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 (de)
DE (1) DE2248422C3 (de)
ES (1) ES408344A1 (de)
FR (1) FR2159854A5 (de)
IT (1) IT946045B (de)
NL (1) NL7214389A (de)
ZA (1) ZA723830B (de)

Also Published As

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

Similar Documents

Publication Publication Date Title
US3317675A (en) Automatic telecommunication systems
GB1068227A (en) Improvements in or relating to switching networks for use in telecommunications installations
ES408344A1 (es) Perfeccionamientos en las centrales telefonicas.
JPS5654158A (en) Control system for call waiting
ES324839A1 (es) Disposicion de circuito para instalaciones de enlace de telecomunicaciones, particularmente para instalaciones telefonicas, con campos de acoplamiento.
ES324838A1 (es) Disposicion de circuito para instalaciones de enlace de telecomunicaciones, particularmente para instalaciones telefonicas con campos de acoplamiento.
ES400030A1 (es) Mejoras en los sistemas multiples por division en el tiem- po.
ES444749A1 (es) Un dispositivo de conmutacion en el que los reles estan co- locados segun una configuracion de coordenadas.
GB468735A (en) Apparatus and method for remedying crosstalk
GB1165526A (en) Improvements in or relating to Automatic Telephone Exchanges
ES325683A1 (es) Disposicion de circuito para instalaciones de enlace de telecomunicaciones, particularmente para instalaciones de enlace telefonicas.
FR2266408A1 (en) Computer controlled switching network - makes four-wire connections and has an input, an intermediate and output switching stages
GB1222890A (en) Electronically controlled telephone switching system
AT257701B (de) Schaltungsanordnung für Fernmelde-, insbesondere Fernsprechanlagen mit Zweieranschlüssen
GB1340268A (en) Tdm telecommunications exchange systems
GB1065902A (en) Improvements to selection systems for circuits or electrical equipments
AT281128B (de) Schaltungsanordnung für Fernmeldevermittlungsanlagen, insbesondere Fernsprechnebenstellenanlagen
ES388355A1 (es) Sistema de comunicaciones.
GB1122142A (en) Improvements in or relating to automatic telephone and like systems
FR2224926A1 (en) Transformer tap changer - economises contacts by using same rail for odd and even taps
GB1085958A (en) Automatic switching system
ES408341A1 (es) Perfeccionamientos en las centrales telefonicas.
YU34349B (en) Circuit arrangement for telecommunication installations, especially for telephone exchanges with crossed-fieldwise built control device
GB1198469A (en) Circuit Arrangements for Controlling the Setting-up of Connections
GB586016A (en) Improvements in and relating to telephone exchange apparatus