JPS6059659U - Telephone line switching circuit - Google Patents

Telephone line switching circuit

Info

Publication number
JPS6059659U
JPS6059659U JP14953383U JP14953383U JPS6059659U JP S6059659 U JPS6059659 U JP S6059659U JP 14953383 U JP14953383 U JP 14953383U JP 14953383 U JP14953383 U JP 14953383U JP S6059659 U JPS6059659 U JP S6059659U
Authority
JP
Japan
Prior art keywords
line
switching circuit
self
telephone line
diode
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
Application number
JP14953383U
Other languages
Japanese (ja)
Other versions
JPS643246Y2 (en
Inventor
仲田　淳嗣
江原　正光
斉藤　安彦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NTT Inc
Original Assignee
Nippon Telegraph and Telephone Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP14953383U priority Critical patent/JPS6059659U/en
Publication of JPS6059659U publication Critical patent/JPS6059659U/en
Application granted granted Critical
Publication of JPS643246Y2 publication Critical patent/JPS643246Y2/ja
Granted legal-status Critical Current

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  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来の電話機の回線切換回路図、第２図は本考
案による電話機の回線切換回路の一実施例図である。 置Ｉ〜置Ｎ・・・電話機、ＴＣ・・・通話回路、Ｂ・・
・継電器、Ａ・・・自己保持形継電器、［）１１Ｄ２．
　Ｄ３．　Ｄ、・・・ダイオード、Ｈ８・・・フックス
イッチ、ｂｌ、　ｂ２．、、継電器Ｂの接点、ａｏ、　
ａ’、　ａ２、ａ３・・・自己保持形継電器Ａの接点、
Ｃ・・・コンデンサ、１，２・・・常用回線、３，４・
・・予備回線。 第１図 −第２図FIG. 1 is a diagram of a conventional telephone line switching circuit, and FIG. 2 is an embodiment of the telephone line switching circuit according to the present invention. Place I to Place N...Telephone, TC...Telephone circuit, B...
・Relay, A...Self-holding relay, [)11D2.
D3. D, . . . diode, H8 . . . hook switch, bl, b2. ,, contact point of relay B, ao,
a', a2, a3... contacts of self-holding relay A,
C... Capacitor, 1, 2... Regular line, 3, 4...
...Backup line. Figure 1-Figure 2

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ？対の電話回線に複数の電話機を自己保持形継電器の接
点を介し連接接続した電話機の回線切換回路において、
自己保持形継電器とコンデンサとを並列接続したものと
第１のダイオードとの各々一端を通話回路に接続し、前
記自己保持形継電器とコンデンサとの他端は自己保持形
継電器の接点を介しどちらか一方が常用回線の一方２ま
たは予備回線の一方４に接続され、第１のダイオードの
一端が接続された側の通話回路と常用回線の一方２また
は予備回線の一方４との間に、第１のダイオードとは極
性を逆にした第２のダイオードを接続し、通話回路と、
前記電話回線側とループを構成する常用回線の他方１ま
たに予備回線の他方３との間に、フックスイッチや挿入
したことを特徴とする電話機の回線切換回路。? In a telephone line switching circuit in which multiple telephones are connected to paired telephone lines via the contacts of a self-holding relay,
One end of each of the self-holding relay and the capacitor connected in parallel and the first diode is connected to the communication circuit, and the other ends of the self-holding relay and the capacitor are connected to either one through the contact of the self-holding relay. One end of the first diode is connected to one side 2 of the regular line 2 or one side 4 of the protection line, and a first Connect a second diode with the polarity opposite to that of the diode, and connect it to the communication circuit.
A telephone line switching circuit characterized in that a hook switch or the like is inserted between the telephone line side and the other line 1 of the regular line or the other line 3 of the protection line constituting the loop.
JP14953383U 1983-09-29 1983-09-29 Telephone line switching circuit Granted JPS6059659U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14953383U JPS6059659U (en) 1983-09-29 1983-09-29 Telephone line switching circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14953383U JPS6059659U (en) 1983-09-29 1983-09-29 Telephone line switching circuit

Publications (2)

Publication Number Publication Date
JPS6059659U true JPS6059659U (en) 1985-04-25
JPS643246Y2 JPS643246Y2 (en) 1989-01-27

Family

ID=30331912

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14953383U Granted JPS6059659U (en) 1983-09-29 1983-09-29 Telephone line switching circuit

Country Status (1)

Country Link
JP (1) JPS6059659U (en)

Also Published As

Publication number Publication date
JPS643246Y2 (en) 1989-01-27

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