NL141746B - MULTIFREQUENT SIGNALING SYSTEM. - Google Patents

MULTIFREQUENT SIGNALING SYSTEM.

Info

Publication number
NL141746B
NL141746B NL297624A NL297624A NL141746B NL 141746 B NL141746 B NL 141746B NL 297624 A NL297624 A NL 297624A NL 297624 A NL297624 A NL 297624A NL 141746 B NL141746 B NL 141746B
Authority
NL
Netherlands
Prior art keywords
multifrequent
signaling system
signaling
multifrequent signaling
Prior art date
Application number
NL297624A
Other languages
Dutch (nl)
Original Assignee
Bell Telephone Mfg
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
Priority to NL297624D priority Critical patent/NL297624A/xx
Application filed by Bell Telephone Mfg filed Critical Bell Telephone Mfg
Priority to NL297624A priority patent/NL141746B/en
Priority to BE646658D priority patent/BE646658A/xx
Priority to DE1964ST022615 priority patent/DE1232212B/en
Priority to GB3633564A priority patent/GB1071526A/en
Priority to CH1155664A priority patent/CH444242A/en
Priority to BR16244964A priority patent/BR6462449D0/en
Priority to FR987575A priority patent/FR1412616A/en
Publication of NL141746B publication Critical patent/NL141746B/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
    • H04Q1/453—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling in which m-out-of-n signalling frequencies are transmitted

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
NL297624A 1963-09-09 1963-09-09 MULTIFREQUENT SIGNALING SYSTEM. NL141746B (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
NL297624D NL297624A (en) 1963-09-09
NL297624A NL141746B (en) 1963-09-09 1963-09-09 MULTIFREQUENT SIGNALING SYSTEM.
BE646658D BE646658A (en) 1963-09-09 1964-04-17
DE1964ST022615 DE1232212B (en) 1963-09-09 1964-09-01 Receiving device for multi-frequency code characters in telecommunications, especially telephone exchanges
GB3633564A GB1071526A (en) 1963-09-09 1964-09-04 Multi-frequency signalling systems
CH1155664A CH444242A (en) 1963-09-09 1964-09-04 Multiple frequency signal system
BR16244964A BR6462449D0 (en) 1963-09-09 1964-09-08 DETECTION AND SIGNALING SYSTEMS
FR987575A FR1412616A (en) 1963-09-09 1964-09-09 Signaling and detection system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL297624A NL141746B (en) 1963-09-09 1963-09-09 MULTIFREQUENT SIGNALING SYSTEM.

Publications (1)

Publication Number Publication Date
NL141746B true NL141746B (en) 1974-03-15

Family

ID=19755024

Family Applications (2)

Application Number Title Priority Date Filing Date
NL297624D NL297624A (en) 1963-09-09
NL297624A NL141746B (en) 1963-09-09 1963-09-09 MULTIFREQUENT SIGNALING SYSTEM.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
NL297624D NL297624A (en) 1963-09-09

Country Status (6)

Country Link
BE (1) BE646658A (en)
BR (1) BR6462449D0 (en)
CH (1) CH444242A (en)
DE (1) DE1232212B (en)
GB (1) GB1071526A (en)
NL (2) NL141746B (en)

Also Published As

Publication number Publication date
NL297624A (en)
DE1232212B (en) 1967-01-12
CH444242A (en) 1967-09-30
GB1071526A (en) 1967-06-07
BE646658A (en) 1964-10-19
BR6462449D0 (en) 1973-09-18

Similar Documents

Publication Publication Date Title
NL147552B (en) COMMUNICATION SYSTEM.
NL161599C (en) CALCULATION SYSTEM.
NL155428B (en) INFORMATION-REDUCING SYSTEM.
DK115375B (en) Pump system.
DK115947B (en) Vagitorium.
FR3427M (en) Bis-alkanolamine derivative.
BR6459332D0 (en) COMMUNICATION SYSTEM
DK105902C (en) Metalbor.
DK111731B (en) Protection systems.
DK126669B (en) Cooling system.
DK123038B (en) Hydraulic system.
FR3413M (en) D - (-) - alpha-aminobenzylpenicillin trihydrate.
NL144110B (en) SIGNAL SYSTEM.
DK106531C (en) Combine.
DK109761C (en) Electrical Indication System.
DK107717C (en) Pattegummi.
NL148116B (en) WEEFLIS.
FR3840M (en) Substituted chlorothioxanthenes.
DK135139B (en) Electromagnet.
NL144671B (en) SPINDHOP.
NL142340B (en) CASTING.
DK111047B (en) Tanker.
DK108183C (en) Warning buoy.
NL141746B (en) MULTIFREQUENT SIGNALING SYSTEM.
DK109811C (en) Overview radar system.