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CA1111531A - Digital signalling receiver for receiving pcm tones - Google Patents

Digital signalling receiver for receiving pcm tones

Info

Publication number
CA1111531A
CA1111531A CA322,112A CA322112A CA1111531A CA 1111531 A CA1111531 A CA 1111531A CA 322112 A CA322112 A CA 322112A CA 1111531 A CA1111531 A CA 1111531A
Authority
CA
Canada
Prior art keywords
signals
signal
signalling
filter
pcm
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
CA322,112A
Other languages
English (en)
French (fr)
Inventor
Jackylene K. Hood
Sorin Cohn-Sfetcu
Daniel J. Doyle
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
Priority to CA322,112A priority Critical patent/CA1111531A/en
Priority to GB8004800A priority patent/GB2044039B/en
Priority to DE19803005740 priority patent/DE3005740A1/de
Priority to IT19986/80A priority patent/IT1140634B/it
Priority to SE8001315A priority patent/SE452388B/sv
Priority to NL8001026A priority patent/NL8001026A/nl
Priority to FR8003681A priority patent/FR2450017A1/fr
Priority to AT0096280A priority patent/AT386312B/de
Priority to JP2152180A priority patent/JPS55137788A/ja
Application granted granted Critical
Publication of CA1111531A publication Critical patent/CA1111531A/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
    • H04Q1/4575—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 which are transmitted in digital form

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
  • Mobile Radio Communication Systems (AREA)
CA322,112A 1979-02-22 1979-02-22 Digital signalling receiver for receiving pcm tones Expired CA1111531A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
CA322,112A CA1111531A (en) 1979-02-22 1979-02-22 Digital signalling receiver for receiving pcm tones
GB8004800A GB2044039B (en) 1979-02-22 1980-02-13 Digital signalling receiver for receiving pcm tones
DE19803005740 DE3005740A1 (de) 1979-02-22 1980-02-15 Digital-signalisierungsempfaenger fuer pcm-toene
IT19986/80A IT1140634B (it) 1979-02-22 1980-02-18 Ricevitore digitale di chiamata,per la ricezione di tono segnali modulati impulsivamente in codice
SE8001315A SE452388B (sv) 1979-02-22 1980-02-19 Signalleringsmottagare och sett for mottagande av pulskodmodulerade, pcm, tonsignaler
NL8001026A NL8001026A (nl) 1979-02-22 1980-02-20 Digitale signaalontvanger voor het ontvangen van pcm tonen.
FR8003681A FR2450017A1 (fr) 1979-02-22 1980-02-20 Recepteur pour signalisation numerique destine a la reception de sons modules par impulsions codees (mic)
AT0096280A AT386312B (de) 1979-02-22 1980-02-21 Signalisierungsempfaenger zum empfang pulscodemodulierter signale und verfahren zum betrieb des signalisierungsempfaengers
JP2152180A JPS55137788A (en) 1979-02-22 1980-02-22 Digital signal receiver for receiving pcm voice

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA322,112A CA1111531A (en) 1979-02-22 1979-02-22 Digital signalling receiver for receiving pcm tones

Publications (1)

Publication Number Publication Date
CA1111531A true CA1111531A (en) 1981-10-27

Family

ID=4113607

Family Applications (1)

Application Number Title Priority Date Filing Date
CA322,112A Expired CA1111531A (en) 1979-02-22 1979-02-22 Digital signalling receiver for receiving pcm tones

Country Status (9)

Country Link
JP (1) JPS55137788A (sv)
AT (1) AT386312B (sv)
CA (1) CA1111531A (sv)
DE (1) DE3005740A1 (sv)
FR (1) FR2450017A1 (sv)
GB (1) GB2044039B (sv)
IT (1) IT1140634B (sv)
NL (1) NL8001026A (sv)
SE (1) SE452388B (sv)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5779751A (en) * 1980-11-05 1982-05-19 Nec Corp Signal receiver
FR2504754A1 (fr) * 1981-04-27 1982-10-29 Thomson Csf Mat Tel Dispositif sequenceur a memoires mortes
US4519072A (en) * 1982-11-10 1985-05-21 Rockwell International Corporation Answer supervision system
JPH07171782A (ja) * 1991-07-16 1995-07-11 Haruo Konagai 真空吸着装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1603175A (sv) * 1968-07-30 1971-03-22
US3863030A (en) * 1972-06-01 1975-01-28 Gte Automatic Electric Lab Inc Pcm tone receiver using digital spectrum analysis
JPS51112218A (en) * 1975-03-28 1976-10-04 Hitachi Ltd Multifrequency signal receiver
JPS5918916B2 (ja) * 1975-10-06 1984-05-01 株式会社日立製作所 多周波信号受信器
IT1072242B (it) * 1976-12-17 1985-04-10 Cselt Centro Studi Lab Telecom Procedimento e dispositivo per il riconoscimento di segnali telefonici in codice multifrequenza convertiti in forma numerica

Also Published As

Publication number Publication date
IT8019986A1 (it) 1981-08-18
GB2044039B (en) 1983-05-11
JPS55137788A (en) 1980-10-27
NL8001026A (nl) 1980-08-26
SE8001315L (sv) 1980-08-23
AT386312B (de) 1988-08-10
DE3005740A1 (de) 1980-09-04
IT8019986A0 (it) 1980-02-18
FR2450017B1 (sv) 1984-05-11
GB2044039A (en) 1980-10-08
FR2450017A1 (fr) 1980-09-19
IT1140634B (it) 1986-10-01
ATA96280A (de) 1987-12-15
SE452388B (sv) 1987-11-23

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Legal Events

Date Code Title Description
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