JPH041541B2 - - Google Patents
Info
- Publication number
- JPH041541B2 JPH041541B2 JP13613587A JP13613587A JPH041541B2 JP H041541 B2 JPH041541 B2 JP H041541B2 JP 13613587 A JP13613587 A JP 13613587A JP 13613587 A JP13613587 A JP 13613587A JP H041541 B2 JPH041541 B2 JP H041541B2
- Authority
- JP
- Japan
- Prior art keywords
- telephone
- signal
- hold
- voltage
- time
- 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
- 230000007257 malfunction Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000028161 membrane depolarization Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13613587A JPS63299640A (ja) | 1987-05-29 | 1987-05-29 | 自動保留解除装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13613587A JPS63299640A (ja) | 1987-05-29 | 1987-05-29 | 自動保留解除装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS63299640A JPS63299640A (ja) | 1988-12-07 |
JPH041541B2 true JPH041541B2 (de) | 1992-01-13 |
Family
ID=15168124
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13613587A Granted JPS63299640A (ja) | 1987-05-29 | 1987-05-29 | 自動保留解除装置 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS63299640A (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5131031A (en) * | 1989-08-24 | 1992-07-14 | Herbert Waldman | Hold circuits for telephone systems |
-
1987
- 1987-05-29 JP JP13613587A patent/JPS63299640A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS63299640A (ja) | 1988-12-07 |
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