JPS6421546U - - Google Patents
Info
- Publication number
- JPS6421546U JPS6421546U JP11532887U JP11532887U JPS6421546U JP S6421546 U JPS6421546 U JP S6421546U JP 11532887 U JP11532887 U JP 11532887U JP 11532887 U JP11532887 U JP 11532887U JP S6421546 U JPS6421546 U JP S6421546U
- Authority
- JP
- Japan
- Prior art keywords
- call
- telephone
- power outage
- control section
- detection means
- 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 5
- 230000001276 controlling effect Effects 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Description
第１図は本考案の一実施例に於ける装置の要部
ブロツク図、第２図は従来一般に用いられている
此種装置の要部ブロツク図である。
８……端末電話機、９……通話検出手段、１０
ａ，１０ｂ……電話回線、１２……制御部、１３
……切換回路、１４……電源供給回路、１５……
停電検出回路、１６……保持回路。
FIG. 1 is a block diagram of the main parts of an apparatus according to an embodiment of the present invention, and FIG. 2 is a block diagram of the main parts of a conventionally commonly used apparatus of this kind. 8...Terminal telephone, 9...Call detection means, 10
a, 10b...Telephone line, 12...Control unit, 13
...Switching circuit, 14...Power supply circuit, 15...
Power failure detection circuit, 16...holding circuit.
Claims (1)
と、該制御部を駆動させるための電源部と、停電
時前記端末電話機と電話回線とを前記制御部を介
さず直接させるための切換手段と、停電を検出し
て前記切換手段を駆動させるための停電検出手段
とを備えたシステム電話装置に於いて、 端末電話機の動作状態を検出する通話検出手段
と、この通話検出手段からの信号に基づいて前記
切換手段の動作を規制する保持手段とを設け、 停電時に制御部を介さず通話がなされている場
合には通話途中で停電復帰しても通話が終了する
までその状態を保持するようにしたことを特徴と
するシステム電話装置。[Claims for Utility Model Registration] A terminal telephone, a control section for controlling the terminal telephone, a power supply section for driving the control section, and a system for connecting the terminal telephone and a telephone line without going through the control section during a power outage. In a system telephone device equipped with a switching means for direct switching, and a power outage detection means for detecting a power outage and driving the switching means, the system telephone device includes: a call detection means for detecting the operating state of the terminal telephone; and a holding means for regulating the operation of the switching means based on a signal from the detection means, so that when a call is being made without going through the control unit during a power outage, even if the power is restored during the call, the holding means is provided until the call is terminated. A system telephone device characterized in that the state is maintained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11532887U JPS6421546U (en) | 1987-07-28 | 1987-07-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11532887U JPS6421546U (en) | 1987-07-28 | 1987-07-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6421546U true JPS6421546U (en) | 1989-02-02 |
Family
ID=31356888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11532887U Pending JPS6421546U (en) | 1987-07-28 | 1987-07-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6421546U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04137847A (en) * | 1990-09-28 | 1992-05-12 | Tamura Electric Works Ltd | Communication management equipment |
-
1987
- 1987-07-28 JP JP11532887U patent/JPS6421546U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04137847A (en) * | 1990-09-28 | 1992-05-12 | Tamura Electric Works Ltd | Communication management equipment |
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