GB8511120D0 - Dtmf receiver - Google Patents

Dtmf receiver

Info

Publication number
GB8511120D0
GB8511120D0 GB858511120A GB8511120A GB8511120D0 GB 8511120 D0 GB8511120 D0 GB 8511120D0 GB 858511120 A GB858511120 A GB 858511120A GB 8511120 A GB8511120 A GB 8511120A GB 8511120 D0 GB8511120 D0 GB 8511120D0
Authority
GB
United Kingdom
Prior art keywords
dtmf receiver
dtmf
receiver
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.)
Withdrawn
Application number
GB858511120A
Other versions
GB2174522A (en
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB08511120A priority Critical patent/GB2174522A/en
Publication of GB8511120D0 publication Critical patent/GB8511120D0/en
Publication of GB2174522A publication Critical patent/GB2174522A/en
Withdrawn legal-status Critical Current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)
GB08511120A 1985-05-01 1985-05-01 DTMF Receiver Withdrawn GB2174522A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08511120A GB2174522A (en) 1985-05-01 1985-05-01 DTMF Receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08511120A GB2174522A (en) 1985-05-01 1985-05-01 DTMF Receiver

Publications (2)

Publication Number Publication Date
GB8511120D0 true GB8511120D0 (en) 1985-06-12
GB2174522A GB2174522A (en) 1986-11-05

Family

ID=10578530

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08511120A Withdrawn GB2174522A (en) 1985-05-01 1985-05-01 DTMF Receiver

Country Status (1)

Country Link
GB (1) GB2174522A (en)

Also Published As

Publication number Publication date
GB2174522A (en) 1986-11-05

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)