JPS6410994B2 - - Google Patents
Info
- Publication number
- JPS6410994B2 JPS6410994B2 JP6806183A JP6806183A JPS6410994B2 JP S6410994 B2 JPS6410994 B2 JP S6410994B2 JP 6806183 A JP6806183 A JP 6806183A JP 6806183 A JP6806183 A JP 6806183A JP S6410994 B2 JPS6410994 B2 JP S6410994B2
- Authority
- JP
- Japan
- Prior art keywords
- telephone
- extension
- call
- tone
- circuit
- 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
- 238000001514 detection method Methods 0.000 claims description 17
- 230000005540 biological transmission Effects 0.000 claims description 16
- 230000004044 response Effects 0.000 claims description 11
- 230000007704 transition Effects 0.000 claims 1
- 238000012545 processing Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 7
- 238000004891 communication Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000012546 transfer Methods 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 3
- 239000002041 carbon nanotube Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000008186 active pharmaceutical agent Substances 0.000 description 1
- 230000004397 blinking Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 108090000237 interleukin-24 Proteins 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/002—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems
- H04M9/005—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems with subscriber controlled access to an exchange line
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6806183A JPS59193691A (ja) | 1983-04-18 | 1983-04-18 | ボタン電話装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6806183A JPS59193691A (ja) | 1983-04-18 | 1983-04-18 | ボタン電話装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59193691A JPS59193691A (ja) | 1984-11-02 |
| JPS6410994B2 true JPS6410994B2 (un) | 1989-02-22 |
Family
ID=13362888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6806183A Granted JPS59193691A (ja) | 1983-04-18 | 1983-04-18 | ボタン電話装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59193691A (un) |
-
1983
- 1983-04-18 JP JP6806183A patent/JPS59193691A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59193691A (ja) | 1984-11-02 |
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