GB1044114A - Improvements in and relating to devices for use in an automatic signalling system, particularly a telephone system - Google Patents

Improvements in and relating to devices for use in an automatic signalling system, particularly a telephone system

Info

Publication number
GB1044114A
GB1044114A GB2918/65A GB291865A GB1044114A GB 1044114 A GB1044114 A GB 1044114A GB 2918/65 A GB2918/65 A GB 2918/65A GB 291865 A GB291865 A GB 291865A GB 1044114 A GB1044114 A GB 1044114A
Authority
GB
United Kingdom
Prior art keywords
relay
transistor
capacitors
capacitor
resistances
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
GB2918/65A
Other languages
English (en)
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries Ltd
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 Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1044114A publication Critical patent/GB1044114A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/515—Devices for calling a subscriber by generating or selecting signals other than trains of pulses of similar shape, or signals other than currents of one or more different frequencies, e.g. generation of dc signals of alternating polarity, coded pulses or impedance dialling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13176—Common channel signaling, CCS7

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Devices For Supply Of Signal Current (AREA)
GB2918/65A 1964-01-24 1965-01-22 Improvements in and relating to devices for use in an automatic signalling system, particularly a telephone system Expired GB1044114A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6400598A NL6400598A (ro) 1964-01-24 1964-01-24

Publications (1)

Publication Number Publication Date
GB1044114A true GB1044114A (en) 1966-09-28

Family

ID=19789111

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2918/65A Expired GB1044114A (en) 1964-01-24 1965-01-22 Improvements in and relating to devices for use in an automatic signalling system, particularly a telephone system

Country Status (7)

Country Link
JP (1) JPS4210341B1 (ro)
BE (1) BE658794A (ro)
DE (2) DE1286139B (ro)
FR (1) FR1422642A (ro)
GB (1) GB1044114A (ro)
NL (1) NL6400598A (ro)
SE (1) SE313347B (ro)

Also Published As

Publication number Publication date
SE313347B (ro) 1969-08-11
NL6400598A (ro) 1965-07-26
DE1286139B (de) 1969-01-02
BE658794A (ro) 1965-07-26
FR1422642A (fr) 1965-12-24
JPS4210341B1 (ro) 1967-06-03
DE1284474B (de) 1968-12-05

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