CA1036280A - Electrostatic protection for a telecommunications terminal apparatus - Google Patents

Electrostatic protection for a telecommunications terminal apparatus

Info

Publication number
CA1036280A
CA1036280A CA255,533A CA255533A CA1036280A CA 1036280 A CA1036280 A CA 1036280A CA 255533 A CA255533 A CA 255533A CA 1036280 A CA1036280 A CA 1036280A
Authority
CA
Canada
Prior art keywords
terminal apparatus
electrostatic protection
telecommunications terminal
telecommunications
electrostatic
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
CA255,533A
Other languages
English (en)
French (fr)
Inventor
Youssef A. Geadah
Frank J. Vallo
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.)
Nortel Networks Ltd
Original Assignee
Northern Telecom 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
Application filed by Northern Telecom Ltd filed Critical Northern Telecom Ltd
Priority to CA255,533A priority Critical patent/CA1036280A/en
Priority to GB1463177A priority patent/GB1550758A/en
Priority to DE19772718806 priority patent/DE2718806C2/de
Priority to JP6740777A priority patent/JPS531A/ja
Priority to BE178654A priority patent/BE855954A/xx
Application granted granted Critical
Publication of CA1036280A publication Critical patent/CA1036280A/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
    • H04M1/738—Interface circuits for coupling substations to external telephone lines
    • H04M1/74—Interface circuits for coupling substations to external telephone lines with means for reducing interference; with means for reducing effects due to line faults
    • H04M1/745—Protection devices or circuits for voltages surges on the line

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Elimination Of Static Electricity (AREA)
  • Telephone Set Structure (AREA)
CA255,533A 1976-06-23 1976-06-23 Electrostatic protection for a telecommunications terminal apparatus Expired CA1036280A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CA255,533A CA1036280A (en) 1976-06-23 1976-06-23 Electrostatic protection for a telecommunications terminal apparatus
GB1463177A GB1550758A (en) 1976-06-23 1977-04-06 Electrostatic protection for a telecommunications terminal apparatus
DE19772718806 DE2718806C2 (de) 1976-06-23 1977-04-27 Elektrostatische Schutzvorrichtung für ein Fernmeldeendstellengerät
JP6740777A JPS531A (en) 1976-06-23 1977-06-09 Terminal device for telecommunication
BE178654A BE855954A (fr) 1976-06-23 1977-06-21 Moyens de protection electrostatique d'un appareil terminal de telecommunications

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA255,533A CA1036280A (en) 1976-06-23 1976-06-23 Electrostatic protection for a telecommunications terminal apparatus

Publications (1)

Publication Number Publication Date
CA1036280A true CA1036280A (en) 1978-08-08

Family

ID=4106269

Family Applications (1)

Application Number Title Priority Date Filing Date
CA255,533A Expired CA1036280A (en) 1976-06-23 1976-06-23 Electrostatic protection for a telecommunications terminal apparatus

Country Status (5)

Country Link
JP (1) JPS531A (ja)
BE (1) BE855954A (ja)
CA (1) CA1036280A (ja)
DE (1) DE2718806C2 (ja)
GB (1) GB1550758A (ja)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5929242Y2 (ja) * 1983-07-14 1984-08-22 オムロン株式会社 利用者操作装置
US4822828A (en) * 1987-11-23 1989-04-18 Hoechst Celanese Corporation Radiation curable coating composition based on a silica/vinyl-functional silanol dispersion
JP2872250B2 (ja) * 1988-09-26 1999-03-17 東芝ライテック株式会社 ハンドセット型通話器

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3838229A (en) * 1973-04-16 1974-09-24 Bell Northern Research Ltd Telephone sets and removable covers therefore
US3936602A (en) * 1974-10-23 1976-02-03 Northern Electric Company Limited Full duplex data transmission system using two speeds of diphase signal for simplified sync

Also Published As

Publication number Publication date
JPS531A (en) 1978-01-05
BE855954A (fr) 1977-12-21
DE2718806C2 (de) 1986-07-03
GB1550758A (en) 1979-08-22
DE2718806A1 (de) 1978-01-05

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