BE857802A - Recepteur-emetteur universel de signaux de signalisation telephoniques - Google Patents

Recepteur-emetteur universel de signaux de signalisation telephoniques

Info

Publication number
BE857802A
BE857802A BE180182A BE180182A BE857802A BE 857802 A BE857802 A BE 857802A BE 180182 A BE180182 A BE 180182A BE 180182 A BE180182 A BE 180182A BE 857802 A BE857802 A BE 857802A
Authority
BE
Belgium
Prior art keywords
transmitter
signaling signals
telephone signaling
universal receiver
universal
Prior art date
Application number
BE180182A
Other languages
English (en)
Inventor
R E Olsen
E A Munter
Original Assignee
Northern Telecom Ltd
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 Northern Telecom Ltd filed Critical Northern Telecom Ltd
Publication of BE857802A publication Critical patent/BE857802A/fr

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
    • H04Q1/457—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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/30—Devices which can set up and transmit only one digit at a time
    • H04M1/50—Devices which can set up and transmit only one digit at a time by generating or selecting currents of predetermined frequencies or combinations of frequencies
    • H04M1/505—Devices which can set up and transmit only one digit at a time by generating or selecting currents of predetermined frequencies or combinations of frequencies signals generated in digital form

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Telephonic Communication Services (AREA)
BE180182A 1976-08-19 1977-08-16 Recepteur-emetteur universel de signaux de signalisation telephoniques BE857802A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA259,463A CA1053821A (fr) 1976-08-19 1976-08-19 Emetteur-recepteur de signalisation entre installations telephonique de commutation

Publications (1)

Publication Number Publication Date
BE857802A true BE857802A (fr) 1978-02-16

Family

ID=4106691

Family Applications (1)

Application Number Title Priority Date Filing Date
BE180182A BE857802A (fr) 1976-08-19 1977-08-16 Recepteur-emetteur universel de signaux de signalisation telephoniques

Country Status (9)

Country Link
JP (1) JPS5324706A (fr)
BE (1) BE857802A (fr)
CA (1) CA1053821A (fr)
DE (1) DE2735478A1 (fr)
ES (1) ES461745A1 (fr)
FR (1) FR2362545A1 (fr)
GB (1) GB1553019A (fr)
NL (1) NL7707137A (fr)
SE (1) SE7709370L (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0219296A (ja) * 1988-07-05 1990-01-23 Tokyo Kyoei Shokai:Kk ホッパのゲート開閉装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3603773A (en) * 1969-08-28 1971-09-07 Vernitron Corp Digital pulse rate generator
US3716794A (en) * 1972-04-26 1973-02-13 E Teggatz Frequency dividing apparatus
FR2280141A1 (fr) * 1974-07-26 1976-02-20 Materiel Telephonique Systeme de signalisation entre centres de traitement d'informations

Also Published As

Publication number Publication date
ES461745A1 (es) 1978-05-01
NL7707137A (nl) 1978-02-21
SE7709370L (fr) 1978-02-20
JPS5324706A (en) 1978-03-07
DE2735478A1 (de) 1978-02-23
CA1053821A (fr) 1979-05-01
GB1553019A (en) 1979-09-19
FR2362545A1 (fr) 1978-03-17

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