ZA766727B - Circuit arrangement for a digital multifrequency-signal receiver - Google Patents

Circuit arrangement for a digital multifrequency-signal receiver

Info

Publication number
ZA766727B
ZA766727B ZA766727A ZA766727A ZA766727B ZA 766727 B ZA766727 B ZA 766727B ZA 766727 A ZA766727 A ZA 766727A ZA 766727 A ZA766727 A ZA 766727A ZA 766727 B ZA766727 B ZA 766727B
Authority
ZA
South Africa
Prior art keywords
circuit arrangement
signal receiver
digital multifrequency
multifrequency
digital
Prior art date
Application number
ZA766727A
Inventor
W Ohl
H Ball
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 ZA766727B publication Critical patent/ZA766727B/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)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Electronic Switches (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Telephone Function (AREA)
ZA766727A 1975-11-27 1976-11-10 Circuit arrangement for a digital multifrequency-signal receiver ZA766727B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2553258A DE2553258C3 (en) 1975-11-27 1975-11-27 Circuit arrangement for a digital multi-frequency character receiver

Publications (1)

Publication Number Publication Date
ZA766727B true ZA766727B (en) 1977-10-26

Family

ID=5962770

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA766727A ZA766727B (en) 1975-11-27 1976-11-10 Circuit arrangement for a digital multifrequency-signal receiver

Country Status (8)

Country Link
BE (1) BE848776R (en)
CA (1) CA1078980A (en)
CH (1) CH601955A5 (en)
DE (1) DE2553258C3 (en)
ES (1) ES453636A1 (en)
FR (1) FR2333398A1 (en)
GB (1) GB1545254A (en)
ZA (1) ZA766727B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7903346A (en) * 1979-04-27 1980-10-29 Bell Telephone Mfg DIGITAL SIGNALING SYSTEM.

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3912869A (en) * 1973-11-21 1975-10-14 Tel Tone Corp Multifrequency-to-digital converter

Also Published As

Publication number Publication date
CH601955A5 (en) 1978-07-14
DE2553258B2 (en) 1979-10-25
DE2553258A1 (en) 1977-06-02
BE848776R (en) 1977-05-26
DE2553258C3 (en) 1980-07-03
FR2333398B1 (en) 1982-10-22
FR2333398A1 (en) 1977-06-24
GB1545254A (en) 1979-05-02
CA1078980A (en) 1980-06-03
ES453636A1 (en) 1977-11-16

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