JPH02130183U - - Google Patents
Info
- Publication number
- JPH02130183U JPH02130183U JP15283488U JP15283488U JPH02130183U JP H02130183 U JPH02130183 U JP H02130183U JP 15283488 U JP15283488 U JP 15283488U JP 15283488 U JP15283488 U JP 15283488U JP H02130183 U JPH02130183 U JP H02130183U
- Authority
- JP
- Japan
- Prior art keywords
- telephone
- circuit
- connection terminal
- switch
- determination
- 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
- 238000001514 detection method Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Monitoring And Testing Of Exchanges (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Description
第１図は、この考案の一実施例のブロツク図、
第２図は、第１図例の動作説明のためのタイムチ
ヤート、第３図は、この考案の他の例のブロツク
図、第４図は、第３図例の動作説明のためのタイ
ムチヤートである。
１……給電回路、２Ａ，２Ｂ……接続端子、３
……電話機、４，５……スイツチ回路、６……電
話機の接続検出手段、７……スイツチ制御回路、
８，１０……電話機接続有無の判定回路、９……
表示手段。
FIG. 1 is a block diagram of an embodiment of this invention.
2 is a time chart for explaining the operation of the example in FIG. 1, FIG. 3 is a block diagram of another example of this invention, and FIG. 4 is a time chart for explaining the operation of the example in FIG. It is. 1...Power supply circuit, 2A, 2B...Connection terminal, 3
...Telephone, 4, 5...Switch circuit, 6...Telephone connection detection means, 7...Switch control circuit,
8, 10... Circuit for determining whether or not a telephone is connected, 9...
Display means.
Claims (1)
を行なう給電回路との間に設けられる第１のスイ
ツチ回路と、 上記接続端子に電話機が接続されたとき、この
電話機に並列に接続される、第２のスイツチ回路
と上記電話機が接続端子に接続されているかどう
かを検出するための検出素子を備える検出手段と
の直列回路と、 上記第１及び第２のスイツチ回路をスイツチン
グ制御するスイツチ制御回路と、 上記スイツチ制御回路に電話機接続有無判別開
始信号を供給する判別開始手段と、 上記検出手段の出力を受け、電話機が接続され
ているかどうかの判定を行なう判定手段と、 この判定手段の出力を受け、その判定結果を報
知する報知手段とからなる電話機接続有無判別装
置。[Claims for Utility Model Registration] A first switch circuit provided between a connection terminal to which a telephone is connected and a power supply circuit that supplies power to the telephone; and when a telephone is connected to the connection terminal, the telephone a series circuit of a second switch circuit and a detection means including a detection element for detecting whether or not the telephone is connected to a connection terminal, the first and second switch circuits being connected in parallel to each other; a switch control circuit for controlling switching; a determination start means for supplying a start signal for determining whether or not a telephone is connected to the switch control circuit; and a determination means for receiving the output of the detection means and determining whether or not a telephone is connected. , and notification means for receiving the output of the determination means and notifying the determination result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15283488U JPH0416551Y2 (en) | 1988-11-24 | 1988-11-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15283488U JPH0416551Y2 (en) | 1988-11-24 | 1988-11-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02130183U true JPH02130183U (en) | 1990-10-26 |
| JPH0416551Y2 JPH0416551Y2 (en) | 1992-04-14 |
Family
ID=31699073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15283488U Expired JPH0416551Y2 (en) | 1988-11-24 | 1988-11-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0416551Y2 (en) |
-
1988
- 1988-11-24 JP JP15283488U patent/JPH0416551Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0416551Y2 (en) | 1992-04-14 |