JPS60158385U - 電話受付設備 - Google Patents
電話受付設備Info
- Publication number
- JPS60158385U JPS60158385U JP4245585U JP4245585U JPS60158385U JP S60158385 U JPS60158385 U JP S60158385U JP 4245585 U JP4245585 U JP 4245585U JP 4245585 U JP4245585 U JP 4245585U JP S60158385 U JPS60158385 U JP S60158385U
- Authority
- JP
- Japan
- Prior art keywords
- microphone
- jack
- potential
- signal
- array
- 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.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims 2
- 230000004913 activation Effects 0.000 claims 1
- 230000005236 sound signal Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/60—Semi-automatic systems, i.e. in which the numerical selection of the outgoing line is under the control of an operator
- H04M3/62—Keyboard equipment
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
- Telephone Set Structure (AREA)
- Mobile Radio Communication Systems (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA450639 | 1984-03-27 | ||
| CA000450639A CA1204237A (en) | 1984-03-27 | 1984-03-27 | Keyboard security for a telephone attendant console |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60158385U true JPS60158385U (ja) | 1985-10-22 |
| JPH036064Y2 JPH036064Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1991-02-15 |
Family
ID=4127524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4245585U Granted JPS60158385U (ja) | 1984-03-27 | 1985-03-26 | 電話受付設備 |
Country Status (6)
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3851111A (en) * | 1973-09-14 | 1974-11-26 | Gte Automatic Electric Lab Inc | Tsps-headphone plug messages |
| US4458813A (en) * | 1982-01-21 | 1984-07-10 | Superscope, Inc. | Housing for a video cassette playback machine |
| US4562310A (en) * | 1984-03-29 | 1985-12-31 | Northern Telecom Limited | Keyboard security for a telephone attendant console |
-
1984
- 1984-03-27 CA CA000450639A patent/CA1204237A/en not_active Expired
-
1985
- 1985-02-08 EP EP85300851A patent/EP0157474A3/en not_active Ceased
- 1985-03-01 AU AU39420/85A patent/AU573785B2/en not_active Ceased
- 1985-03-06 NZ NZ21132585A patent/NZ211325A/en unknown
- 1985-03-26 JP JP4245585U patent/JPS60158385U/ja active Granted
- 1985-04-01 CN CN85101046A patent/CN85101046B/zh not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| AU573785B2 (en) | 1988-06-23 |
| CN85101046A (zh) | 1987-01-10 |
| CN85101046B (zh) | 1988-07-20 |
| NZ211325A (en) | 1988-02-29 |
| EP0157474A3 (en) | 1988-06-15 |
| EP0157474A2 (en) | 1985-10-09 |
| CA1204237A (en) | 1986-05-06 |
| JPH036064Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1991-02-15 |
| AU3942085A (en) | 1985-10-03 |