FR2483149B1 - METHOD AND DEVICE FOR DETECTING TONES IN TELECOMMUNICATIONS PATHWAYS - Google Patents

METHOD AND DEVICE FOR DETECTING TONES IN TELECOMMUNICATIONS PATHWAYS

Info

Publication number
FR2483149B1
FR2483149B1 FR8011400A FR8011400A FR2483149B1 FR 2483149 B1 FR2483149 B1 FR 2483149B1 FR 8011400 A FR8011400 A FR 8011400A FR 8011400 A FR8011400 A FR 8011400A FR 2483149 B1 FR2483149 B1 FR 2483149B1
Authority
FR
France
Prior art keywords
detecting tones
pathways
telecommunications
telecommunications pathways
tones
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
FR8011400A
Other languages
French (fr)
Other versions
FR2483149A1 (en
Inventor
Claude Auguste Molleron
Daniel Robert Vautier
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.)
Societe Anonyme de Telecommunications SAT
Original Assignee
Societe Anonyme de Telecommunications SAT
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 Societe Anonyme de Telecommunications SAT filed Critical Societe Anonyme de Telecommunications SAT
Priority to FR8011400A priority Critical patent/FR2483149B1/en
Publication of FR2483149A1 publication Critical patent/FR2483149A1/en
Application granted granted Critical
Publication of FR2483149B1 publication Critical patent/FR2483149B1/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/446—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency
    • H04Q1/448—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency with conversion of a single frequency signal into a digital signal
    • H04Q1/4485—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency with conversion of a single frequency signal into a digital signal which is transmitted in digital form

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Telephonic Communication Services (AREA)
FR8011400A 1980-05-22 1980-05-22 METHOD AND DEVICE FOR DETECTING TONES IN TELECOMMUNICATIONS PATHWAYS Expired FR2483149B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8011400A FR2483149B1 (en) 1980-05-22 1980-05-22 METHOD AND DEVICE FOR DETECTING TONES IN TELECOMMUNICATIONS PATHWAYS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8011400A FR2483149B1 (en) 1980-05-22 1980-05-22 METHOD AND DEVICE FOR DETECTING TONES IN TELECOMMUNICATIONS PATHWAYS

Publications (2)

Publication Number Publication Date
FR2483149A1 FR2483149A1 (en) 1981-11-27
FR2483149B1 true FR2483149B1 (en) 1987-11-27

Family

ID=9242219

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8011400A Expired FR2483149B1 (en) 1980-05-22 1980-05-22 METHOD AND DEVICE FOR DETECTING TONES IN TELECOMMUNICATIONS PATHWAYS

Country Status (1)

Country Link
FR (1) FR2483149B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4742537A (en) * 1986-06-04 1988-05-03 Electronic Information Systems, Inc. Telephone line monitoring system

Also Published As

Publication number Publication date
FR2483149A1 (en) 1981-11-27

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Legal Events

Date Code Title Description
ST Notification of lapse