GB650957A - Improvements in or relating to interconnection apparatus for telephone systems - Google Patents

Improvements in or relating to interconnection apparatus for telephone systems

Info

Publication number
GB650957A
GB650957A GB33439/47A GB3343947A GB650957A GB 650957 A GB650957 A GB 650957A GB 33439/47 A GB33439/47 A GB 33439/47A GB 3343947 A GB3343947 A GB 3343947A GB 650957 A GB650957 A GB 650957A
Authority
GB
United Kingdom
Prior art keywords
pawl
relating
dialled
telephone systems
interconnection apparatus
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
GB33439/47A
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.)
Telephones Calembert & Descham
Original Assignee
Telephones Calembert & Descham
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 Telephones Calembert & Descham filed Critical Telephones Calembert & Descham
Publication of GB650957A publication Critical patent/GB650957A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/002—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/52—Arrangements wherein a dial or the like is mechanically coupled to a line selector

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
GB33439/47A 1945-01-17 1947-12-18 Improvements in or relating to interconnection apparatus for telephone systems Expired GB650957A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR994339T 1945-01-17

Publications (1)

Publication Number Publication Date
GB650957A true GB650957A (en) 1951-03-07

Family

ID=9556329

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33439/47A Expired GB650957A (en) 1945-01-17 1947-12-18 Improvements in or relating to interconnection apparatus for telephone systems

Country Status (5)

Country Link
US (1) US2622154A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
BE (1) BE462287A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CH (1) CH269952A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR994339A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB650957A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE526806A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1954-01-19
DE954797C (de) * 1954-01-19 1956-12-20 Allg Telefon Fabrik G M B H Waehl- und Rufeinrichtung fuer Fernmeldeanlagen
DE1006014B (de) * 1954-03-24 1957-04-11 Allg Telefon Fabrik G M B H Schaltungsanordnung fuer Fernsprechanlagen, deren Teilnehmerleitungen wahlweise an eine Reihenanlage oder an eine Linienwaehleranlage angeschlossen werden koennen
DE973103C (de) * 1954-05-29 1959-12-03 Richard Bosse & Co Fernsprecheinrichtung mit Waehlscheibe und Linienwaehler
US2936341A (en) * 1957-03-04 1960-05-10 North Electric Co Multiline telephone substation set

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1191210A (en) * 1909-03-30 1916-07-18 Automatic Electric Co Telephone intercommunicating and supervisory system.
US1221124A (en) * 1916-09-11 1917-04-03 Western Electric Co Machine-switching telephone-exchange system.
US1569450A (en) * 1922-01-03 1926-01-12 Kellogg Switchboard & Supply Automatic switch
NL39596C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1933-03-29

Also Published As

Publication number Publication date
CH269952A (fr) 1950-07-31
BE462287A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
US2622154A (en) 1952-12-16
FR994339A (fr) 1951-11-15

Similar Documents

Publication Publication Date Title
IE37408L (en) Telephone subscriber's set.
GB650957A (en) Improvements in or relating to interconnection apparatus for telephone systems
GB826313A (en) Electric toggle switches
GB1106020A (en) Mercury switch
JPS51124385A (en) Complementary type mis semiconductor integrated circuit
GB596444A (en) Telecommunication switching systems
JPS5283102A (en) Abbreviated dialing unit
GB1170076A (en) A Device for preventing the use of a Telephone when Dialling a Number which begins with the Digit 0
GB921231A (en) Switch-operating push-buttons
GB531693A (en) Improvements in impulse senders for use in telephone or like systems
GB593050A (en) Improvements relating to automatic telephone systems
GB860865A (en) Radio rescue apparatus
GB890236A (en) Improvements in or relating to cross-bar switches
GB794247A (en) Improvements in or relating to telephone dial mechanisms
JPS51129266A (en) Electronic watch
GB935835A (en) Improvements in fluid pressure-operated electric switches
GB693586A (en) Improvements in or relating to means for facilitating the detection of errors in symbol groups
GB852753A (en) Improvements in or relating to telephone dials
FR2258753A1 (en) Telephone STD monitoring device - prevents prohibited dialling of trunk calls while allowing local calls from office, shop etc.
GB925007A (en) Improvements in or relating to telephone dials
GB843867A (en) Improvements relating to press-button electric switches
JPS52143646A (en) Call registering device for elevator
JPS5251803A (en) Toll call limiting device
GB827168A (en) Improvements in or relating to dolly-operated electric switches
GB794876A (en) Counter