ES398234A1 - Mejoras en circuitos telefonicos de linea individual. - Google Patents

Mejoras en circuitos telefonicos de linea individual.

Info

Publication number
ES398234A1
ES398234A1 ES398234A ES398234A ES398234A1 ES 398234 A1 ES398234 A1 ES 398234A1 ES 398234 A ES398234 A ES 398234A ES 398234 A ES398234 A ES 398234A ES 398234 A1 ES398234 A1 ES 398234A1
Authority
ES
Spain
Prior art keywords
line
supply
circuit
potential
terminal
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
ES398234A
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.)
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 ES398234A1 publication Critical patent/ES398234A1/es
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/2272—Subscriber line supervision circuits, e.g. call detection circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Interface Circuits In Exchanges (AREA)
ES398234A 1970-12-23 1971-12-22 Mejoras en circuitos telefonicos de linea individual. Expired ES398234A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7046461A FR2119188A5 (enExample) 1970-12-23 1970-12-23

Publications (1)

Publication Number Publication Date
ES398234A1 true ES398234A1 (es) 1975-03-16

Family

ID=9066266

Family Applications (1)

Application Number Title Priority Date Filing Date
ES398234A Expired ES398234A1 (es) 1970-12-23 1971-12-22 Mejoras en circuitos telefonicos de linea individual.

Country Status (14)

Country Link
AT (1) AT315249B (enExample)
AU (1) AU464484B2 (enExample)
BE (1) BE777084A (enExample)
BR (1) BR7108538D0 (enExample)
CA (1) CA938040A (enExample)
CH (1) CH554624A (enExample)
ES (1) ES398234A1 (enExample)
FR (1) FR2119188A5 (enExample)
GB (1) GB1355129A (enExample)
IT (1) IT944014B (enExample)
NL (1) NL7117638A (enExample)
NO (1) NO136386C (enExample)
SE (1) SE369263B (enExample)
SU (1) SU584819A3 (enExample)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA74205B (en) * 1973-02-12 1974-11-27 Int Standard Electric Corp Line condition signalling system

Also Published As

Publication number Publication date
IT944014B (it) 1973-04-20
AU464484B2 (en) 1975-08-28
SE369263B (enExample) 1974-08-12
NO136386B (enExample) 1977-05-16
SU584819A3 (ru) 1977-12-15
GB1355129A (en) 1974-06-05
AT315249B (de) 1974-05-10
NL7117638A (enExample) 1972-06-27
AU3645571A (en) 1973-06-07
NO136386C (no) 1977-08-31
CH554624A (de) 1974-09-30
FR2119188A5 (enExample) 1972-08-04
DE2162964B2 (de) 1976-01-02
BE777084A (fr) 1972-06-22
BR7108538D0 (pt) 1973-05-31
DE2162964A1 (de) 1972-07-13
CA938040A (en) 1973-12-04

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