JPS6471367A - Digital telephone set - Google Patents
Digital telephone setInfo
- Publication number
- JPS6471367A JPS6471367A JP22873487A JP22873487A JPS6471367A JP S6471367 A JPS6471367 A JP S6471367A JP 22873487 A JP22873487 A JP 22873487A JP 22873487 A JP22873487 A JP 22873487A JP S6471367 A JPS6471367 A JP S6471367A
- Authority
- JP
- Japan
- Prior art keywords
- digital
- conversion circuit
- signal
- transmission signal
- telephone set
- 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
Abstract
PURPOSE:To reduce noise in a digital telephone set using ceramics for a trans mitter by mixing an output of a digital conversion circuit to a reception signal from a line termination section in a prescribed rate as a side tone. CONSTITUTION:An analog transmission signal from a transmitter 6 is a digital transmission signal by a conversion circuit 3, fed to a digital conversion circuit 8 of the next stage and converted into a digital transmission signal of a smaller level with respect to a small signal component below the set level and the result is outputted to an exchange. On the other hand, the output digital trans mission signal of the digital conversion circuit 8 is fed to a digital mixing circuit 9, mixed to the digital reception signal in a prescribed rate from the line termination section 2 and becomes a side tone.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22873487A JPS6471367A (en) | 1987-09-11 | 1987-09-11 | Digital telephone set |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22873487A JPS6471367A (en) | 1987-09-11 | 1987-09-11 | Digital telephone set |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6471367A true JPS6471367A (en) | 1989-03-16 |
Family
ID=16880978
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP22873487A Pending JPS6471367A (en) | 1987-09-11 | 1987-09-11 | Digital telephone set |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6471367A (en) |
-
1987
- 1987-09-11 JP JP22873487A patent/JPS6471367A/en active Pending
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