ES431772A1 - Un metodo de senalizacion para sistemas de intercomunica- cion telefonica en serie. - Google Patents

Un metodo de senalizacion para sistemas de intercomunica- cion telefonica en serie.

Info

Publication number
ES431772A1
ES431772A1 ES431772A ES431772A ES431772A1 ES 431772 A1 ES431772 A1 ES 431772A1 ES 431772 A ES431772 A ES 431772A ES 431772 A ES431772 A ES 431772A ES 431772 A1 ES431772 A1 ES 431772A1
Authority
ES
Spain
Prior art keywords
central station
link
devices
translation
signaling
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
ES431772A
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.)
Nokia Spain SA
Original Assignee
Alcatel Espana SA
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 Alcatel Espana SA filed Critical Alcatel Espana SA
Publication of ES431772A1 publication Critical patent/ES431772A1/es
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • H04M9/005—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems with subscriber controlled access to an exchange line

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
ES431772A 1973-11-09 1974-11-08 Un metodo de senalizacion para sistemas de intercomunica- cion telefonica en serie. Expired ES431772A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732356095 DE2356095C3 (de) 1973-11-09 1973-11-09 Signalverfahren für Fernsprechreihenanlagen

Publications (1)

Publication Number Publication Date
ES431772A1 true ES431772A1 (es) 1976-09-01

Family

ID=5897687

Family Applications (1)

Application Number Title Priority Date Filing Date
ES431772A Expired ES431772A1 (es) 1973-11-09 1974-11-08 Un metodo de senalizacion para sistemas de intercomunica- cion telefonica en serie.

Country Status (8)

Country Link
AU (1) AU7490474A (es)
BE (1) BE821977R (es)
DE (1) DE2356095C3 (es)
DK (1) DK577074A (es)
ES (1) ES431772A1 (es)
FR (1) FR2251141B1 (es)
IT (1) IT1025484B (es)
NL (1) NL7414330A (es)

Also Published As

Publication number Publication date
AU7490474A (en) 1976-05-06
BE821977R (nl) 1975-05-09
IT1025484B (it) 1978-08-10
FR2251141A1 (es) 1975-06-06
DK577074A (es) 1975-07-07
FR2251141B1 (es) 1978-09-15
DE2356095C3 (de) 1979-06-13
DE2356095B2 (de) 1978-10-19
DE2356095A1 (de) 1975-05-28
NL7414330A (nl) 1975-05-13

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