GB378064A - Improvements in or relating to combined telegraph and telephone exchange systems - Google Patents

Improvements in or relating to combined telegraph and telephone exchange systems

Info

Publication number
GB378064A
GB378064A GB1249131A GB1249131A GB378064A GB 378064 A GB378064 A GB 378064A GB 1249131 A GB1249131 A GB 1249131A GB 1249131 A GB1249131 A GB 1249131A GB 378064 A GB378064 A GB 378064A
Authority
GB
United Kingdom
Prior art keywords
teleprinter
relay
over
line
contacts
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
GB1249131A
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.)
GEORGE LESLIE HUNT
STC PLC
Original Assignee
GEORGE LESLIE HUNT
Standard Telephone and Cables PLC
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 BE386826D priority Critical patent/BE386826A/xx
Priority to NL36740D priority patent/NL36740C/xx
Application filed by GEORGE LESLIE HUNT, Standard Telephone and Cables PLC filed Critical GEORGE LESLIE HUNT
Priority to GB1249131A priority patent/GB378064A/en
Priority to FR732444D priority patent/FR732444A/fr
Publication of GB378064A publication Critical patent/GB378064A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
GB1249131A 1931-04-28 1931-04-28 Improvements in or relating to combined telegraph and telephone exchange systems Expired GB378064A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BE386826D BE386826A (enrdf_load_stackoverflow) 1931-04-28
NL36740D NL36740C (enrdf_load_stackoverflow) 1931-04-28
GB1249131A GB378064A (en) 1931-04-28 1931-04-28 Improvements in or relating to combined telegraph and telephone exchange systems
FR732444D FR732444A (fr) 1931-04-28 1932-02-29 Perfectionnements aux systèmes pour bureaux centraux assurant des transmissions téléphoniques et télégraphiques combinées

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1249131A GB378064A (en) 1931-04-28 1931-04-28 Improvements in or relating to combined telegraph and telephone exchange systems

Publications (1)

Publication Number Publication Date
GB378064A true GB378064A (en) 1932-07-28

Family

ID=10005570

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1249131A Expired GB378064A (en) 1931-04-28 1931-04-28 Improvements in or relating to combined telegraph and telephone exchange systems

Country Status (4)

Country Link
BE (1) BE386826A (enrdf_load_stackoverflow)
FR (1) FR732444A (enrdf_load_stackoverflow)
GB (1) GB378064A (enrdf_load_stackoverflow)
NL (1) NL36740C (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
NL36740C (enrdf_load_stackoverflow)
BE386826A (enrdf_load_stackoverflow)
FR732444A (fr) 1932-09-20

Similar Documents

Publication Publication Date Title
GB553225A (en) Power line telephone system
USRE26099E (en) Telegraph signal arrangement for a telephone system
US2041964A (en) Telephone system
US3920902A (en) Off-premises station line circuit for a key telephone system
US3626101A (en) Loop extender for subscribers connected to a central office by abnormally long telephone lines
GB378064A (en) Improvements in or relating to combined telegraph and telephone exchange systems
US2133814A (en) Telephone system
US1688455A (en) Telephone signaling system
US2041933A (en) Telephone system
US2288251A (en) Automatic toll switching telephone system
US2060250A (en) Combined teleprinter and telephone system
US1632012A (en) Program-selecting circuits
US2260524A (en) Telephone system
US1337310A (en) Telephone system
US2300044A (en) Telephone subscriber's station
US2495773A (en) Alternating current telegraph system
US2081434A (en) Combination telephone and telegraph exchange system
US2306701A (en) Combined telephone and telegraph cord and attendants' circuits
US3033938A (en) Private automatic branch exchange telephone system providing transfer service
US955056A (en) Combined telephone and fire-alarm or kindred service system.
US2605347A (en) Telegraph concentration board spare communication circuit
US2094151A (en) Remote control system
US2765367A (en) Time division multiplex multi-station per line telephone system
US2254723A (en) Subscriber line circuit
US1361885A (en) Automatic telephone system