JPS5324706A - Receiver*transmitter - Google Patents

Receiver*transmitter

Info

Publication number
JPS5324706A
JPS5324706A JP9622977A JP9622977A JPS5324706A JP S5324706 A JPS5324706 A JP S5324706A JP 9622977 A JP9622977 A JP 9622977A JP 9622977 A JP9622977 A JP 9622977A JP S5324706 A JPS5324706 A JP S5324706A
Authority
JP
Japan
Prior art keywords
transmitter
receiver
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.)
Pending
Application number
JP9622977A
Other languages
Japanese (ja)
Inventor
Einaa Orusen Rorufu
Oogasuto Mantaa Aansuto
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.)
Nortel Networks Ltd
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 JPS5324706A publication Critical patent/JPS5324706A/en
Pending 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
    • H04Q1/457—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)
JP9622977A 1976-08-19 1977-08-12 Receiver*transmitter Pending JPS5324706A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA259,463A CA1053821A (en) 1976-08-19 1976-08-19 Receiver/sender for signalling between telephone switching facilities

Publications (1)

Publication Number Publication Date
JPS5324706A true JPS5324706A (en) 1978-03-07

Family

ID=4106691

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9622977A Pending JPS5324706A (en) 1976-08-19 1977-08-12 Receiver*transmitter

Country Status (9)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0219296A (en) * 1988-07-05 1990-01-23 Tokyo Kyoei Shokai:Kk Hopper gate opening and closing apparatus

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 (en) * 1974-07-26 1976-02-20 Materiel Telephonique System of signalling between data processing centres - has seven frequency divider sub-assemblies, decoders and filters

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0219296A (en) * 1988-07-05 1990-01-23 Tokyo Kyoei Shokai:Kk Hopper gate opening and closing apparatus

Also Published As

Publication number Publication date
FR2362545A1 (en) 1978-03-17
SE7709370L (en) 1978-02-20
DE2735478A1 (en) 1978-02-23
GB1553019A (en) 1979-09-19
BE857802A (en) 1978-02-16
CA1053821A (en) 1979-05-01
NL7707137A (en) 1978-02-21
ES461745A1 (en) 1978-05-01

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