JPS63117139U - - Google Patents
Info
- Publication number
- JPS63117139U JPS63117139U JP763587U JP763587U JPS63117139U JP S63117139 U JPS63117139 U JP S63117139U JP 763587 U JP763587 U JP 763587U JP 763587 U JP763587 U JP 763587U JP S63117139 U JPS63117139 U JP S63117139U
- Authority
- JP
- Japan
- Prior art keywords
- switch
- timer
- turned
- line
- loop
- 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
Description
第１図はこの考案の一実施例による電話機を示
す回路図、第２図はその動作を説明するためのタ
イミングチヤート、第３図は従来の電話器を示す
回路図である。
３はフツクスイツチ、１２は保留スイツチ、２
０は検知手段（連動スイツチ）、２３はタイマ、
２５は開放手段（開放スイツチ）。なお、図中、
同一符号は同一、又は相当部分を示す。
FIG. 1 is a circuit diagram showing a telephone according to an embodiment of this invention, FIG. 2 is a timing chart for explaining its operation, and FIG. 3 is a circuit diagram showing a conventional telephone. 3 is a hook switch, 12 is a hold switch, 2
0 is a detection means (interlocking switch), 23 is a timer,
25 is an opening means (opening switch). In addition, in the figure,
The same reference numerals indicate the same or corresponding parts.
Claims (1)
を閉結し、前記フツクスイツチに並列に接続され
た保留スイツチを有して、この保留スイツチのオ
ンによつて前記回線の閉結状態を保留する電話機
において、前記フツクスイツチが再度オンしたこ
とを検知する検知手段と、前記保留スイツチがオ
ンした時にセツトされ、前記検知手段が前記フツ
クスイツチが再びオンしたことを検知した時にリ
セツトされるタイマと、前記直流ループ内に配さ
れて前記タイマがタイムアウトになると前記直流
ループを断ち、前記回線を開放する解放手段を備
えたことを特徴とする電話機。 A telephone that closes a line by a DC loop including a hook switch, has a hold switch connected in parallel to the hook switch, and holds the closed state of the line by turning on the hold switch. a detection means for detecting that the foot switch is turned on again; a timer that is set when the hold switch is turned on; and a timer that is reset when the detection means detects that the foot switch is turned on again; and a timer disposed in the DC loop. The telephone set is further provided with a release means for cutting off the DC loop and opening the line when the timer times out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP763587U JPS63117139U (en) | 1987-01-23 | 1987-01-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP763587U JPS63117139U (en) | 1987-01-23 | 1987-01-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63117139U true JPS63117139U (en) | 1988-07-28 |
Family
ID=30791272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP763587U Pending JPS63117139U (en) | 1987-01-23 | 1987-01-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63117139U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4874708A (en) * | 1971-12-29 | 1973-10-08 | ||
| JPS63151145A (en) * | 1986-12-15 | 1988-06-23 | Fujitsu Ltd | System for releasing automatic reservation of telephone system |
-
1987
- 1987-01-23 JP JP763587U patent/JPS63117139U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4874708A (en) * | 1971-12-29 | 1973-10-08 | ||
| JPS63151145A (en) * | 1986-12-15 | 1988-06-23 | Fujitsu Ltd | System for releasing automatic reservation of telephone system |