SE331703B - - Google Patents

Info

Publication number
SE331703B
SE331703B SE1579564A SE1579564A SE331703B SE 331703 B SE331703 B SE 331703B SE 1579564 A SE1579564 A SE 1579564A SE 1579564 A SE1579564 A SE 1579564A SE 331703 B SE331703 B SE 331703B
Authority
SE
Sweden
Prior art keywords
jan
signals
checking
checking signals
impulsing
Prior art date
Application number
SE1579564A
Inventor
W Hackenberg
L Gasser
Original Assignee
Standard Radio & Telefon
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 Standard Radio & Telefon filed Critical Standard Radio & Telefon
Publication of SE331703B publication Critical patent/SE331703B/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Telephonic Communication Services (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Telephone Function (AREA)
  • Interface Circuits In Exchanges (AREA)

Abstract

1,043,072. Automatic exchange systems. STANDARD TELEPHONES & CABLES Ltd. Jan. 8, 1965 [Jan. 9, 1964], No. 961/65. Heading H4K. In a system employing register-senders, checking signals are sent back to the calling subscriber concurrently with the emission of routing signals. Either DC or VF impulsing may be used, and in the latter case a separate generator may be provided for the checking signals.
SE1579564A 1964-01-09 1964-12-29 SE331703B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEST21534A DE1202343B (en) 1964-01-09 1964-01-09 Circuit arrangement for dialing devices in telephone register systems

Publications (1)

Publication Number Publication Date
SE331703B true SE331703B (en) 1971-01-11

Family

ID=7459042

Family Applications (1)

Application Number Title Priority Date Filing Date
SE1579564A SE331703B (en) 1964-01-09 1964-12-29

Country Status (7)

Country Link
AT (1) AT263092B (en)
DE (1) DE1202343B (en)
FI (1) FI45194C (en)
FR (1) FR1420173A (en)
GB (1) GB1043072A (en)
NL (1) NL6500296A (en)
SE (1) SE331703B (en)

Also Published As

Publication number Publication date
FI45194C (en) 1972-04-10
DE1202343B (en) 1965-10-07
NL6500296A (en) 1965-07-12
AT263092B (en) 1968-07-10
FI45194B (en) 1971-12-31
FR1420173A (en) 1965-12-03
GB1043072A (en) 1966-09-21

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