JPS5783959A - Voice conference system using time-division multiple circuit - Google Patents
Voice conference system using time-division multiple circuitInfo
- Publication number
- JPS5783959A JPS5783959A JP15812280A JP15812280A JPS5783959A JP S5783959 A JPS5783959 A JP S5783959A JP 15812280 A JP15812280 A JP 15812280A JP 15812280 A JP15812280 A JP 15812280A JP S5783959 A JPS5783959 A JP S5783959A
- Authority
- JP
- Japan
- Prior art keywords
- conference system
- time
- subscriber
- telephone
- voice
- 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.)
- Pending
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
- H04M3/561—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities by multiplexing
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
Abstract
PURPOSE:To obtain a time-division voice conference system which enables a telephone conference system by processing inside of a telephone terminal equipment. CONSTITUTION:A time slot frame assigned to each subscriber terminal of a telephone conference system which uses a looped time-division circuit consists of three parts, i.e., a synchronizing signal, control information and data; the control information has a call type display bit part indicating all-subscriber simultaneous communication and a subscriber address part for a call with a specific subscriber, and the data part includes digital data obtained by PCM-coding a voice. One frame of a signal received from a circuit is latched 12 and the data part of the latch contents is accumulated by an adder 13 and an accumulator 14. Further, the accumulated contents are latched 15 and D/A-converted 16 to realize a voice conference telephone system.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15812280A JPS5783959A (en) | 1980-11-12 | 1980-11-12 | Voice conference system using time-division multiple circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15812280A JPS5783959A (en) | 1980-11-12 | 1980-11-12 | Voice conference system using time-division multiple circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5783959A true JPS5783959A (en) | 1982-05-26 |
Family
ID=15664772
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15812280A Pending JPS5783959A (en) | 1980-11-12 | 1980-11-12 | Voice conference system using time-division multiple circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5783959A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60124198A (en) * | 1983-12-08 | 1985-07-03 | Mitsubishi Electric Corp | Voice communication system |
-
1980
- 1980-11-12 JP JP15812280A patent/JPS5783959A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60124198A (en) * | 1983-12-08 | 1985-07-03 | Mitsubishi Electric Corp | Voice communication system |
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