JPS4917109A - - Google Patents
Info
- Publication number
- JPS4917109A JPS4917109A JP48023410A JP2341073A JPS4917109A JP S4917109 A JPS4917109 A JP S4917109A JP 48023410 A JP48023410 A JP 48023410A JP 2341073 A JP2341073 A JP 2341073A JP S4917109 A JPS4917109 A JP S4917109A
- Authority
- JP
- Japan
- 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.)
- Granted
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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/12—Arrangements providing for calling or supervisory signals
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Time-Division Multiplex Systems (AREA)
- Devices For Supply Of Signal Current (AREA)
- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH477572A CH542554A (de) | 1972-03-30 | 1972-03-30 | Verfahren zur Übermittlung von Hörzeichen und Rufsignalen in einer Zeitmultiplex-Nachrichtenanlage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS4917109A true JPS4917109A (https=) | 1974-02-15 |
| JPS5331563B2 JPS5331563B2 (https=) | 1978-09-04 |
Family
ID=4282323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2341073A Expired JPS5331563B2 (https=) | 1972-03-30 | 1973-02-28 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3899642A (https=) |
| JP (1) | JPS5331563B2 (https=) |
| CH (1) | CH542554A (https=) |
| FR (1) | FR2177751B1 (https=) |
| GB (1) | GB1402827A (https=) |
| IT (1) | IT988590B (https=) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5058911A (https=) * | 1973-09-25 | 1975-05-22 | ||
| JPS5229102A (en) * | 1975-08-29 | 1977-03-04 | Siemens Ag | Method of converting analog to digital signals and vice versa |
| JPS53136409A (en) * | 1977-05-02 | 1978-11-29 | Nippon Telegr & Teleph Corp <Ntt> | Audible tone generator for terminal equipment |
| JPS56163U (https=) * | 1980-06-17 | 1981-01-06 | ||
| JPS5660374U (https=) * | 1980-10-16 | 1981-05-22 | ||
| JPS56106532A (en) * | 1980-01-30 | 1981-08-24 | Nakajima Seisakusho | Recovery of residual feedstuff in feedstuff supply trough |
| JPH01265693A (ja) * | 1988-04-18 | 1989-10-23 | Hitachi Terekomu Technol:Kk | 着信音同期方式 |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3985965A (en) * | 1975-07-02 | 1976-10-12 | Gte Sylvania Incorporated | Digital signal generator |
| GB2128449B (en) * | 1982-10-08 | 1985-12-11 | Standard Telephones Cables Ltd | Tone generation circuit |
| GB2134752B (en) * | 1983-01-18 | 1986-08-06 | Plessey Co Plc | Tone generator |
| JPS60226270A (ja) * | 1984-04-25 | 1985-11-11 | Hitachi Ltd | 呼出信号音送出方式 |
| US5359598A (en) * | 1990-06-22 | 1994-10-25 | Unisys Corporation | Voice server for digital communication network |
| US6757276B1 (en) * | 1998-11-24 | 2004-06-29 | 3Com Corporation | Touch tone replacement for internet telephony |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT285687B (de) * | 1966-01-06 | 1970-11-10 | Max Manus | Lokaltelephonanlage |
| CH514268A (de) * | 1970-09-30 | 1971-10-15 | Ibm | Verfahren zur Zeitmultiplex-Nachrichtenübertragung und Vermittlungseinrichtung zur Durchführung des Verfahrens |
-
1972
- 1972-03-30 CH CH477572A patent/CH542554A/de not_active IP Right Cessation
-
1973
- 1973-02-06 IT IT20057/73A patent/IT988590B/it active
- 1973-02-06 FR FR7305441A patent/FR2177751B1/fr not_active Expired
- 1973-02-28 JP JP2341073A patent/JPS5331563B2/ja not_active Expired
- 1973-03-01 GB GB991673A patent/GB1402827A/en not_active Expired
- 1973-03-29 US US345938A patent/US3899642A/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5058911A (https=) * | 1973-09-25 | 1975-05-22 | ||
| JPS5229102A (en) * | 1975-08-29 | 1977-03-04 | Siemens Ag | Method of converting analog to digital signals and vice versa |
| JPS53136409A (en) * | 1977-05-02 | 1978-11-29 | Nippon Telegr & Teleph Corp <Ntt> | Audible tone generator for terminal equipment |
| JPS56106532A (en) * | 1980-01-30 | 1981-08-24 | Nakajima Seisakusho | Recovery of residual feedstuff in feedstuff supply trough |
| JPS56163U (https=) * | 1980-06-17 | 1981-01-06 | ||
| JPS5660374U (https=) * | 1980-10-16 | 1981-05-22 | ||
| JPH01265693A (ja) * | 1988-04-18 | 1989-10-23 | Hitachi Terekomu Technol:Kk | 着信音同期方式 |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2177751A1 (https=) | 1973-11-09 |
| DE2314272A1 (de) | 1973-10-11 |
| GB1402827A (en) | 1975-08-13 |
| CH542554A (de) | 1973-09-30 |
| IT988590B (it) | 1975-04-30 |
| JPS5331563B2 (https=) | 1978-09-04 |
| US3899642A (en) | 1975-08-12 |
| DE2314272B2 (de) | 1975-02-06 |
| FR2177751B1 (https=) | 1978-04-14 |