ES408344A1 - Perfeccionamientos en las centrales telefonicas. - Google Patents

Perfeccionamientos en las centrales telefonicas.

Info

Publication number
ES408344A1
ES408344A1 ES408344A ES408344A ES408344A1 ES 408344 A1 ES408344 A1 ES 408344A1 ES 408344 A ES408344 A ES 408344A ES 408344 A ES408344 A ES 408344A ES 408344 A1 ES408344 A1 ES 408344A1
Authority
ES
Spain
Prior art keywords
conductors
relays
individually
group
translation
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
ES408344A
Other languages
English (en)
Spanish (es)
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.)
Italtel SpA
Original Assignee
Societa Italiana Telecomunicazioni Siemens SpA
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 Societa Italiana Telecomunicazioni Siemens SpA filed Critical Societa Italiana Telecomunicazioni Siemens SpA
Publication of ES408344A1 publication Critical patent/ES408344A1/es
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0008—Selecting arrangements using relay selectors in the switching stages

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
  • Telephonic Communication Services (AREA)
  • Exchange Systems With Centralized Control (AREA)
ES408344A 1971-11-08 1972-10-28 Perfeccionamientos en las centrales telefonicas. Expired ES408344A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT30828/71A IT946045B (it) 1971-11-08 1971-11-08 Apparecchiatura per il collegamen to reciproco selettivo bidireziona le di utenti interni o di utenti esterni in una centrale telefonica

Publications (1)

Publication Number Publication Date
ES408344A1 true ES408344A1 (es) 1975-11-01

Family

ID=11232342

Family Applications (1)

Application Number Title Priority Date Filing Date
ES408344A Expired ES408344A1 (es) 1971-11-08 1972-10-28 Perfeccionamientos en las centrales telefonicas.

Country Status (7)

Country Link
BE (1) BE781881A (fr)
DE (1) DE2248422C3 (fr)
ES (1) ES408344A1 (fr)
FR (1) FR2159854A5 (fr)
IT (1) IT946045B (fr)
NL (1) NL7214389A (fr)
ZA (1) ZA723830B (fr)

Also Published As

Publication number Publication date
NL7214389A (fr) 1973-05-10
IT946045B (it) 1973-05-21
FR2159854A5 (fr) 1973-06-22
DE2248422A1 (de) 1973-05-24
DE2248422B2 (de) 1978-08-10
ZA723830B (en) 1973-03-28
BE781881A (fr) 1972-07-31
DE2248422C3 (de) 1979-04-12

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