JPH02137151U - - Google Patents
Info
- Publication number
- JPH02137151U JPH02137151U JP4755689U JP4755689U JPH02137151U JP H02137151 U JPH02137151 U JP H02137151U JP 4755689 U JP4755689 U JP 4755689U JP 4755689 U JP4755689 U JP 4755689U JP H02137151 U JPH02137151 U JP H02137151U
- Authority
- JP
- Japan
- Prior art keywords
- ringer
- voltage
- exchange
- bell
- sending part
- 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
- 238000010586 diagram Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
Landscapes
- Devices For Supply Of Signal Current (AREA)
Description
第１図はこの考案の一実施例による交換機を示
すブロツク図、第２図はこの考案において、動作
時の、リングトリツプ検出端子の電位の変化を示
す図、第３図は従来の交換機を示すブロツク図で
ある。
図において、３は−２４Ｖ電源、４は−２４Ｖ
電源に重畳されたリンガー信号源、９は−４８Ｖ
系アナログ内線電話機８へリンガーを送出するリ
レー、１５はリングトリツプの検出レベル変換部
、１３はリングトリツプ検出端子、１４は−４８
Ｖ給電のＳＬＩＣ ＩＣである。なお、図中同一
符号は同一、又は相当部分を示す。
Fig. 1 is a block diagram showing a switch according to an embodiment of this invention, Fig. 2 is a diagram showing changes in the potential of the ring trip detection terminal during operation in this invention, and Fig. 3 is a block diagram showing a conventional switch. It is a diagram. In the figure, 3 is -24V power supply, 4 is -24V power supply
Ringer signal source superimposed on power supply, 9 is -48V
15 is a ring trip detection level converter; 13 is a ring trip detection terminal; 14 is a -48
It is a V-powered SLIC IC. Note that the same reference numerals in the figures indicate the same or equivalent parts.
Claims (1)
て、異なる２種類の電圧Ｖ１，Ｖ２（Ｖ１＞Ｖ２
）を給電し、リンガー送出時、Ｖ２系のリンガー
送出部をＶ１系のリンガー送出部にて共用させる
ことで、着信時のベル鳴動時は電圧Ｖ１に、又非
鳴動時は電圧Ｖ２にバイアスすることを特徴とす
る交換機。 In an exchange that supplies DC power to an analog telephone line, two different voltages V 1 and V 2 (V 1 > V 2
), and when sending out a ringer, by sharing the ringer sending part of the V2 system with the ringer sending part of the V1 system, the voltage is set to V1 when the bell rings at the time of an incoming call, and the voltage is set to V when the bell is not ringing. An exchange characterized by being biased toward 2 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4755689U JPH02137151U (en) | 1989-04-20 | 1989-04-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4755689U JPH02137151U (en) | 1989-04-20 | 1989-04-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02137151U true JPH02137151U (en) | 1990-11-15 |
Family
ID=31563588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4755689U Pending JPH02137151U (en) | 1989-04-20 | 1989-04-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02137151U (en) |
-
1989
- 1989-04-20 JP JP4755689U patent/JPH02137151U/ja active Pending
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