NL7707137A - RECEIVE SEND DEVICE. - Google Patents

RECEIVE SEND DEVICE.

Info

Publication number
NL7707137A
NL7707137A NL7707137A NL7707137A NL7707137A NL 7707137 A NL7707137 A NL 7707137A NL 7707137 A NL7707137 A NL 7707137A NL 7707137 A NL7707137 A NL 7707137A NL 7707137 A NL7707137 A NL 7707137A
Authority
NL
Netherlands
Prior art keywords
send device
receive send
receive
send
Prior art date
Application number
NL7707137A
Other languages
Dutch (nl)
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 NL7707137A publication Critical patent/NL7707137A/en

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
NL7707137A 1976-08-19 1977-06-28 RECEIVE SEND DEVICE. NL7707137A (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
NL7707137A true NL7707137A (en) 1978-02-21

Family

ID=4106691

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7707137A NL7707137A (en) 1976-08-19 1977-06-28 RECEIVE SEND DEVICE.

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)

Families Citing this family (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

Also Published As

Publication number Publication date
CA1053821A (en) 1979-05-01
DE2735478A1 (en) 1978-02-23
BE857802A (en) 1978-02-16
FR2362545A1 (en) 1978-03-17
GB1553019A (en) 1979-09-19
JPS5324706A (en) 1978-03-07
ES461745A1 (en) 1978-05-01
SE7709370L (en) 1978-02-20

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Legal Events

Date Code Title Description
BV The patent application has lapsed