NL138794B - Abonneetelefoontoestel met een generator voor het opwekken van wisselstroomkiessignalen. - Google Patents

Abonneetelefoontoestel met een generator voor het opwekken van wisselstroomkiessignalen.

Info

Publication number
NL138794B
NL138794B NL60257471A NL257471A NL138794B NL 138794 B NL138794 B NL 138794B NL 60257471 A NL60257471 A NL 60257471A NL 257471 A NL257471 A NL 257471A NL 138794 B NL138794 B NL 138794B
Authority
NL
Netherlands
Prior art keywords
generator
generating
power signals
subscriber telephone
subscriber
Prior art date
Application number
NL60257471A
Other languages
English (en)
Dutch (nl)
Original Assignee
Western Electric Co
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 Western Electric Co filed Critical Western Electric Co
Publication of NL138794B publication Critical patent/NL138794B/xx

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M1/00Substation equipment, e.g. for use by subscribers
    • H04M1/26Devices for calling a subscriber
    • H04M1/30Devices which can set up and transmit only one digit at a time
    • H04M1/50Devices which can set up and transmit only one digit at a time by generating or selecting currents of predetermined frequencies or combinations of frequencies
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M19/00Current supply arrangements for telephone systems
    • H04M19/02Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • H04M19/04Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
NL60257471A 1959-12-16 1960-11-01 Abonneetelefoontoestel met een generator voor het opwekken van wisselstroomkiessignalen. NL138794B (nl)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US859936A US3064084A (en) 1959-12-16 1959-12-16 Telephone substation apparatus

Publications (1)

Publication Number Publication Date
NL138794B true NL138794B (nl) 1973-05-15

Family

ID=25332106

Family Applications (2)

Application Number Title Priority Date Filing Date
NL257471D NL257471A (US20100012521A1-20100121-C00001.png) 1959-12-16
NL60257471A NL138794B (nl) 1959-12-16 1960-11-01 Abonneetelefoontoestel met een generator voor het opwekken van wisselstroomkiessignalen.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
NL257471D NL257471A (US20100012521A1-20100121-C00001.png) 1959-12-16

Country Status (8)

Country Link
US (2) US3064084A (US20100012521A1-20100121-C00001.png)
JP (1) JPS3712210B1 (US20100012521A1-20100121-C00001.png)
BE (1) BE597790A (US20100012521A1-20100121-C00001.png)
DE (1) DE1141343B (US20100012521A1-20100121-C00001.png)
ES (1) ES263736A1 (US20100012521A1-20100121-C00001.png)
FR (1) FR1275106A (US20100012521A1-20100121-C00001.png)
GB (1) GB964335A (US20100012521A1-20100121-C00001.png)
NL (2) NL138794B (US20100012521A1-20100121-C00001.png)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3288932A (en) * 1963-04-24 1966-11-29 Automatic Elect Lab Voice-data substation apparatus actuated by tone from central switching office
DE1185665B (de) * 1963-09-14 1965-01-21 Standard Elektrik Lorenz Ag Tastengesteuerter Mehrfrequenz-Tongenerator
US3284577A (en) * 1963-10-10 1966-11-08 Substation apparatus employing a multi- frequency signaling arrangement
DE1194912B (de) * 1963-12-30 1965-06-16 Siemens Ag Schwingungserzeuger fuer die Tastaturwahl in Fernsprechvermittlungsanlagen
US3447096A (en) * 1965-08-17 1969-05-27 Bell Telephone Labor Inc Multifrequency signal generator
DE1907921B1 (de) * 1969-02-17 1970-06-25 Siemens Ag Tastenanordnung fuer Teilnehmerstellen in Fernmelde-,insbesondere Fernsprechanlagen,mit einem kontaktlosen Schalter
US3745261A (en) * 1971-09-20 1973-07-10 Bell Telephone Labor Inc Telephone set speech network
CA947444A (en) * 1972-04-17 1974-05-14 Bell Canada Telephone substation apparatus
US3899638A (en) * 1973-10-29 1975-08-12 Interface Technology Inc Portable tone data transmitter
NL7402574A (nl) * 1974-02-26 1975-08-28 Philips Nv Schakeling voor een toondruktoetskeuzetelefoon- toestel.
US3970801A (en) * 1974-12-03 1976-07-20 Motorola, Inc. Dialing apparatus for a portable radio telephone
US4315108A (en) * 1975-09-29 1982-02-09 Mostek Corporation Integrated circuit chip telephone communication system
US4314107A (en) * 1979-12-26 1982-02-02 United Networks, Inc. Subscriber station networks
WO2007064960A2 (en) * 2005-11-30 2007-06-07 University Of South Florida Mov failure mode identification
EP2135671B1 (en) 2008-06-19 2015-03-04 Mitsubishi Gas Chemical Company, Inc. Catalyst and method for producing carboxylic acid and/or carboxylic anhydride in the presence of the catalyst

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE539848A (US20100012521A1-20100121-C00001.png) * 1954-07-16
BE559221A (US20100012521A1-20100121-C00001.png) * 1956-07-26
US2846512A (en) * 1956-12-31 1958-08-05 Bell Telephone Labor Inc Party line station identifying impulse transmitter

Also Published As

Publication number Publication date
FR1275106A (fr) 1961-11-03
NL257471A (US20100012521A1-20100121-C00001.png) 1900-01-01
BE597790A (fr) 1961-03-31
JPS3712210B1 (US20100012521A1-20100121-C00001.png) 1962-08-28
USRE25507E (en) 1964-01-07
GB964335A (en) 1964-07-22
DE1141343B (de) 1962-12-20
US3064084A (en) 1962-11-13
ES263736A1 (es) 1961-03-16

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