CA2140680C - Circuit de sonnerie pour telephone portatif - Google Patents

Circuit de sonnerie pour telephone portatif

Info

Publication number
CA2140680C
CA2140680C CA002140680A CA2140680A CA2140680C CA 2140680 C CA2140680 C CA 2140680C CA 002140680 A CA002140680 A CA 002140680A CA 2140680 A CA2140680 A CA 2140680A CA 2140680 C CA2140680 C CA 2140680C
Authority
CA
Canada
Prior art keywords
signal
mode
ringing
telephone set
circuit
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 - Fee Related
Application number
CA002140680A
Other languages
English (en)
Other versions
CA2140680A1 (fr
Inventor
Nobuhisa Shinozaki
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.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp filed Critical NEC Corp
Priority claimed from CA002035411A external-priority patent/CA2035411C/fr
Publication of CA2140680A1 publication Critical patent/CA2140680A1/fr
Application granted granted Critical
Publication of CA2140680C publication Critical patent/CA2140680C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Mobile Radio Communication Systems (AREA)
CA002140680A 1990-01-31 1991-01-31 Circuit de sonnerie pour telephone portatif Expired - Fee Related CA2140680C (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP21233/1990 1990-01-31
JP2123390 1990-01-31
CA002035411A CA2035411C (fr) 1990-01-31 1991-01-31 Circuit de sonnerie pour poste telephonique portatif

Publications (2)

Publication Number Publication Date
CA2140680A1 CA2140680A1 (fr) 1991-08-01
CA2140680C true CA2140680C (fr) 1997-02-18

Family

ID=25674466

Family Applications (2)

Application Number Title Priority Date Filing Date
CA002140679A Expired - Fee Related CA2140679C (fr) 1990-01-31 1991-01-31 Circuit de sonnerie pour telephone portatif
CA002140680A Expired - Fee Related CA2140680C (fr) 1990-01-31 1991-01-31 Circuit de sonnerie pour telephone portatif

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CA002140679A Expired - Fee Related CA2140679C (fr) 1990-01-31 1991-01-31 Circuit de sonnerie pour telephone portatif

Country Status (1)

Country Link
CA (2) CA2140679C (fr)

Also Published As

Publication number Publication date
CA2140679C (fr) 1997-10-14
CA2140679A1 (fr) 1991-08-01
CA2140680A1 (fr) 1991-08-01

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