GB744125A - Improvements in or relating to telecommunication systems - Google Patents

Improvements in or relating to telecommunication systems

Info

Publication number
GB744125A
GB744125A GB1353850A GB1353850A GB744125A GB 744125 A GB744125 A GB 744125A GB 1353850 A GB1353850 A GB 1353850A GB 1353850 A GB1353850 A GB 1353850A GB 744125 A GB744125 A GB 744125A
Authority
GB
United Kingdom
Prior art keywords
relay
line
lines
pbx
busy
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
GB1353850A
Other languages
English (en)
Inventor
Richard Mercer
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.)
Automatic Telephone and Electric Co Ltd
Original Assignee
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 BE503647D priority Critical patent/BE503647A/xx
Application filed by Automatic Telephone and Electric Co Ltd filed Critical Automatic Telephone and Electric Co Ltd
Priority to GB1353850A priority patent/GB744125A/en
Priority to DEM9696A priority patent/DE877625C/de
Publication of GB744125A publication Critical patent/GB744125A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
GB1353850A 1950-05-31 1950-05-31 Improvements in or relating to telecommunication systems Expired GB744125A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BE503647D BE503647A (es) 1950-05-31
GB1353850A GB744125A (en) 1950-05-31 1950-05-31 Improvements in or relating to telecommunication systems
DEM9696A DE877625C (de) 1950-05-31 1951-06-01 Fernmelde-, insbesondere Fernsprechanlage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1353850A GB744125A (en) 1950-05-31 1950-05-31 Improvements in or relating to telecommunication systems

Publications (1)

Publication Number Publication Date
GB744125A true GB744125A (en) 1956-02-01

Family

ID=10024791

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1353850A Expired GB744125A (en) 1950-05-31 1950-05-31 Improvements in or relating to telecommunication systems

Country Status (3)

Country Link
BE (1) BE503647A (es)
DE (1) DE877625C (es)
GB (1) GB744125A (es)

Also Published As

Publication number Publication date
DE877625C (de) 1953-05-26
BE503647A (es)

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