GB1302153A - - Google Patents

Info

Publication number
GB1302153A
GB1302153A GB1714671A GB1714671A GB1302153A GB 1302153 A GB1302153 A GB 1302153A GB 1714671 A GB1714671 A GB 1714671A GB 1714671 A GB1714671 A GB 1714671A GB 1302153 A GB1302153 A GB 1302153A
Authority
GB
United Kingdom
Prior art keywords
signal
junctor
relay
transmitted
diode
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
GB1714671A
Other languages
English (en)
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 filed Critical
Publication of GB1302153A publication Critical patent/GB1302153A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges
    • 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)
  • Monitoring And Testing Of Transmission In General (AREA)
GB1714671A 1970-04-21 1971-04-19 Expired GB1302153A (enExample)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7014361A FR2088667A5 (enExample) 1970-04-21 1970-04-21

Publications (1)

Publication Number Publication Date
GB1302153A true GB1302153A (enExample) 1973-01-04

Family

ID=9054307

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1714671A Expired GB1302153A (enExample) 1970-04-21 1971-04-19

Country Status (4)

Country Link
ES (1) ES390370A1 (enExample)
FR (1) FR2088667A5 (enExample)
GB (1) GB1302153A (enExample)
ZA (1) ZA712398B (enExample)

Also Published As

Publication number Publication date
ES390370A1 (es) 1973-06-01
FR2088667A5 (enExample) 1972-01-07
ZA712398B (en) 1971-12-29

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees