JPS5450204A - Speech path line - Google Patents

Speech path line

Info

Publication number
JPS5450204A
JPS5450204A JP11563977A JP11563977A JPS5450204A JP S5450204 A JPS5450204 A JP S5450204A JP 11563977 A JP11563977 A JP 11563977A JP 11563977 A JP11563977 A JP 11563977A JP S5450204 A JPS5450204 A JP S5450204A
Authority
JP
Japan
Prior art keywords
subjected
terminal
gain
level
signal
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
JP11563977A
Other languages
Japanese (ja)
Inventor
Izumi Kawakami
Tomokazu Komazaki
Toshio Shinozaki
Mitsuo Teramoto
Yukio Imai
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.)
Oki Electric Industry Co Ltd
Original Assignee
Oki Electric Industry Co 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 Oki Electric Industry Co Ltd filed Critical Oki Electric Industry Co Ltd
Priority to JP11563977A priority Critical patent/JPS5450204A/en
Publication of JPS5450204A publication Critical patent/JPS5450204A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M7/00—Arrangements for interconnection between switching centres
    • H04M7/16—Arrangements for interconnection between switching centres in systems employing carrier frequencies

Landscapes

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

Abstract

PURPOSE:To set arbitrarily an arrival level to a terminal by compensating the line loss from the exchange to the subscriber terminal without having influence on the level characteristic of a four-wire section by providing an asymmetrical gain equipment in a two-wire section of the carrier telephony line. CONSTITUTION:The signal of subscriber terminal 31 is subjected to an attenuation of 4dB by line loss 41 and is subjected to a gain of 4dB by asymmetrical gain equipment 61 and is made equal to the signal level from terminal 31. Meanwhile, the signal from point P1 is subjected to a gain of 11dB in gain equipment 61 and is subjected to an attenuation of 4dB by line loss 41 and reaches terminal 31 at -1dB in case of point P1 of -8dB. The similar level compensation is also performed in respect to subscriber terminal 32.
JP11563977A 1977-09-28 1977-09-28 Speech path line Pending JPS5450204A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11563977A JPS5450204A (en) 1977-09-28 1977-09-28 Speech path line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11563977A JPS5450204A (en) 1977-09-28 1977-09-28 Speech path line

Publications (1)

Publication Number Publication Date
JPS5450204A true JPS5450204A (en) 1979-04-20

Family

ID=14667611

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11563977A Pending JPS5450204A (en) 1977-09-28 1977-09-28 Speech path line

Country Status (1)

Country Link
JP (1) JPS5450204A (en)

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