JPS5630353A - Communication system with engaged or absent subscriber - Google Patents
Communication system with engaged or absent subscriberInfo
- Publication number
- JPS5630353A JPS5630353A JP10640379A JP10640379A JPS5630353A JP S5630353 A JPS5630353 A JP S5630353A JP 10640379 A JP10640379 A JP 10640379A JP 10640379 A JP10640379 A JP 10640379A JP S5630353 A JPS5630353 A JP S5630353A
- Authority
- JP
- Japan
- Prior art keywords
- subscriber
- terminal
- picture
- engaged
- absence
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/42—Systems providing special services or facilities to subscribers
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Facsimiles In General (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
PURPOSE:To improve services to subscribers, to reduce ineffective traffic and to improve a call completion rate by receiving information on an originating subscriber by a picture terminal through the operation of a terminating-subscriber's control circuit. CONSTITUTION:When subscriber C is to make a telephone call to B, who is engaged with subscriber A, a connection between telephone terminal 1 of subscriber C and picture terminal 2 of subscriber B is made. At this time, answering circuit 7 is actuated by control circuit 8 of subscriber B to inform subscriber C of whether communication is possible or not through the picture terminal. Subscriber C changes the terminal over to terminal 2 to sent a message. When subscriber B is in absence, it is made possible to obtain the busy state of terminal 1 previously or the connection state of terminal 2 a certain time later. Consequently, the originating subscriber can know the absence of subscriber B by incoming to terminal 2 and then send a fixed message.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10640379A JPS5630353A (en) | 1979-08-21 | 1979-08-21 | Communication system with engaged or absent subscriber |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10640379A JPS5630353A (en) | 1979-08-21 | 1979-08-21 | Communication system with engaged or absent subscriber |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5630353A true JPS5630353A (en) | 1981-03-26 |
JPS6134708B2 JPS6134708B2 (en) | 1986-08-08 |
Family
ID=14432710
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10640379A Granted JPS5630353A (en) | 1979-08-21 | 1979-08-21 | Communication system with engaged or absent subscriber |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5630353A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5859662A (en) * | 1981-10-06 | 1983-04-08 | Oki Electric Ind Co Ltd | Telephone service start and stop system |
JPS58198952A (en) * | 1982-05-17 | 1983-11-19 | Nippon Telegr & Teleph Corp <Ntt> | Signal system for in-communication service |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01178056U (en) * | 1988-06-01 | 1989-12-20 |
-
1979
- 1979-08-21 JP JP10640379A patent/JPS5630353A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5859662A (en) * | 1981-10-06 | 1983-04-08 | Oki Electric Ind Co Ltd | Telephone service start and stop system |
JPH0335861B2 (en) * | 1981-10-06 | 1991-05-29 | Oki Denki Kogyo Kk | |
JPS58198952A (en) * | 1982-05-17 | 1983-11-19 | Nippon Telegr & Teleph Corp <Ntt> | Signal system for in-communication service |
Also Published As
Publication number | Publication date |
---|---|
JPS6134708B2 (en) | 1986-08-08 |
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