JPS6352368U - - Google Patents

Info

Publication number
JPS6352368U
JPS6352368U JP14686186U JP14686186U JPS6352368U JP S6352368 U JPS6352368 U JP S6352368U JP 14686186 U JP14686186 U JP 14686186U JP 14686186 U JP14686186 U JP 14686186U JP S6352368 U JPS6352368 U JP S6352368U
Authority
JP
Japan
Prior art keywords
office line
circuit
central office
communication path
switching
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
JP14686186U
Other languages
Japanese (ja)
Other versions
JPH0332149Y2 (en
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 filed Critical
Priority to JP14686186U priority Critical patent/JPH0332149Y2/ja
Publication of JPS6352368U publication Critical patent/JPS6352368U/ja
Application granted granted Critical
Publication of JPH0332149Y2 publication Critical patent/JPH0332149Y2/ja
Expired legal-status Critical Current

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  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Monitoring And Testing Of Exchanges (AREA)

Description

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

第１図は本考案の実施例を示す回路図、第２図
は従来例の回路図である。 （主な記号）Ｃ１……コンデンサ、ＣＯＣ……
局線回路、ＤＢ……ダイオードブリツジ、ＬＣ…
…内線回路、ＰＦ……直通切替リレー、ｐｆ１，
ｐｆ２，ｐｆ３，ｐｆ４……リレーＰＦの接点、
ＰＦＴ……局線直通切替回路、ＲＣ……１６ＨＺ
呼出信号検出回路、ＲＤ……リレー駆動回路、Ｔ
Ｃ……局線回路ＣＯＣの通話路部、ＴＥＬ……内
線電話機、ＴＥＬ―Ｐ……内線電話機。 FIG. 1 is a circuit diagram showing an embodiment of the present invention, and FIG. 2 is a circuit diagram of a conventional example. (Main symbols) C 1 ... Capacitor, COC...
Office line circuit, DB...diode bridge, LC...
...Extension circuit, PF...Direct switching relay, pf 1 ,
pf 2 , pf 3 , pf 4 ... contacts of relay PF,
PFT...Station line direct switching circuit, RC...16HZ
Calling signal detection circuit, RD...Relay drive circuit, T
C...Communication line section of the office line circuit COC, TEL...extension telephone, TEL-P...extension telephone.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 局線回路の通話路に無極性化のためのダイオー
ドを有し、通話路の両線を切替接点で平常時は内
線回路側に、障害時は局線側に内線電話機を切替
える構内電話交換装置において、局線側と内線回
路側への切替え回路の局線側経路を局線通話路か
ら直接分岐するようにしたことを特徴とする局線
直通切替回路。 A private telephone switching device that has a diode for non-polarization in the communication path of the office line circuit, and uses switching contacts to switch both lines of the communication path to the extension circuit side in normal times and to the office line side in the event of a failure. A central office line direct switching circuit characterized in that the central office line side route of the switching circuit to the central office line side and the internal line circuit side is directly branched from the central office line communication path.
JP14686186U 1986-09-25 1986-09-25 Expired JPH0332149Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14686186U JPH0332149Y2 (en) 1986-09-25 1986-09-25

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14686186U JPH0332149Y2 (en) 1986-09-25 1986-09-25

Publications (2)

Publication Number Publication Date
JPS6352368U true JPS6352368U (en) 1988-04-08
JPH0332149Y2 JPH0332149Y2 (en) 1991-07-08

Family

ID=31059705

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14686186U Expired JPH0332149Y2 (en) 1986-09-25 1986-09-25

Country Status (1)

Country Link
JP (1) JPH0332149Y2 (en)

Also Published As

Publication number Publication date
JPH0332149Y2 (en) 1991-07-08

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