BE855954A - Moyens de protection electrostatique d'un appareil terminal de telecommunications - Google Patents

Moyens de protection electrostatique d'un appareil terminal de telecommunications

Info

Publication number
BE855954A
BE855954A BE178654A BE178654A BE855954A BE 855954 A BE855954 A BE 855954A BE 178654 A BE178654 A BE 178654A BE 178654 A BE178654 A BE 178654A BE 855954 A BE855954 A BE 855954A
Authority
BE
Belgium
Prior art keywords
terminal apparatus
electrostatic protection
telecommunications terminal
telecommunications
electrostatic
Prior art date
Application number
BE178654A
Other languages
English (en)
Inventor
Y A Geadah
F J Vallo
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
Publication of BE855954A publication Critical patent/BE855954A/fr

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)
BE178654A 1976-06-23 1977-06-21 Moyens de protection electrostatique d'un appareil terminal de telecommunications BE855954A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA255,533A CA1036280A (fr) 1976-06-23 1976-06-23 Protection electrostatique pour terminal de telecommunications

Publications (1)

Publication Number Publication Date
BE855954A true BE855954A (fr) 1977-12-21

Family

ID=4106269

Family Applications (1)

Application Number Title Priority Date Filing Date
BE178654A BE855954A (fr) 1976-06-23 1977-06-21 Moyens de protection electrostatique d'un appareil terminal de telecommunications

Country Status (5)

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

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
GB1550758A (en) 1979-08-22
DE2718806A1 (de) 1978-01-05
JPS531A (en) 1978-01-05
DE2718806C2 (de) 1986-07-03
CA1036280A (fr) 1978-08-08

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: NORTHERN TELECOM LTD

Effective date: 19900630