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GB863642A - Improvements in or relating to telephone sub-sets - Google Patents

Improvements in or relating to telephone sub-sets

Info

Publication number
GB863642A
GB863642A GB1492157A GB1492157A GB863642A GB 863642 A GB863642 A GB 863642A GB 1492157 A GB1492157 A GB 1492157A GB 1492157 A GB1492157 A GB 1492157A GB 863642 A GB863642 A GB 863642A
Authority
GB
United Kingdom
Prior art keywords
blocking capacitor
relating
sets
receiver
series
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
GB1492157A
Inventor
Anthony Crisp Beadle
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.)
STC PLC
Original Assignee
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 BE510952D priority Critical patent/BE510952A/xx
Priority to GB976751A priority patent/GB706785A/en
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB1492157A priority patent/GB863642A/en
Publication of GB863642A publication Critical patent/GB863642A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/58—Anti-side-tone circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

863,642. Substation circuits. STANDARD TELEPHONES & CABLES Ltd. April 3, 1958 [May 10, 1957], No. 14921/57. Addition to 706,785. Class 40 (4). A substation having a non-linear shunt 10, 11 for the receiver 12 as described in the parent Specification has a blocking capacitor 4 connected between the line terminals, and a linebalancing network 1, 2, 3 connected across the blocking capacitor 4. The receiver 12 is connected across a balanced bridge 5, 8, 10, 11, Fig. 1, or a simplified version 15, 10, 11, Fig. 2, in series with a limiting resistor 16. A ringer 14 is connected across the line terminals in series with the blocking capacitor 4.
GB1492157A 1957-05-10 1957-05-10 Improvements in or relating to telephone sub-sets Expired GB863642A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BE510952D BE510952A (en) 1957-05-10
GB976751A GB706785A (en) 1957-05-10 1951-04-26 Improvements in or relating to telephone subsets
GB1492157A GB863642A (en) 1957-05-10 1957-05-10 Improvements in or relating to telephone sub-sets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1492157A GB863642A (en) 1957-05-10 1957-05-10 Improvements in or relating to telephone sub-sets

Publications (1)

Publication Number Publication Date
GB863642A true GB863642A (en) 1961-03-22

Family

ID=10049919

Family Applications (2)

Application Number Title Priority Date Filing Date
GB976751A Expired GB706785A (en) 1957-05-10 1951-04-26 Improvements in or relating to telephone subsets
GB1492157A Expired GB863642A (en) 1957-05-10 1957-05-10 Improvements in or relating to telephone sub-sets

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB976751A Expired GB706785A (en) 1957-05-10 1951-04-26 Improvements in or relating to telephone subsets

Country Status (2)

Country Link
BE (1) BE510952A (en)
GB (2) GB706785A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL269902A (en) * 1960-10-07

Also Published As

Publication number Publication date
BE510952A (en)
GB706785A (en) 1954-04-07

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