JPS6432748A - Telephone system - Google Patents

Telephone system

Info

Publication number
JPS6432748A
JPS6432748A JP62189592A JP18959287A JPS6432748A JP S6432748 A JPS6432748 A JP S6432748A JP 62189592 A JP62189592 A JP 62189592A JP 18959287 A JP18959287 A JP 18959287A JP S6432748 A JPS6432748 A JP S6432748A
Authority
JP
Japan
Prior art keywords
telephone set
extension
control circuit
party
trunk 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
JP62189592A
Other languages
Japanese (ja)
Other versions
JPH0777399B2 (en
Inventor
Kimiatsu Satou
Nobukazu Kakeya
Teruyuki Taniguchi
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.)
Sekisui Chemical Co Ltd
Original Assignee
Sekisui Chemical Co Ltd
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 Sekisui Chemical Co Ltd filed Critical Sekisui Chemical Co Ltd
Priority to JP62189592A priority Critical patent/JPH0777399B2/en
Publication of JPS6432748A publication Critical patent/JPS6432748A/en
Publication of JPH0777399B2 publication Critical patent/JPH0777399B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE:To avoid useless holding by connecting an alarm tone generator of a relevant party if a communication party is held during the talking of trunk line, extension or door phone for a communication device and other talking equipment holds the a trunk line, an extension or doorphone party. CONSTITUTION:In case of trying to attain external line call by an optional telephone set such as 5th telephone set 512 and the handset of the 5th telephone set 512 is hooked off, then an extension loop detector 28 corresponding to the 5th telephone set 515, an extension loop detector 28 corresponding to the 5th telephone set 512 sends the on-hook information to the control circuit 15. The control circuit 16 sets cross points (A, 5) of a cross point circuit 31, a relay r11 is thrown to the position of a transformer t1 then an external line communication mode. When the call signal detector 21 detects the trunk line inversion based on the off-hook, the detection information is sent to a control circuit 16 to establish local talking state.
JP62189592A 1987-07-29 1987-07-29 Telephone device Expired - Lifetime JPH0777399B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62189592A JPH0777399B2 (en) 1987-07-29 1987-07-29 Telephone device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62189592A JPH0777399B2 (en) 1987-07-29 1987-07-29 Telephone device

Publications (2)

Publication Number Publication Date
JPS6432748A true JPS6432748A (en) 1989-02-02
JPH0777399B2 JPH0777399B2 (en) 1995-08-16

Family

ID=16243894

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62189592A Expired - Lifetime JPH0777399B2 (en) 1987-07-29 1987-07-29 Telephone device

Country Status (1)

Country Link
JP (1) JPH0777399B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5726510A (en) * 1993-02-01 1998-03-10 Minebea Co., Inc. Method for driving stepping motor of multiphase hybrid type
US5747898A (en) * 1993-02-01 1998-05-05 Minebea Co., Ltd. Method for driving stepping motor of multiphase hybrid type

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5726510A (en) * 1993-02-01 1998-03-10 Minebea Co., Inc. Method for driving stepping motor of multiphase hybrid type
US5747898A (en) * 1993-02-01 1998-05-05 Minebea Co., Ltd. Method for driving stepping motor of multiphase hybrid type

Also Published As

Publication number Publication date
JPH0777399B2 (en) 1995-08-16

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