GB554136A - Improvements in or relating to telephone systems - Google Patents

Improvements in or relating to telephone systems

Info

Publication number
GB554136A
GB554136A GB16334/41A GB1633441A GB554136A GB 554136 A GB554136 A GB 554136A GB 16334/41 A GB16334/41 A GB 16334/41A GB 1633441 A GB1633441 A GB 1633441A GB 554136 A GB554136 A GB 554136A
Authority
GB
United Kingdom
Prior art keywords
line
relay
calls
finder
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
GB16334/41A
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.)
SIDNEY HUGH OLIVER
Automatic Telephone and Electric Co Ltd
Original Assignee
SIDNEY HUGH OLIVER
Automatic Telephone and Electric Co Ltd
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
Priority to NL62663D priority Critical patent/NL62663C/xx
Priority to BE554136D priority patent/BE554136A/xx
Application filed by SIDNEY HUGH OLIVER, Automatic Telephone and Electric Co Ltd filed Critical SIDNEY HUGH OLIVER
Priority to GB16334/41A priority patent/GB554136A/en
Priority to US462082A priority patent/US2358185A/en
Publication of GB554136A publication Critical patent/GB554136A/en
Priority to FR933193D priority patent/FR933193A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite
    • H04Q3/62—Arrangements providing connection between main exchange and sub-exchange or satellite for connecting to private branch exchanges
    • H04Q3/625—Arrangements in the private branch exchange

Landscapes

  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Structure Of Telephone Exchanges (AREA)
GB16334/41A 1941-12-18 1941-12-18 Improvements in or relating to telephone systems Expired GB554136A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
NL62663D NL62663C (pt) 1941-12-18
BE554136D BE554136A (pt) 1941-12-18
GB16334/41A GB554136A (en) 1941-12-18 1941-12-18 Improvements in or relating to telephone systems
US462082A US2358185A (en) 1941-12-18 1942-10-15 Telephone system
FR933193D FR933193A (fr) 1941-12-18 1946-09-03 Dispositifs téléphoniques

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB16334/41A GB554136A (en) 1941-12-18 1941-12-18 Improvements in or relating to telephone systems

Publications (1)

Publication Number Publication Date
GB554136A true GB554136A (en) 1943-06-22

Family

ID=10075412

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16334/41A Expired GB554136A (en) 1941-12-18 1941-12-18 Improvements in or relating to telephone systems

Country Status (5)

Country Link
US (1) US2358185A (pt)
BE (1) BE554136A (pt)
FR (1) FR933193A (pt)
GB (1) GB554136A (pt)
NL (1) NL62663C (pt)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3176080A (en) * 1959-12-11 1965-03-30 Gen Dynamies Corp Night answering and transfer of trunk calls
DE1135055B (de) * 1961-03-07 1962-08-23 Standard Elektrik Lorenz Ag Schaltungsanordnung zur Berechtigungskennzeichnung in Fernsprech-Nebenstellenanlagen
BE622308A (pt) * 1961-09-11

Also Published As

Publication number Publication date
US2358185A (en) 1944-09-12
NL62663C (pt)
BE554136A (pt)
FR933193A (fr) 1948-04-13

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