GB1509399A - Calling and intercoupling arrangement for telecommunication systems - Google Patents

Calling and intercoupling arrangement for telecommunication systems

Info

Publication number
GB1509399A
GB1509399A GB43177/75A GB4317775A GB1509399A GB 1509399 A GB1509399 A GB 1509399A GB 43177/75 A GB43177/75 A GB 43177/75A GB 4317775 A GB4317775 A GB 4317775A GB 1509399 A GB1509399 A GB 1509399A
Authority
GB
United Kingdom
Prior art keywords
line
signal
connection unit
code
dialling
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
GB43177/75A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1509399A publication Critical patent/GB1509399A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M13/00—Party-line systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
GB43177/75A 1974-10-23 1975-10-21 Calling and intercoupling arrangement for telecommunication systems Expired GB1509399A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK554074A DK554074A (da) 1974-10-23 1974-10-23 Opkalds- og sammenstillingsprincip for telefonapparater, samtaleanleg og lignende med eller uden forbindelse til det offentlige telefonnet

Publications (1)

Publication Number Publication Date
GB1509399A true GB1509399A (en) 1978-05-04

Family

ID=8143320

Family Applications (1)

Application Number Title Priority Date Filing Date
GB43177/75A Expired GB1509399A (en) 1974-10-23 1975-10-21 Calling and intercoupling arrangement for telecommunication systems

Country Status (4)

Country Link
DK (1) DK554074A (cg-RX-API-DMAC10.html)
FR (1) FR2290115A1 (cg-RX-API-DMAC10.html)
GB (1) GB1509399A (cg-RX-API-DMAC10.html)
SE (1) SE7511736L (cg-RX-API-DMAC10.html)

Also Published As

Publication number Publication date
SE7511736L (sv) 1976-04-26
FR2290115A1 (fr) 1976-05-28
DK554074A (da) 1976-04-24
FR2290115B3 (cg-RX-API-DMAC10.html) 1978-07-28

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee