JPH0243054U - - Google Patents

Info

Publication number
JPH0243054U
JPH0243054U JP12090988U JP12090988U JPH0243054U JP H0243054 U JPH0243054 U JP H0243054U JP 12090988 U JP12090988 U JP 12090988U JP 12090988 U JP12090988 U JP 12090988U JP H0243054 U JPH0243054 U JP H0243054U
Authority
JP
Japan
Prior art keywords
line
telephones
telephone
connection
office line
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
JP12090988U
Other languages
English (en)
Other versions
JPH0728751Y2 (ja
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 JP1988120909U priority Critical patent/JPH0728751Y2/ja
Publication of JPH0243054U publication Critical patent/JPH0243054U/ja
Application granted granted Critical
Publication of JPH0728751Y2 publication Critical patent/JPH0728751Y2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Description

【図面の簡単な説明】
第１図は本考案の一実施例を示す図、第２図は
フローチヤート、第３図は従来例を示す図である
。 ２２……保留リレー、２４，２５，２６……外
線／内線切換リレー、２７，２８……検出回路、
３６……通話マトリツクス回路、３７……呼出音
発生回路、３８……レベル検出回路、３９……演
算制御手段（接続手段）、４０……リレードライ
バー回路、４１……第１呼出スイツチ、４２……
第２呼出スイツチ、４３……３者通話用スイツチ
、４６……電流供給回路。

Claims (1)

  1. 【実用新案登録請求の範囲】 (1) 単一局線に対して複数の電話機を接続でき
    ると共に、該電話機を局線と接続する外線側接続
    と前記電話機を相互に接続する内線側接続のいず
    れか一方の接続状態に切換える外線／内線切換手
    段を備え、前記電話機相互の通話機能及び前記電
    話機と局線との通話機能を有する電話装置におい
    て、３者通話指令手段と、この手段の指令に基づ
    き単一局線に対して複数の電話機を同時に接続す
    る接続手段とを備えたことを特徴とする電話装置
    。 (2) 接続手段により単一局線に対して複数の電
    話機が同時に接続されたとき、電話機に電流を供
    給する電流供給回路を設けたことを特徴とする請
    求項１記載の電話装置。
JP1988120909U 1988-09-14 1988-09-14 電話装置 Expired - Fee Related JPH0728751Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1988120909U JPH0728751Y2 (ja) 1988-09-14 1988-09-14 電話装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988120909U JPH0728751Y2 (ja) 1988-09-14 1988-09-14 電話装置

Publications (2)

Publication Number Publication Date
JPH0243054U true JPH0243054U (ja) 1990-03-26
JPH0728751Y2 JPH0728751Y2 (ja) 1995-06-28

Family

ID=31367443

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988120909U Expired - Fee Related JPH0728751Y2 (ja) 1988-09-14 1988-09-14 電話装置

Country Status (1)

Country Link
JP (1) JPH0728751Y2 (ja)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51144108A (en) * 1975-05-23 1976-12-10 Western Electric Co Circuit for connecting two parts of communication channel
JPS58144949U (ja) * 1982-03-25 1983-09-29 日本電気株式会社 自動交換装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51144108A (en) * 1975-05-23 1976-12-10 Western Electric Co Circuit for connecting two parts of communication channel
JPS58144949U (ja) * 1982-03-25 1983-09-29 日本電気株式会社 自動交換装置

Also Published As

Publication number Publication date
JPH0728751Y2 (ja) 1995-06-28

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees