JPS56156059A - Conference telephone system of conference ground number extension type - Google Patents
Conference telephone system of conference ground number extension typeInfo
- Publication number
- JPS56156059A JPS56156059A JP5896180A JP5896180A JPS56156059A JP S56156059 A JPS56156059 A JP S56156059A JP 5896180 A JP5896180 A JP 5896180A JP 5896180 A JP5896180 A JP 5896180A JP S56156059 A JPS56156059 A JP S56156059A
- Authority
- JP
- Japan
- Prior art keywords
- subscriber
- conference
- telephone system
- ground number
- extension type
- 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
- H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
Abstract
PURPOSE:To realize a conference telephone system of infinite ground number, by connecting subscriber terminals other than an incoming terminal so as to put under them an outgoing state preserving them in the incoming answering state and then increasing successively the number of subscribers of connection. CONSTITUTION:The subscriber A who proposes an opening of conference calls an adjacent subscriber B. For a subscriber who receives the conference telephone service, the conference trunk is connected to the two subscriber terminals of switchboard subscriber, and a subscriber telephone set is connected to a subscriber terminal that receives an interface from the conference trunk. The called subscriber B answers with ringing of a ball. After answering, the subscriber B is connected to the subscriber C to participate said C to the conference by hooking of the called subscriber B. In the same way, the subscriber D is connected by a connection of outgoing of the subscriber C. In such processes, the conference participants are connected successively to allow infinite extension of subscribers in a conference telephone system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5896180A JPS56156059A (en) | 1980-05-02 | 1980-05-02 | Conference telephone system of conference ground number extension type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5896180A JPS56156059A (en) | 1980-05-02 | 1980-05-02 | Conference telephone system of conference ground number extension type |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56156059A true JPS56156059A (en) | 1981-12-02 |
| JPS6130463B2 JPS6130463B2 (en) | 1986-07-14 |
Family
ID=13099431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5896180A Granted JPS56156059A (en) | 1980-05-02 | 1980-05-02 | Conference telephone system of conference ground number extension type |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56156059A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6236954A (en) * | 1985-08-09 | 1987-02-17 | Nippon Telegr & Teleph Corp <Ntt> | Conference talking system |
-
1980
- 1980-05-02 JP JP5896180A patent/JPS56156059A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6236954A (en) * | 1985-08-09 | 1987-02-17 | Nippon Telegr & Teleph Corp <Ntt> | Conference talking system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6130463B2 (en) | 1986-07-14 |
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