JPS5433924B2 - - Google Patents
Info
- Publication number
- JPS5433924B2 JPS5433924B2 JP14729075A JP14729075A JPS5433924B2 JP S5433924 B2 JPS5433924 B2 JP S5433924B2 JP 14729075 A JP14729075 A JP 14729075A JP 14729075 A JP14729075 A JP 14729075A JP S5433924 B2 JPS5433924 B2 JP S5433924B2
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/82—Line monitoring circuits for call progress or status discrimination
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 |
|---|---|---|---|
| JP14729075A JPS5271905A (en) | 1975-12-12 | 1975-12-12 | Telephone set calling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14729075A JPS5271905A (en) | 1975-12-12 | 1975-12-12 | Telephone set calling system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5271905A JPS5271905A (en) | 1977-06-15 |
| JPS5433924B2 true JPS5433924B2 (en:Method) | 1979-10-24 |
Family
ID=15426851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14729075A Granted JPS5271905A (en) | 1975-12-12 | 1975-12-12 | Telephone set calling system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5271905A (en:Method) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4510407Y1 (en:Method) * | 1969-07-28 | 1970-05-13 |
-
1975
- 1975-12-12 JP JP14729075A patent/JPS5271905A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5271905A (en) | 1977-06-15 |