IT8223975A0 - Disposizione per chiamate telefoniche speciali multiple. - Google Patents
Disposizione per chiamate telefoniche speciali multiple.Info
- Publication number
- IT8223975A0 IT8223975A0 IT8223975A IT2397582A IT8223975A0 IT 8223975 A0 IT8223975 A0 IT 8223975A0 IT 8223975 A IT8223975 A IT 8223975A IT 2397582 A IT2397582 A IT 2397582A IT 8223975 A0 IT8223975 A0 IT 8223975A0
- Authority
- IT
- Italy
- Prior art keywords
- provision
- telephone calls
- multiple special
- special telephone
- calls
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
- H04Q11/06—Time-space-time switching
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Exchange Systems With Centralized Control (AREA)
- Telephonic Communication Services (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/316,268 US4446553A (en) | 1981-10-29 | 1981-10-29 | Arrangement for multiple custom calling |
Publications (2)
Publication Number | Publication Date |
---|---|
IT8223975A0 true IT8223975A0 (it) | 1982-10-28 |
IT1200022B IT1200022B (it) | 1989-01-05 |
Family
ID=23228315
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT23975/82A IT1200022B (it) | 1981-10-29 | 1982-10-28 | Disposizione per chiamate telefoniche speciali multiple |
Country Status (5)
Country | Link |
---|---|
US (1) | US4446553A (it) |
JP (1) | JPS5884567A (it) |
BE (1) | BE894841A (it) |
CA (1) | CA1184638A (it) |
IT (1) | IT1200022B (it) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4783796A (en) * | 1982-09-28 | 1988-11-08 | Opcom | PBX telephone call control system |
US4584680A (en) * | 1982-11-30 | 1986-04-22 | Itt Corporation | Use of a tone bus to provide polling and data distribution apparatus for communication system terminal groups |
JPS6165654A (ja) * | 1984-09-07 | 1986-04-04 | Nippo Tsushin Kogyo Kk | 自動電話交換方式 |
US4907260A (en) * | 1987-10-05 | 1990-03-06 | Ambassador College | Telephone line communications control system |
US5267305A (en) * | 1987-10-05 | 1993-11-30 | Ambassador College | Transparent inband signaling |
US5067149A (en) * | 1987-10-05 | 1991-11-19 | Ambassador College | Telephone line communications control system with dynamic call streaming |
WO1992015166A1 (en) * | 1991-02-21 | 1992-09-03 | Vmx, Inc. | Integrated application controlled call processing and messaging system |
US5619561A (en) * | 1995-06-22 | 1997-04-08 | Reese; Morris | Call-waiting and caller identification with three-way conversations arrangements |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL297472A (it) * | 1962-09-04 | |||
DE1197132B (de) * | 1964-01-28 | 1965-07-22 | Siemens Ag | Schaltungsanordnung fuer ein nach dem Zeit-multiplexprinzip arbeitendes Vermittlungs-system, insbesondere Nebenstellen-vermittlungssystem |
US3997731A (en) * | 1975-04-14 | 1976-12-14 | International Telephone And Telegraph Corporation | Apparatus for custom calling features in a telephone system |
JPS5220712A (en) * | 1975-08-11 | 1977-02-16 | Meisei Electric Co Ltd | Call waiting system |
US3967070A (en) * | 1975-08-21 | 1976-06-29 | Gte Automatic Electric Laboratories Incorporated | Memory operation for 3-way communications |
JPS5256063A (en) * | 1976-10-29 | 1977-05-09 | Matsushita Electric Works Ltd | Method of producing metal moldings from steel plate |
-
1981
- 1981-10-29 US US06/316,268 patent/US4446553A/en not_active Expired - Fee Related
-
1982
- 1982-10-18 CA CA000413604A patent/CA1184638A/en not_active Expired
- 1982-10-28 IT IT23975/82A patent/IT1200022B/it active
- 1982-10-28 BE BE2/59890A patent/BE894841A/fr not_active IP Right Cessation
- 1982-10-29 JP JP57189374A patent/JPS5884567A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
BE894841A (fr) | 1983-02-14 |
US4446553A (en) | 1984-05-01 |
CA1184638A (en) | 1985-03-26 |
JPS5884567A (ja) | 1983-05-20 |
IT1200022B (it) | 1989-01-05 |
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