JPS52143703A - Telephone circuit - Google Patents

Telephone circuit

Info

Publication number
JPS52143703A
JPS52143703A JP6089576A JP6089576A JPS52143703A JP S52143703 A JPS52143703 A JP S52143703A JP 6089576 A JP6089576 A JP 6089576A JP 6089576 A JP6089576 A JP 6089576A JP S52143703 A JPS52143703 A JP S52143703A
Authority
JP
Japan
Prior art keywords
telephone circuit
transmission
sensitivity adjustment
reception
commonly
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
JP6089576A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5431931B2 (OSRAM
Inventor
Isao Kawashima
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.)
NTT Inc
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP6089576A priority Critical patent/JPS52143703A/ja
Publication of JPS52143703A publication Critical patent/JPS52143703A/ja
Publication of JPS5431931B2 publication Critical patent/JPS5431931B2/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
    • H04M1/738—Interface circuits for coupling substations to external telephone lines
    • H04M1/76—Compensating for differences in line impedance

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
JP6089576A 1976-05-25 1976-05-25 Telephone circuit Granted JPS52143703A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6089576A JPS52143703A (en) 1976-05-25 1976-05-25 Telephone circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6089576A JPS52143703A (en) 1976-05-25 1976-05-25 Telephone circuit

Publications (2)

Publication Number Publication Date
JPS52143703A true JPS52143703A (en) 1977-11-30
JPS5431931B2 JPS5431931B2 (OSRAM) 1979-10-11

Family

ID=13155536

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6089576A Granted JPS52143703A (en) 1976-05-25 1976-05-25 Telephone circuit

Country Status (1)

Country Link
JP (1) JPS52143703A (OSRAM)

Also Published As

Publication number Publication date
JPS5431931B2 (OSRAM) 1979-10-11

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