FR2167932A1 - - Google Patents

Info

Publication number
FR2167932A1
FR2167932A1 FR7300839A FR7300839A FR2167932A1 FR 2167932 A1 FR2167932 A1 FR 2167932A1 FR 7300839 A FR7300839 A FR 7300839A FR 7300839 A FR7300839 A FR 7300839A FR 2167932 A1 FR2167932 A1 FR 2167932A1
Authority
FR
France
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
FR7300839A
Other languages
French (fr)
Other versions
FR2167932B3 (en
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric 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 International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of FR2167932A1 publication Critical patent/FR2167932A1/fr
Application granted granted Critical
Publication of FR2167932B3 publication Critical patent/FR2167932B3/fr
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
    • H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
    • H04Q1/453—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling in which m-out-of-n signalling frequencies are transmitted
    • 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
    • H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
    • H04Q1/457—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling with conversion of multifrequency signals into digital signals
    • H04Q1/4575—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling with conversion of multifrequency signals into digital signals which are transmitted in digital form

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Measuring Frequencies, Analyzing Spectra (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
FR7300839A 1972-01-11 1973-01-11 Expired FR2167932B3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722201166 DE2201166A1 (en) 1972-01-11 1972-01-11 CIRCUIT ARRANGEMENT FOR A SELECTIVE SIGNAL RECEIVER

Publications (2)

Publication Number Publication Date
FR2167932A1 true FR2167932A1 (en) 1973-08-24
FR2167932B3 FR2167932B3 (en) 1976-01-09

Family

ID=5832734

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7300839A Expired FR2167932B3 (en) 1972-01-11 1973-01-11

Country Status (3)

Country Link
DE (1) DE2201166A1 (en)
FR (1) FR2167932B3 (en)
GB (1) GB1393071A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2554658A1 (en) * 1983-11-09 1985-05-10 Pinet Andre Method of detecting alternating signals transmitted over telephone lines.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2554658A1 (en) * 1983-11-09 1985-05-10 Pinet Andre Method of detecting alternating signals transmitted over telephone lines.

Also Published As

Publication number Publication date
DE2201166A1 (en) 1973-07-12
GB1393071A (en) 1975-05-07
FR2167932B3 (en) 1976-01-09

Similar Documents

Publication Publication Date Title
FR2182648A1 (en)
JPS4957893A (en)
JPS4985764A (en)
JPS5246514B2 (en)
CS161675B2 (en)
CS162637B2 (en)
AU469567B2 (en)
JPS4923669U (en)
JPS5322810Y2 (en)
JPS4887603A (en)
JPS4941553A (en)
JPS5220920Y2 (en)
JPS5217081Y2 (en)
JPS512462Y2 (en)
CS163015B1 (en)
CS150474B1 (en)
JPS4877152A (en)
JPS4949959U (en)
CS168158B1 (en)
CS164336B1 (en)
CS163952B1 (en)
CS163803B1 (en)
CS163476B1 (en)
JPS4918306A (en)
CS163014B1 (en)

Legal Events

Date Code Title Description
ST Notification of lapse