GB1355129A - Individual telephone line equipment - Google Patents

Individual telephone line equipment

Info

Publication number
GB1355129A
GB1355129A GB5842971A GB5842971A GB1355129A GB 1355129 A GB1355129 A GB 1355129A GB 5842971 A GB5842971 A GB 5842971A GB 5842971 A GB5842971 A GB 5842971A GB 1355129 A GB1355129 A GB 1355129A
Authority
GB
United Kingdom
Prior art keywords
line
pulse
point
output
earth
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
GB5842971A
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.)
International Standard Electric Corp
Original Assignee
International 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 International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of GB1355129A publication Critical patent/GB1355129A/en
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)
GB5842971A 1970-12-23 1971-12-16 Individual telephone line equipment Expired GB1355129A (en)

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
GB1355129A true GB1355129A (en) 1974-06-05

Family

ID=9066266

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5842971A Expired GB1355129A (en) 1970-12-23 1971-12-16 Individual telephone line equipment

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
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
ES398234A1 (es) 1975-03-16
BE777084A (fr) 1972-06-22
BR7108538D0 (pt) 1973-05-31
DE2162964A1 (de) 1972-07-13
CA938040A (en) 1973-12-04

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Legal Events

Date Code Title Description
PS Patent sealed
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee