH578295A5/xx not_active IP Right Cessation
- 1973-06-12 BE BE1005142A patent/BE800754A/xx unknown
- 1973-06-14 NL NL7308303A patent/NL7308303A/xx not_active Application Discontinuation
- 1973-06-15 SE SE7308449A patent/SE405058B/xx unknown
- 1973-06-15 DE DE2330558A patent/DE2330558A1/de not_active Withdrawn
- 1973-06-18 GB GB2876173A patent/GB1433816A/en not_active Expired
- 1973-06-18 US US05/370,695 patent/US3944751A/en not_active Expired - Lifetime
- 1973-06-18 IT IT25462/73A patent/IT989225B/it active
Also Published As
| Publication number | Publication date |
|---|---|
| BE800754A (fr) | 1973-12-12 |
| FR2190327A6 (US07217764-20070515-C00014.png) | 1974-01-25 |
| GB1433816A (en) | 1976-04-28 |
| CH578295A5 (US07217764-20070515-C00014.png) | 1976-07-30 |
| US3944751A (en) | 1976-03-16 |
| NL7308303A (US07217764-20070515-C00014.png) | 1973-12-18 |
| DE2330558A1 (de) | 1974-01-03 |
| SE405058B (sv) | 1978-11-13 |
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