JPS6432748A - Telephone system - Google Patents
Telephone systemInfo
- 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
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.
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)
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 |
-
1987
- 1987-07-29 JP JP62189592A patent/JPH0777399B2/en not_active Expired - Lifetime
Cited By (2)
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 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
SE9602756D0 (en) | Procedure for performing automatic dialing | |
CA1049671A (en) | Key telephone system intercom arrangement | |
GB1352212A (en) | Remote control telephone apparatus | |
JPS6432748A (en) | Telephone system | |
JPH0738743B2 (en) | Cordless telephone equipment | |
KR19990086591A (en) | Interphone and external telephone automatic connection device and method | |
JP3232640B2 (en) | Telephone exchange | |
JP2826105B2 (en) | Line switching device | |
JP2799919B2 (en) | Cordless telephone equipment | |
JP2609177B2 (en) | Cordless button telephone equipment | |
KR900005748A (en) | Method and apparatus for calling with interphone through public telephone network in absence | |
JPH0628868Y2 (en) | Doorphone calling device in a home exchange | |
JPH0122797B2 (en) | ||
KR960010326Y1 (en) | Branch system of an inter-phone | |
JPH03158057A (en) | Telephone set | |
JP2561456B2 (en) | Button telephone device | |
JP2709180B2 (en) | Key telephone equipment | |
KR930015582A (en) | Method and device for switching call of branch phone | |
JPS6359045A (en) | Telephone line terminal equipment | |
JPH01852A (en) | Alarm system using telephone equipment | |
JPS6427351A (en) | Telephone system with interruption function | |
JPH04230149A (en) | Cordless telephone set | |
JPH0748764B2 (en) | Line terminal equipment | |
JPH04179352A (en) | Codeless telephone set | |
JPS6442981A (en) | Facsimile equipment |