ES399050A1 - Pabx transmission and impulsing circuit - Google Patents

Pabx transmission and impulsing circuit

Info

Publication number
ES399050A1
ES399050A1 ES399050A ES399050A ES399050A1 ES 399050 A1 ES399050 A1 ES 399050A1 ES 399050 A ES399050 A ES 399050A ES 399050 A ES399050 A ES 399050A ES 399050 A1 ES399050 A1 ES 399050A1
Authority
ES
Spain
Prior art keywords
transmission
way
transformer
pabx
speech
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
ES399050A
Other languages
Spanish (es)
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.)
Nokia Spain SA
Original Assignee
Alcatel Espana SA
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 Alcatel Espana SA filed Critical Alcatel Espana SA
Publication of ES399050A1 publication Critical patent/ES399050A1/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite
    • H04Q3/62—Arrangements providing connection between main exchange and sub-exchange or satellite for connecting to private branch exchanges
    • H04Q3/625—Arrangements in the private branch exchange
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M7/00—Arrangements for interconnection between switching centres
    • H04M7/0096—Trunk circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

A circuit arrangement is provided for two-way speech transmission and one-way impulse transmission in telecommunication exchanges. Transmission is across a transformer having first and second windings series connected to, but D.C. isolated from, first and second two-way speech paths respectively. Amplifier means is coupled through additional windings of the transformer to compensate for the attenuation of signals between the two speech paths due to natural transformer losses. A source of regulated D.C. power provides energy to the first two-way speech path and to an impulse repeater circuit coupled thereto. The repeater circuit provides substantially identical impulses to the second two-way speech path.
ES399050A 1971-01-20 1972-01-20 Pabx transmission and impulsing circuit Expired ES399050A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU375971 1971-01-20

Publications (1)

Publication Number Publication Date
ES399050A1 true ES399050A1 (en) 1974-10-16

Family

ID=3694228

Family Applications (1)

Application Number Title Priority Date Filing Date
ES399050A Expired ES399050A1 (en) 1971-01-20 1972-01-20 Pabx transmission and impulsing circuit

Country Status (7)

Country Link
US (1) US3794782A (en)
BE (1) BE778262A (en)
CA (1) CA951444A (en)
DE (1) DE2201986A1 (en)
ES (1) ES399050A1 (en)
FR (1) FR2122947A5 (en)
IT (1) IT946689B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5940358B2 (en) * 1978-10-18 1984-09-29 日本電信電話株式会社 Call path switch circuit
DE3804216A1 (en) * 1988-02-11 1989-08-24 Telefonbau & Normalzeit Gmbh CIRCUIT ARRANGEMENT FOR EXTERNAL LINE TRANSMISSION OF COMMUNICATION SWITCHING SYSTEMS, ESPECIALLY TELEPHONE EXTENSION SYSTEMS

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL287044A (en) * 1961-12-21
DE1616690C3 (en) * 1965-02-08 1974-09-19 Siemens Ag, 1000 Berlin Und 8000 Muenchen Circuit arrangement for reducing the inherent losses of inductances, especially in telephone switching systems

Also Published As

Publication number Publication date
US3794782A (en) 1974-02-26
IT946689B (en) 1973-05-21
BE778262A (en) 1972-07-20
FR2122947A5 (en) 1972-09-01
CA951444A (en) 1974-07-16
DE2201986A1 (en) 1972-08-10

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