JPS55107373A - Meeting communication system - Google Patents
Meeting communication systemInfo
- Publication number
- JPS55107373A JPS55107373A JP1445679A JP1445679A JPS55107373A JP S55107373 A JPS55107373 A JP S55107373A JP 1445679 A JP1445679 A JP 1445679A JP 1445679 A JP1445679 A JP 1445679A JP S55107373 A JPS55107373 A JP S55107373A
- Authority
- JP
- Japan
- Prior art keywords
- exchanger
- line
- output
- terminal
- audio
- 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 enable to decrease the number of required relay lines, by mixing the audio signal incoming via the relay line with the audio signal from the telephone set in direct allocation to the exchanger at the audio mixer and sending the output to the next stage exchanger. CONSTITUTION:The audio signal mixture fed from the pre-stage exchanger, e.g., 1A on the relay line 11 is given to the 4-line input terminal 9 and the 4-line output line 10 via the next stage exchanger, e.g., the switch circuit of 1B. Further, when the signal on the terminal 12 of the audio mixer 5 of the exchanger B is the mixture of audio from the all conference attended telephone sets 4a...4j, the selector switch 14 is selected to the terminal 12 to send the mixed output to the pre-stage exchanger 1A and the conference attended telephone set in the station. If not, selection is made to the terminal 15 and output is fed to the next stage exchanger, e.g., 1C via the switch circuit network. Thus, the number of required relay lines can be decreased.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1445679A JPS5925505B2 (en) | 1979-02-09 | 1979-02-09 | Conference call method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1445679A JPS5925505B2 (en) | 1979-02-09 | 1979-02-09 | Conference call method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55107373A true JPS55107373A (en) | 1980-08-18 |
JPS5925505B2 JPS5925505B2 (en) | 1984-06-18 |
Family
ID=11861536
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1445679A Expired JPS5925505B2 (en) | 1979-02-09 | 1979-02-09 | Conference call method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5925505B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57111166A (en) * | 1980-12-26 | 1982-07-10 | Fujitsu Ltd | Add-on connection system |
US4605823A (en) * | 1982-11-12 | 1986-08-12 | Fujitsu Limited | Phone conference system |
-
1979
- 1979-02-09 JP JP1445679A patent/JPS5925505B2/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57111166A (en) * | 1980-12-26 | 1982-07-10 | Fujitsu Ltd | Add-on connection system |
US4605823A (en) * | 1982-11-12 | 1986-08-12 | Fujitsu Limited | Phone conference system |
Also Published As
Publication number | Publication date |
---|---|
JPS5925505B2 (en) | 1984-06-18 |
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