FR1518956A - Récepteur d'informations transmises sous forme de combinaisons de fréquence - Google Patents

Récepteur d'informations transmises sous forme de combinaisons de fréquence

Info

Publication number
FR1518956A
FR1518956A FR8342A FR06008342A FR1518956A FR 1518956 A FR1518956 A FR 1518956A FR 8342 A FR8342 A FR 8342A FR 06008342 A FR06008342 A FR 06008342A FR 1518956 A FR1518956 A FR 1518956A
Authority
FR
France
Prior art keywords
receiver
information transmitted
frequency combinations
combinations
frequency
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
FR8342A
Other languages
English (en)
Inventor
Jean Garcia
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.)
Compagnie IBM France SAS
Original Assignee
Compagnie IBM France SAS
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 Compagnie IBM France SAS filed Critical Compagnie IBM France SAS
Priority to FR8342A priority Critical patent/FR1518956A/fr
Priority to DE1968J0035627 priority patent/DE1562128B2/de
Application granted granted Critical
Publication of FR1518956A publication Critical patent/FR1518956A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite
    • H04Q3/62—Arrangements providing connection between main exchange and sub-exchange or satellite for connecting to private branch exchanges
    • H04Q3/625—Arrangements in the private branch exchange
    • 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
    • H04Q1/4535—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 with an additional signal transmitted for voice protection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Telephone Function (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Telephonic Communication Services (AREA)
FR8342A 1967-02-02 1967-02-02 Récepteur d'informations transmises sous forme de combinaisons de fréquence Expired FR1518956A (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR8342A FR1518956A (fr) 1967-02-02 1967-02-02 Récepteur d'informations transmises sous forme de combinaisons de fréquence
DE1968J0035627 DE1562128B2 (de) 1967-02-02 1968-02-01 Schaltungsanordnung zur Aufnahme tonfrequenter Wahlkennzeichen in Fernmelde-, insbesondere Fernsprechanlagen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8342A FR1518956A (fr) 1967-02-02 1967-02-02 Récepteur d'informations transmises sous forme de combinaisons de fréquence

Publications (1)

Publication Number Publication Date
FR1518956A true FR1518956A (fr) 1968-03-29

Family

ID=8573175

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8342A Expired FR1518956A (fr) 1967-02-02 1967-02-02 Récepteur d'informations transmises sous forme de combinaisons de fréquence

Country Status (2)

Country Link
DE (1) DE1562128B2 (fr)
FR (1) FR1518956A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2554658B1 (fr) * 1983-11-09 1986-09-05 Pinet Andre Procede de detection de signaux alternatifs transmis sur les lignes telephoniques

Also Published As

Publication number Publication date
DE1562128A1 (de) 1970-02-19
DE1562128B2 (de) 1971-02-04

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