CH554624A - Central telephonique automatique semi-electronique. - Google Patents

Central telephonique automatique semi-electronique.

Info

Publication number
CH554624A
CH554624A CH1871171A CH1871171A CH554624A CH 554624 A CH554624 A CH 554624A CH 1871171 A CH1871171 A CH 1871171A CH 1871171 A CH1871171 A CH 1871171A CH 554624 A CH554624 A CH 554624A
Authority
CH
Switzerland
Prior art keywords
telephonique
electronique
automatique
semi
central
Prior art date
Application number
CH1871171A
Other languages
German (de)
English (en)
Original Assignee
Int Standard Electric Corp
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 Int Standard Electric Corp filed Critical Int Standard Electric Corp
Publication of CH554624A publication Critical patent/CH554624A/xx

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M3/00Automatic or semi-automatic exchanges
    • H04M3/22Arrangements for supervision, monitoring or testing
    • H04M3/2272Subscriber 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)
CH1871171A 1970-12-23 1971-12-22 Central telephonique automatique semi-electronique. CH554624A (de)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
CH554624A true CH554624A (de) 1974-09-30

Family

ID=9066266

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1871171A CH554624A (de) 1970-12-23 1971-12-22 Central telephonique automatique semi-electronique.

Country Status (14)

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

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
NO136386C (no) 1977-08-31
AU3645571A (en) 1973-06-07
SE369263B (enrdf_load_stackoverflow) 1974-08-12
FR2119188A5 (enrdf_load_stackoverflow) 1972-08-04
NO136386B (enrdf_load_stackoverflow) 1977-05-16
AU464484B2 (en) 1975-08-28
BE777084A (fr) 1972-06-22
ES398234A1 (es) 1975-03-16
CA938040A (en) 1973-12-04
NL7117638A (enrdf_load_stackoverflow) 1972-06-27
DE2162964A1 (de) 1972-07-13
IT944014B (it) 1973-04-20
BR7108538D0 (pt) 1973-05-31
SU584819A3 (ru) 1977-12-15
AT315249B (de) 1974-05-10
GB1355129A (en) 1974-06-05
DE2162964B2 (de) 1976-01-02

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Legal Events

Date Code Title Description
PL Patent ceased