JPS5444405A - Simultaneous loudspeaker telephone system - Google Patents
Simultaneous loudspeaker telephone systemInfo
- Publication number
- JPS5444405A JPS5444405A JP11112877A JP11112877A JPS5444405A JP S5444405 A JPS5444405 A JP S5444405A JP 11112877 A JP11112877 A JP 11112877A JP 11112877 A JP11112877 A JP 11112877A JP S5444405 A JPS5444405 A JP S5444405A
- Authority
- JP
- Japan
- Prior art keywords
- simultaneous
- telephone system
- loudspeaker telephone
- loudspeaker
- telephone
- 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
Landscapes
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11112877A JPS5444405A (en) | 1977-09-14 | 1977-09-14 | Simultaneous loudspeaker telephone system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11112877A JPS5444405A (en) | 1977-09-14 | 1977-09-14 | Simultaneous loudspeaker telephone system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5444405A true JPS5444405A (en) | 1979-04-07 |
Family
ID=14553144
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11112877A Pending JPS5444405A (en) | 1977-09-14 | 1977-09-14 | Simultaneous loudspeaker telephone system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5444405A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5890895A (en) * | 1981-11-24 | 1983-05-30 | Nec Corp | Monitor system for outgoing and incoming trunk polarity for automatic exchange |
-
1977
- 1977-09-14 JP JP11112877A patent/JPS5444405A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5890895A (en) * | 1981-11-24 | 1983-05-30 | Nec Corp | Monitor system for outgoing and incoming trunk polarity for automatic exchange |
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