NL7609996A - SWITCH DEVICE FOR A SELECTIVE SIGN RECEIVER, ESPECIALLY FOR TELEPHONE INSTALLATIONS. - Google Patents

SWITCH DEVICE FOR A SELECTIVE SIGN RECEIVER, ESPECIALLY FOR TELEPHONE INSTALLATIONS.

Info

Publication number
NL7609996A
NL7609996A NL7609996A NL7609996A NL7609996A NL 7609996 A NL7609996 A NL 7609996A NL 7609996 A NL7609996 A NL 7609996A NL 7609996 A NL7609996 A NL 7609996A NL 7609996 A NL7609996 A NL 7609996A
Authority
NL
Netherlands
Prior art keywords
switch device
telephone installations
sign receiver
selective sign
selective
Prior art date
Application number
NL7609996A
Other languages
Dutch (nl)
Original Assignee
Int Standard Electric Corp
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 Int Standard Electric Corp filed Critical Int Standard Electric Corp
Publication of NL7609996A publication Critical patent/NL7609996A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Manipulation Of Pulses (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Radar Systems Or Details Thereof (AREA)
NL7609996A 1975-09-13 1976-09-09 SWITCH DEVICE FOR A SELECTIVE SIGN RECEIVER, ESPECIALLY FOR TELEPHONE INSTALLATIONS. NL7609996A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2540859A DE2540859C2 (en) 1975-09-13 1975-09-13 Circuit arrangement for a selective character receiver, in particular for telephone systems

Publications (1)

Publication Number Publication Date
NL7609996A true NL7609996A (en) 1977-03-15

Family

ID=5956376

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7609996A NL7609996A (en) 1975-09-13 1976-09-09 SWITCH DEVICE FOR A SELECTIVE SIGN RECEIVER, ESPECIALLY FOR TELEPHONE INSTALLATIONS.

Country Status (11)

Country Link
AT (1) AT353852B (en)
BE (1) BE846033R (en)
CH (1) CH625925A5 (en)
DE (1) DE2540859C2 (en)
DK (1) DK412176A (en)
ES (1) ES451494A1 (en)
FR (1) FR2324182A1 (en)
GB (1) GB1529758A (en)
NL (1) NL7609996A (en)
NO (1) NO763089L (en)
SE (1) SE7610009L (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2334426A1 (en) * 1973-07-06 1975-01-23 Telefonbau & Normalzeit Gmbh EVALUATOR FOR VOICE-PROTECTED FREQUENCY SELECTIVE SIGN RECEIVERS ACCORDING TO THE MULTI-FREQUENCY METHOD
DE2341225B2 (en) * 1973-08-16 1976-10-28 Standard Elektrik Lorenz Ag, 7000 Stuttgart SELECTIVE SIGN RECEIVER FOR REMOTE INDICATORS, IN PARTICULAR TELEPHONE SYSTEMS
DE2341224C3 (en) * 1973-08-16 1982-01-07 Standard Elektrik Lorenz Ag, 7000 Stuttgart Method for frequency recognition in selective character receivers for telecommunication systems, in particular telephone systems

Also Published As

Publication number Publication date
DK412176A (en) 1977-03-14
BE846033R (en) 1977-03-10
DE2540859C2 (en) 1984-01-12
CH625925A5 (en) 1981-10-15
ATA675776A (en) 1979-05-15
NO763089L (en) 1977-03-15
SE7610009L (en) 1977-03-14
FR2324182A1 (en) 1977-04-08
ES451494A1 (en) 1977-10-01
GB1529758A (en) 1978-10-25
DE2540859A1 (en) 1977-03-17
AT353852B (en) 1979-12-10

Similar Documents

Publication Publication Date Title
NL174420C (en) SECURITY DEVICE FOR A TELEPHONE.
NL185643C (en) ECHO-CORRECTION DEVICE FOR A DIGITAL TRANSMISSION SYSTEM.
NL7609343A (en) MOUNTING DEVICE FOR A TELEPHONE EXCHANGE.
NL7810800A (en) CONFERENCE DEVICE IN A COMMUNICATION SYSTEM.
NL7701684A (en) PROTECTION DEVICE FOR LOW-VOLTAGE LINES, PARTICULARLY FOR A TELEPHONE NETWORK.
NL7511633A (en) CIRCUIT FOR LINE SYNCHRONIZATION IN A TELEVISION RECEIVER.
NL7706469A (en) DEVICE FOR FAULT LOCATION IN A DIGITAL TRANSMISSION SYSTEM.
NL7604274A (en) PEN CONTACT DEVICE FOR A SWITCHBOARD.
NL7612232A (en) DISCONNECTOR, ESPECIALLY A MULTIPOLINE DISCONNECTOR.
NL171116C (en) SWITCHING DEVICE FOR A TIME MULTIPLEX COMMUNICATION SYSTEM.
NL7712719A (en) DEVICE FOR TELEPHONE LINE FOR A TELEPHONE CONTROL PANEL.
NL184609C (en) PROTECTION DEVICE, ESPECIALLY FOR ELEVATOR INSTALLATIONS.
NL7703253A (en) SWITCH OPERATING DEVICE FOR A SINGLE TELEPHONE.
NL7609996A (en) SWITCH DEVICE FOR A SELECTIVE SIGN RECEIVER, ESPECIALLY FOR TELEPHONE INSTALLATIONS.
NL7604107A (en) DRINKING DEVICE FOR A DRINKING BUCKET, IN PARTICULAR A CALFING BUCKET.
NL7514044A (en) RINSE DEVICE FOR A BEER TAP INSTALLATION.
NL7402574A (en) CIRCUIT FOR A PUSH KEY SELECTOR TELEPHONE DEVICE.
NL173449B (en) DEVICE FOR VISUAL COMMUNICATION.
NL7801820A (en) SWITCH DEVICE FOR A FREE TALK PHONE.
NL185049C (en) DEVICE FOR REDUCING THE LOCAL EFFECT OF A TELEPHONE STATION.
NL164720C (en) SWITCHING DEVICE FOR A PROGRAM-CONTROLLED TELECOMMUNICATION CONNECTION DEVICE, IN PARTICULAR A TELEPHONE CONNECTION DEVICE.
NL171766C (en) SWITCHING DEVICE FOR INTERRUPTING THE CURRENT IN A LINE LOOP.
NL164448C (en) SWITCHING DEVICE FOR A TELECOMMUNICATIONS STATION, IN PARTICULAR A TELEPHONE STATION.
NL7601330A (en) DEVICE FOR A STAND-ON HOLDER FOR AN OVERVOLTAGE DIVERTER.
NL7608981A (en) PROCEDURE FOR OPERATING THE CONTROL DEVICE OF A CONNECTION SYSTEM, ESPECIALLY A TELEPHONE CONNECTION SYSTEM.

Legal Events

Date Code Title Description
BV The patent application has lapsed