GB597688A - Telephone systems - Google Patents

Telephone systems

Info

Publication number
GB597688A
GB597688A GB8783/44A GB878344A GB597688A GB 597688 A GB597688 A GB 597688A GB 8783/44 A GB8783/44 A GB 8783/44A GB 878344 A GB878344 A GB 878344A GB 597688 A GB597688 A GB 597688A
Authority
GB
United Kingdom
Prior art keywords
selector
switch
wire
circuit
over
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
GB8783/44A
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 GB597688A publication Critical patent/GB597688A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/08—Metering calls to called party, i.e. B-party charged for the communication
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
GB8783/44A 1941-08-21 1944-05-09 Telephone systems Expired GB597688A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL255843X 1941-08-21

Publications (1)

Publication Number Publication Date
GB597688A true GB597688A (en) 1948-02-02

Family

ID=19781301

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8783/44A Expired GB597688A (en) 1941-08-21 1944-05-09 Telephone systems

Country Status (6)

Country Link
US (1) US2440277A (enrdf_load_html_response)
BE (1) BE447417A (enrdf_load_html_response)
CH (1) CH255843A (enrdf_load_html_response)
FR (1) FR885486A (enrdf_load_html_response)
GB (1) GB597688A (enrdf_load_html_response)
NL (1) NL59752C (enrdf_load_html_response)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2535513A (en) * 1946-02-23 1950-12-26 Automatic Elect Lab Testing device for line identifying equipment
GB614177A (en) * 1946-05-25 1948-12-10 Automatic Telephone & Elect Improvements in or relating to electrical signalling systems
BE473455A (enrdf_load_html_response) * 1946-07-25
US2619545A (en) * 1947-06-13 1952-11-25 Bell Telephone Labor Inc Telephone calling line identification and recording system
US2570971A (en) * 1947-11-14 1951-10-09 Bell Telephone Labor Inc Vertical line number translator
US2535446A (en) * 1948-06-16 1950-12-26 Bell Telephone Labor Inc Carrier communication system
US2554149A (en) * 1948-07-08 1951-05-22 Bell Telephone Labor Inc Translator for calling line identification
US2879338A (en) * 1953-02-09 1959-03-24 Bell Telephone Labor Inc Identification system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1944244A (en) * 1930-12-06 1934-01-23 Bell Telephone Labor Inc Telephone system
US1846261A (en) * 1931-04-11 1932-02-23 American Telephone & Telegraph Telephone system
US1846516A (en) * 1931-06-05 1932-02-23 American Telephone & Telegraph Telephone system
US2222099A (en) * 1938-11-07 1940-11-19 Fides Ges Fur Verwaltung Und V Telephone system
BE441725A (enrdf_load_html_response) * 1939-09-21
BE477685A (enrdf_load_html_response) * 1940-09-20

Also Published As

Publication number Publication date
BE447417A (enrdf_load_html_response)
NL59752C (enrdf_load_html_response)
US2440277A (en) 1948-04-27
CH255843A (de) 1948-07-15
FR885486A (fr) 1943-09-16

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