JPS528706A - Telephone circuit - Google Patents

Telephone circuit

Info

Publication number
JPS528706A
JPS528706A JP8427975A JP8427975A JPS528706A JP S528706 A JPS528706 A JP S528706A JP 8427975 A JP8427975 A JP 8427975A JP 8427975 A JP8427975 A JP 8427975A JP S528706 A JPS528706 A JP S528706A
Authority
JP
Japan
Prior art keywords
telephone circuit
receiving
tone
control circuit
level
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
Application number
JP8427975A
Other languages
Japanese (ja)
Other versions
JPS5420363B2 (en
Inventor
Yasuhiro Ono
Takayuki Yamazaki
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.)
Iwatsu Electric Co Ltd
Iwasaki Tsushinki KK
Original Assignee
Iwatsu Electric Co Ltd
Iwasaki Tsushinki KK
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 Iwatsu Electric Co Ltd, Iwasaki Tsushinki KK filed Critical Iwatsu Electric Co Ltd
Priority to JP8427975A priority Critical patent/JPS528706A/en
Publication of JPS528706A publication Critical patent/JPS528706A/en
Publication of JPS5420363B2 publication Critical patent/JPS5420363B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/58—Anti-side-tone circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)

Abstract

PURPOSE:In order to automatically improve the receiving-level side-tone attenuation quantity, by means of installing receiving and side-tone level control circuit which is made of non-linear element.
JP8427975A 1975-07-09 1975-07-09 Telephone circuit Granted JPS528706A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8427975A JPS528706A (en) 1975-07-09 1975-07-09 Telephone circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8427975A JPS528706A (en) 1975-07-09 1975-07-09 Telephone circuit

Publications (2)

Publication Number Publication Date
JPS528706A true JPS528706A (en) 1977-01-22
JPS5420363B2 JPS5420363B2 (en) 1979-07-23

Family

ID=13826001

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8427975A Granted JPS528706A (en) 1975-07-09 1975-07-09 Telephone circuit

Country Status (1)

Country Link
JP (1) JPS528706A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49106360A (en) * 1973-01-18 1974-10-08

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49106360A (en) * 1973-01-18 1974-10-08

Also Published As

Publication number Publication date
JPS5420363B2 (en) 1979-07-23

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