CH401164A - Circuit arrangement for the automatic adjustment of the difference in attenuation of various public-switched telephone subscriber connections - Google Patents

Circuit arrangement for the automatic adjustment of the difference in attenuation of various public-switched telephone subscriber connections

Info

Publication number
CH401164A
CH401164A CH671363A CH671363A CH401164A CH 401164 A CH401164 A CH 401164A CH 671363 A CH671363 A CH 671363A CH 671363 A CH671363 A CH 671363A CH 401164 A CH401164 A CH 401164A
Authority
CH
Switzerland
Prior art keywords
attenuation
difference
circuit arrangement
switched telephone
automatic adjustment
Prior art date
Application number
CH671363A
Other languages
German (de)
Inventor
Hermann Dipl Phys Ritz
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Publication of CH401164A publication Critical patent/CH401164A/en

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
    • 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
    • H04M1/74—Interface circuits for coupling substations to external telephone lines with means for reducing interference; with means for reducing effects due to line faults

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Devices For Supply Of Signal Current (AREA)
CH671363A 1962-05-30 1963-05-29 Circuit arrangement for the automatic adjustment of the difference in attenuation of various public-switched telephone subscriber connections CH401164A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES79696A DE1165670B (en) 1962-05-30 1962-05-30 Circuit arrangement for automatically compensating for the difference in damping between different telephone subscriber lines

Publications (1)

Publication Number Publication Date
CH401164A true CH401164A (en) 1965-10-31

Family

ID=7508380

Family Applications (1)

Application Number Title Priority Date Filing Date
CH671363A CH401164A (en) 1962-05-30 1963-05-29 Circuit arrangement for the automatic adjustment of the difference in attenuation of various public-switched telephone subscriber connections

Country Status (6)

Country Link
BE (1) BE633073A (en)
CH (1) CH401164A (en)
DE (1) DE1165670B (en)
FI (1) FI40475B (en)
GB (1) GB1010526A (en)
SE (1) SE311030B (en)

Also Published As

Publication number Publication date
SE311030B (en) 1969-05-27
GB1010526A (en) 1965-11-17
BE633073A (en)
DE1165670B (en) 1964-03-19
FI40475B (en) 1968-10-31

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