GB1238103A - - Google Patents

Info

Publication number
GB1238103A
GB1238103A GB1238103DA GB1238103A GB 1238103 A GB1238103 A GB 1238103A GB 1238103D A GB1238103D A GB 1238103DA GB 1238103 A GB1238103 A GB 1238103A
Authority
GB
United Kingdom
Prior art keywords
sub
signal
lines
rectifiers
station
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
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 GB1238103A publication Critical patent/GB1238103A/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
    • H04M1/30—Devices which can set up and transmit only one digit at a time
    • 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
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/002—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
GB1238103D 1968-06-07 1969-06-05 Expired GB1238103A (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT543668A AT308846B (de) 1968-06-07 1968-06-07 Schaltungsanordnung für fernmeldetechnische Einrichtungen

Publications (1)

Publication Number Publication Date
GB1238103A true GB1238103A (enrdf_load_stackoverflow) 1971-07-07

Family

ID=3575776

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1238103D Expired GB1238103A (enrdf_load_stackoverflow) 1968-06-07 1969-06-05

Country Status (7)

Country Link
AT (1) AT308846B (enrdf_load_stackoverflow)
BE (1) BE734136A (enrdf_load_stackoverflow)
DE (1) DE1927721A1 (enrdf_load_stackoverflow)
FR (1) FR2010366A1 (enrdf_load_stackoverflow)
GB (1) GB1238103A (enrdf_load_stackoverflow)
NL (1) NL6908704A (enrdf_load_stackoverflow)
SE (1) SE346440B (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2183968A (en) * 1985-11-27 1987-06-10 Rauland Corp Intercommunication system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2183968A (en) * 1985-11-27 1987-06-10 Rauland Corp Intercommunication system
US4744103A (en) * 1985-11-27 1988-05-10 Rauland-Borg Corporation Computer controlled multi-link communication system
GB2183968B (en) * 1985-11-27 1989-11-08 Rauland Corp Computer controlled multi-link communication system

Also Published As

Publication number Publication date
SE346440B (enrdf_load_stackoverflow) 1972-07-03
DE1927721A1 (de) 1969-12-11
BE734136A (enrdf_load_stackoverflow) 1969-12-08
NL6908704A (enrdf_load_stackoverflow) 1969-12-09
AT308846B (de) 1973-07-25
FR2010366A1 (enrdf_load_stackoverflow) 1970-02-13

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Legal Events

Date Code Title Description
PS Patent sealed
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PLNP Patent lapsed through nonpayment of renewal fees