JPH0731658Y2 - 電話交換機 - Google Patents
電話交換機Info
- Publication number
- JPH0731658Y2 JPH0731658Y2 JP9900588U JP9900588U JPH0731658Y2 JP H0731658 Y2 JPH0731658 Y2 JP H0731658Y2 JP 9900588 U JP9900588 U JP 9900588U JP 9900588 U JP9900588 U JP 9900588U JP H0731658 Y2 JPH0731658 Y2 JP H0731658Y2
- Authority
- JP
- Japan
- Prior art keywords
- call
- intercom
- line
- extension
- signal
- 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 - Lifetime
Links
- 238000001514 detection method Methods 0.000 claims description 33
- 238000004891 communication Methods 0.000 claims description 13
- 235000013599 spices Nutrition 0.000 claims 1
- 230000005236 sound signal Effects 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 6
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 102000002067 Protein Subunits Human genes 0.000 description 2
- 108010001267 Protein Subunits Proteins 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Landscapes
- Sub-Exchange Stations And Push- Button Telephones (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9900588U JPH0731658Y2 (ja) | 1988-07-26 | 1988-07-26 | 電話交換機 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9900588U JPH0731658Y2 (ja) | 1988-07-26 | 1988-07-26 | 電話交換機 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0223181U JPH0223181U (enrdf_load_html_response) | 1990-02-15 |
| JPH0731658Y2 true JPH0731658Y2 (ja) | 1995-07-19 |
Family
ID=31325769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9900588U Expired - Lifetime JPH0731658Y2 (ja) | 1988-07-26 | 1988-07-26 | 電話交換機 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0731658Y2 (enrdf_load_html_response) |
-
1988
- 1988-07-26 JP JP9900588U patent/JPH0731658Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0223181U (enrdf_load_html_response) | 1990-02-15 |
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