JPS5660154A - Key system of key telephone set - Google Patents
Key system of key telephone setInfo
- Publication number
- JPS5660154A JPS5660154A JP13596579A JP13596579A JPS5660154A JP S5660154 A JPS5660154 A JP S5660154A JP 13596579 A JP13596579 A JP 13596579A JP 13596579 A JP13596579 A JP 13596579A JP S5660154 A JPS5660154 A JP S5660154A
- Authority
- JP
- Japan
- Prior art keywords
- key
- keys
- information
- hook
- telephone set
- 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
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
- H04M9/003—Transmission of control signals from or to the key telephone set; signalling equipment at key telephone set, e.g. keyboard or display equipment
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Abstract
PURPOSE:To form a miniature good-operation key unit by using nonlock keys, by sending key information, stored in a memory circuit, as effective information when a key telephone set has its handset off the hook within a certain time. CONSTITUTION:Information on the hook switch and keys in key hook-switch unit 1 is stored in key information input circuit 2 temporarily. When the handset is placed in the off-hook state, off-hook information is outputted to hook information output line 3 and depressing keys in unit 1 sends key information to key information output line 4 corresponding to keys. Then, key information on nonlock keys depressed corresponding to a key telephone set is stored in memory circuit 5. A certain time after the nonlock keys are depressed is measured by time measuring circuit 6. When the key telephone set has the handset off the hook within the certain time, the key information stored in circuit 5 is sent out 7 as effective information. Thus, the miniature good-operation key unit can be formed by using the nonlock keys.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54135965A JPS6048958B2 (en) | 1979-10-23 | 1979-10-23 | Electric key system in button telephone equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54135965A JPS6048958B2 (en) | 1979-10-23 | 1979-10-23 | Electric key system in button telephone equipment |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5660154A true JPS5660154A (en) | 1981-05-23 |
JPS6048958B2 JPS6048958B2 (en) | 1985-10-30 |
Family
ID=15163985
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP54135965A Expired JPS6048958B2 (en) | 1979-10-23 | 1979-10-23 | Electric key system in button telephone equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6048958B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60180398A (en) * | 1984-02-28 | 1985-09-14 | Meisei Electric Co Ltd | Communications line transmission processing system |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6022870A (en) * | 1983-07-18 | 1985-02-05 | Fuji Xerox Co Ltd | Device for converting recording density |
-
1979
- 1979-10-23 JP JP54135965A patent/JPS6048958B2/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6022870A (en) * | 1983-07-18 | 1985-02-05 | Fuji Xerox Co Ltd | Device for converting recording density |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60180398A (en) * | 1984-02-28 | 1985-09-14 | Meisei Electric Co Ltd | Communications line transmission processing system |
JPH038636B2 (en) * | 1984-02-28 | 1991-02-06 | Meisei Electric Co Ltd |
Also Published As
Publication number | Publication date |
---|---|
JPS6048958B2 (en) | 1985-10-30 |
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