SE7905902L - TELEFONABBONNENTVEXEL - Google Patents

TELEFONABBONNENTVEXEL

Info

Publication number
SE7905902L
SE7905902L SE7905902A SE7905902A SE7905902L SE 7905902 L SE7905902 L SE 7905902L SE 7905902 A SE7905902 A SE 7905902A SE 7905902 A SE7905902 A SE 7905902A SE 7905902 L SE7905902 L SE 7905902L
Authority
SE
Sweden
Prior art keywords
filter
telephone device
frequency
omega
khz
Prior art date
Application number
SE7905902A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE440304B (en
Inventor
R Forster
Original Assignee
Sodeco Compteurs De Geneve
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 Sodeco Compteurs De Geneve filed Critical Sodeco Compteurs De Geneve
Publication of SE7905902L publication Critical patent/SE7905902L/en
Publication of SE440304B publication Critical patent/SE440304B/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/28—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP with meter at substation or with calculation of charges at terminal

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Meter Arrangements (AREA)
  • Cable Accessories (AREA)
  • Insulated Conductors (AREA)
  • Telephonic Communication Services (AREA)
  • Interface Circuits In Exchanges (AREA)

Abstract

The telephone subscriber filter has a blocking filter (5; 5') which keeps the charge pulses which arrive via the exchange line with frequencies in the vicinity of the upper voice band limit, preferably around 4 kHz, away from the telephone device and which comprises a reactance filter in the form of a chain circuit with the structure of an impedance-balanced filter; it is, however, designed on the telephone device (2) side for a complex termination comprising an 800-1000 OMEGA ohmic resistor (R2) and a 30-50 nF capacitor (C2) connected in parallel with it and on the exchange side for a real termination with a 1000-1200 OMEGA ohmic resistor (R1). A frequency converter (9) is connected downstream of the charge pulse receiving circuit (6') which converts the charge pulse frequencies into a frequency of 12 or 16 kHz which is suitable for conventional high-frequency metering and whose output on the blocking filter (5') side facing the telephone device (2) is coupled with the speech wires. <IMAGE>
SE7905902A 1978-07-07 1979-07-06 PHONE CONNECTOR SWITCH FOR CONNECTING TO A PUPINIZED CABLE SE440304B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH741478A CH632624A5 (en) 1978-07-07 1978-07-07 Telephone subscriber filter with charge pulse blocking filter for connection to a coil-loaded line

Publications (2)

Publication Number Publication Date
SE7905902L true SE7905902L (en) 1980-01-08
SE440304B SE440304B (en) 1985-07-22

Family

ID=4324754

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7905902A SE440304B (en) 1978-07-07 1979-07-06 PHONE CONNECTOR SWITCH FOR CONNECTING TO A PUPINIZED CABLE

Country Status (6)

Country Link
AU (1) AU526266B2 (en)
BE (1) BE893341A (en)
CH (1) CH632624A5 (en)
FR (1) FR2430698A1 (en)
NO (1) NO148239C (en)
SE (1) SE440304B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06217062A (en) * 1993-01-20 1994-08-05 Canon Inc Ncu circuit and facsimile equipment
US6567519B1 (en) * 1999-05-28 2003-05-20 Cisco Technology, Inc. System and method for processing an input signal communicated on a telephone line
US6728367B1 (en) * 2000-03-09 2004-04-27 Adc Telecommunications, Inc. Apparatus and method for filtering voiceband and metering tone frequencies of a mixed voice/data signal
WO2003007587A2 (en) * 2001-07-13 2003-01-23 Centillium Communications, Inc. Application of metering tones to a dsl and voice communications system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2071282A5 (en) * 1969-12-23 1971-09-17 Cit Alcatel

Also Published As

Publication number Publication date
FR2430698B1 (en) 1984-04-13
NO148239B (en) 1983-05-24
BE893341A (en) 1982-09-16
FR2430698A1 (en) 1980-02-01
AU4863379A (en) 1980-01-10
AU526266B2 (en) 1982-12-23
NO792256L (en) 1980-01-08
SE440304B (en) 1985-07-22
NO148239C (en) 1983-08-31
CH632624A5 (en) 1982-10-15

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