IL55411A - Arrangement for detecting pulsating d.c.switching signals from telephone subscriber substation - Google Patents

Arrangement for detecting pulsating d.c.switching signals from telephone subscriber substation

Info

Publication number
IL55411A
IL55411A IL55411A IL5541178A IL55411A IL 55411 A IL55411 A IL 55411A IL 55411 A IL55411 A IL 55411A IL 5541178 A IL5541178 A IL 5541178A IL 55411 A IL55411 A IL 55411A
Authority
IL
Israel
Prior art keywords
arrangement
switching signals
telephone subscriber
subscriber substation
detecting pulsating
Prior art date
Application number
IL55411A
Other versions
IL55411A0 (en
Original Assignee
Siemens Ag Albis
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 Siemens Ag Albis filed Critical Siemens Ag Albis
Publication of IL55411A0 publication Critical patent/IL55411A0/en
Publication of IL55411A publication Critical patent/IL55411A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/2272—Subscriber line supervision circuits, e.g. call detection circuits
    • 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
    • H04Q1/38—Signalling arrangements; Manipulation of signalling currents using combinations of direct currents of different amplitudes or polarities over line conductors or combination of line conductors

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
IL55411A 1977-08-24 1978-08-23 Arrangement for detecting pulsating d.c.switching signals from telephone subscriber substation IL55411A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1035277A CH618306A5 (en) 1977-08-24 1977-08-24 Arrangement for identifying a DC switching signal in a telecommunications system

Publications (2)

Publication Number Publication Date
IL55411A0 IL55411A0 (en) 1978-10-31
IL55411A true IL55411A (en) 1981-01-30

Family

ID=4362290

Family Applications (1)

Application Number Title Priority Date Filing Date
IL55411A IL55411A (en) 1977-08-24 1978-08-23 Arrangement for detecting pulsating d.c.switching signals from telephone subscriber substation

Country Status (3)

Country Link
CH (1) CH618306A5 (en)
IL (1) IL55411A (en)
NL (1) NL7808262A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7904429A (en) * 1979-06-06 1980-12-09 Philips Nv FLOW DETECTION DEVICE FOR AN AUTOMATIC TELEPHONE CONTROL PANEL.

Also Published As

Publication number Publication date
NL7808262A (en) 1979-02-27
IL55411A0 (en) 1978-10-31
CH618306A5 (en) 1980-07-15

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