JPS6471367A - Digital telephone set - Google Patents

Digital telephone set

Info

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
Application number
JP22873487A
Other languages
Japanese (ja)
Inventor
Takao Makiyama
Hideo Fukazawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP22873487A priority Critical patent/JPS6471367A/en
Publication of JPS6471367A publication Critical patent/JPS6471367A/en
Pending legal-status Critical Current

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.
JP22873487A 1987-09-11 1987-09-11 Digital telephone set Pending JPS6471367A (en)

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)

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