IL55411A0 - An arragement for recognising pulsing d.c. signals emitted by a pulse-operated telecommunication insstallation - Google Patents

An arragement for recognising pulsing d.c. signals emitted by a pulse-operated telecommunication insstallation

Info

Publication number
IL55411A0
IL55411A0 IL7855411A IL5541178A IL55411A0 IL 55411 A0 IL55411 A0 IL 55411A0 IL 7855411 A IL7855411 A IL 7855411A IL 5541178 A IL5541178 A IL 5541178A IL 55411 A0 IL55411 A0 IL 55411A0
Authority
IL
Israel
Prior art keywords
insstallation
arragement
recognising
pulsing
pulse
Prior art date
Application number
IL7855411A
Other versions
IL55411A (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)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (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 true IL55411A0 (en) 1978-10-31
IL55411A 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
IL55411A (en) 1981-01-30
CH618306A5 (en) 1980-07-15
NL7808262A (en) 1979-02-27

Similar Documents

Publication Publication Date Title
JPS53136798A (en) Ion beam bombardment device
MY8500787A (en) Deflecting device for cathode ray-tube
JPS5467379A (en) Spattering etching device
IT7819002A0 (en) STRESS ELIMINATING DEVICE FOR A CABLE.
IT7826488A0 (en) CONTROL DEVICE FOR A DENTAL EQUIPMENT.
IL53980A0 (en) An arrangement for discriminating speech signals
JPS5458310A (en) Deflecting yoke
JPS5466947A (en) Airrtype powderrflow deflecting apparatus
GB2010644B (en) Apparatus for cancelling an undesired signal from a desired signal
DE2861836D1 (en) A moving-coil pickup
IL51936A (en) Diaphragm pump actuated by vapours
JPS5383522A (en) Deflecting yoke
IL55411A0 (en) An arragement for recognising pulsing d.c. signals emitted by a pulse-operated telecommunication insstallation
JPS53124078A (en) Electron beam device
JPS5443124A (en) Lead ion removal from formose
JPS53108286A (en) Etching control device
JPS53141532A (en) Horizontal deflecting circuit
AU516660B2 (en) Pickup tube control circuit
JPS5475216A (en) Adjustable deflecting circuit
JPS5452985A (en) Etching device
IT7825759A0 (en) DEVICE FOR TRANSMITTING RADIOCOMMUNICATIONS SIGNALS.
IE39772L (en) Parturition device.
JPS5361227A (en) Deflecting yoke
JPS53129067A (en) Device for forming directional reception beam
JPS53148961A (en) Device for deflecting electron beam