FR1420110A - Setup to automatically compensate for differences in attenuation between subscriber telephone lines of different lengths - Google Patents

Setup to automatically compensate for differences in attenuation between subscriber telephone lines of different lengths

Info

Publication number
FR1420110A
FR1420110A FR1150A FR1150A FR1420110A FR 1420110 A FR1420110 A FR 1420110A FR 1150 A FR1150 A FR 1150A FR 1150 A FR1150 A FR 1150A FR 1420110 A FR1420110 A FR 1420110A
Authority
FR
France
Prior art keywords
setup
attenuation
differences
different lengths
telephone lines
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.)
Expired
Application number
FR1150A
Other languages
French (fr)
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.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
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 and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Priority to FR1150A priority Critical patent/FR1420110A/en
Application granted granted Critical
Publication of FR1420110A publication Critical patent/FR1420110A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/40—Artificial lines; Networks simulating a line of certain length
    • 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)
  • Computer Networks & Wireless Communication (AREA)
FR1150A 1964-01-15 1965-01-07 Setup to automatically compensate for differences in attenuation between subscriber telephone lines of different lengths Expired FR1420110A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR1150A FR1420110A (en) 1964-01-15 1965-01-07 Setup to automatically compensate for differences in attenuation between subscriber telephone lines of different lengths

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DES0089064 1964-01-15
FR1150A FR1420110A (en) 1964-01-15 1965-01-07 Setup to automatically compensate for differences in attenuation between subscriber telephone lines of different lengths

Publications (1)

Publication Number Publication Date
FR1420110A true FR1420110A (en) 1965-12-03

Family

ID=25997539

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1150A Expired FR1420110A (en) 1964-01-15 1965-01-07 Setup to automatically compensate for differences in attenuation between subscriber telephone lines of different lengths

Country Status (1)

Country Link
FR (1) FR1420110A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2235555A1 (en) * 1973-06-28 1975-01-24 Person Jean Michel Regulation of acoustic performance of telephones - employs a single varistor and provides level control

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2235555A1 (en) * 1973-06-28 1975-01-24 Person Jean Michel Regulation of acoustic performance of telephones - employs a single varistor and provides level control

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