JPS53147407A - Conference telephone set - Google Patents
Conference telephone setInfo
- Publication number
- JPS53147407A JPS53147407A JP6232377A JP6232377A JPS53147407A JP S53147407 A JPS53147407 A JP S53147407A JP 6232377 A JP6232377 A JP 6232377A JP 6232377 A JP6232377 A JP 6232377A JP S53147407 A JPS53147407 A JP S53147407A
- Authority
- JP
- Japan
- Prior art keywords
- telephone set
- conference telephone
- conference
- circuit
- summed
- 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)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP52062323A JPS586424B2 (ja) | 1977-05-27 | 1977-05-27 | 会議電話装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP52062323A JPS586424B2 (ja) | 1977-05-27 | 1977-05-27 | 会議電話装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS53147407A true JPS53147407A (en) | 1978-12-22 |
JPS586424B2 JPS586424B2 (ja) | 1983-02-04 |
Family
ID=13196808
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP52062323A Expired JPS586424B2 (ja) | 1977-05-27 | 1977-05-27 | 会議電話装置 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS586424B2 (ja) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4826305A (ja) * | 1971-08-07 | 1973-04-06 | ||
JPS4830303A (ja) * | 1971-08-20 | 1973-04-21 | ||
JPS4884508A (ja) * | 1972-02-12 | 1973-11-09 |
-
1977
- 1977-05-27 JP JP52062323A patent/JPS586424B2/ja not_active Expired
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4826305A (ja) * | 1971-08-07 | 1973-04-06 | ||
JPS4830303A (ja) * | 1971-08-20 | 1973-04-21 | ||
JPS4884508A (ja) * | 1972-02-12 | 1973-11-09 |
Also Published As
Publication number | Publication date |
---|---|
JPS586424B2 (ja) | 1983-02-04 |
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