SE9303389L - Sätt att förbättra mottagarens känslighet och talimmuniteten vid DTMF-mottagning (2) - Google Patents

Sätt att förbättra mottagarens känslighet och talimmuniteten vid DTMF-mottagning (2)

Info

Publication number
SE9303389L
SE9303389L SE9303389A SE9303389A SE9303389L SE 9303389 L SE9303389 L SE 9303389L SE 9303389 A SE9303389 A SE 9303389A SE 9303389 A SE9303389 A SE 9303389A SE 9303389 L SE9303389 L SE 9303389L
Authority
SE
Sweden
Prior art keywords
signal
dtmf
methods
difference
receiver sensitivity
Prior art date
Application number
SE9303389A
Other languages
English (en)
Other versions
SE500918C2 (sv
SE9303389D0 (sv
Inventor
Slaven Zimbrek
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Priority to SE9303389A priority Critical patent/SE500918C2/sv
Publication of SE9303389D0 publication Critical patent/SE9303389D0/sv
Publication of SE9303389L publication Critical patent/SE9303389L/sv
Publication of SE500918C2 publication Critical patent/SE500918C2/sv

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
    • H04Q1/46—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies comprising means for distinguishing between a signalling current of predetermined frequency and a complex current containing that frequency, e.g. speech current

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Noise Elimination (AREA)
SE9303389A 1993-10-14 1993-10-14 Sätt att förbättra mottagarens känslighet och talimmuniteten vid DTMF-mottagning SE500918C2 (sv)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE9303389A SE500918C2 (sv) 1993-10-14 1993-10-14 Sätt att förbättra mottagarens känslighet och talimmuniteten vid DTMF-mottagning

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9303389A SE500918C2 (sv) 1993-10-14 1993-10-14 Sätt att förbättra mottagarens känslighet och talimmuniteten vid DTMF-mottagning

Publications (3)

Publication Number Publication Date
SE9303389D0 SE9303389D0 (sv) 1993-10-14
SE9303389L true SE9303389L (sv) 1994-01-04
SE500918C2 SE500918C2 (sv) 1994-10-03

Family

ID=20391433

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9303389A SE500918C2 (sv) 1993-10-14 1993-10-14 Sätt att förbättra mottagarens känslighet och talimmuniteten vid DTMF-mottagning

Country Status (1)

Country Link
SE (1) SE500918C2 (sv)

Also Published As

Publication number Publication date
SE500918C2 (sv) 1994-10-03
SE9303389D0 (sv) 1993-10-14

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Legal Events

Date Code Title Description
NUG Patent has lapsed