AU508271B2 - Translating multiple frequency signalling - Google Patents

Translating multiple frequency signalling

Info

Publication number
AU508271B2
AU508271B2 AU22448/77A AU2244877A AU508271B2 AU 508271 B2 AU508271 B2 AU 508271B2 AU 22448/77 A AU22448/77 A AU 22448/77A AU 2244877 A AU2244877 A AU 2244877A AU 508271 B2 AU508271 B2 AU 508271B2
Authority
AU
Australia
Prior art keywords
multiple frequency
frequency signalling
translating multiple
translating
signalling
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.)
Expired
Application number
AU22448/77A
Other languages
English (en)
Other versions
AU2244877A (en
Inventor
DE Rittenhouse
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 AU2244877A publication Critical patent/AU2244877A/en
Application granted granted Critical
Publication of AU508271B2 publication Critical patent/AU508271B2/en
Expired 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Stereo-Broadcasting Methods (AREA)
AU22448/77A 1976-03-03 1977-02-18 Translating multiple frequency signalling Expired AU508271B2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA247,035A CA1031086A (en) 1976-03-03 1976-03-03 Method and apparatus for translating multiple frequency signalling

Publications (2)

Publication Number Publication Date
AU2244877A AU2244877A (en) 1978-08-24
AU508271B2 true AU508271B2 (en) 1980-03-13

Family

ID=4105372

Family Applications (1)

Application Number Title Priority Date Filing Date
AU22448/77A Expired AU508271B2 (en) 1976-03-03 1977-02-18 Translating multiple frequency signalling

Country Status (11)

Country Link
JP (1) JPS52107708A (xx)
AU (1) AU508271B2 (xx)
BE (1) BE852056A (xx)
CA (1) CA1031086A (xx)
DE (1) DE2709370A1 (xx)
DK (1) DK88877A (xx)
FR (1) FR2343377A1 (xx)
GB (1) GB1532103A (xx)
NL (1) NL186057C (xx)
NO (1) NO770696L (xx)
SE (1) SE424129B (xx)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU592886B2 (en) * 1986-09-03 1990-01-25 Alcatel N.V. Signalling receiver

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5831140B2 (ja) * 1978-11-10 1983-07-04 株式会社日立製作所 信号受信器

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3710031A (en) * 1970-12-23 1973-01-09 Itt Multi frequency receiver
FR2127450A5 (xx) * 1971-03-03 1972-10-13 Ibm France
BR7101977D0 (pt) * 1971-04-05 1973-06-14 Ibm Processos e disposicoes de circuito para decodificacao digital de sinais de frequencia codificada
CA976675A (en) * 1972-10-16 1975-10-21 Microsystems International Limited Dual tone receiver
US3914557A (en) * 1973-04-11 1975-10-21 Bell Telephone Labor Inc Multifrequency tone detecting arrangement
US3936801A (en) * 1974-09-12 1976-02-03 Bell Telephone Laboratories, Incorporated Multifrequency signal receiver timing circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU592886B2 (en) * 1986-09-03 1990-01-25 Alcatel N.V. Signalling receiver

Also Published As

Publication number Publication date
CA1031086A (en) 1978-05-09
JPS52107708A (en) 1977-09-09
SE7702418L (sv) 1977-09-04
GB1532103A (en) 1978-11-15
DK88877A (da) 1977-09-04
BE852056A (fr) 1977-07-01
NL186057B (nl) 1990-04-02
FR2343377A1 (fr) 1977-09-30
FR2343377B1 (xx) 1983-08-12
NL186057C (nl) 1990-09-03
NO770696L (no) 1977-09-06
AU2244877A (en) 1978-08-24
SE424129B (sv) 1982-06-28
NL7702219A (nl) 1977-09-06
DE2709370A1 (de) 1977-09-08

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