IT1163425B - Indicatore telefonico - Google Patents

Indicatore telefonico

Info

Publication number: IT1163425B
Authority: IT; Italy
Prior art keywords: telephone indicator; telephone; indicator
Prior art date: 1982-12-14

Application number

IT21387/83A

Other languages

English (en)

Other versions

IT8321387A0 (it

Inventor

Robin I Milne

Lester Kirkland

Original Assignee

Mitel 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.)

1982-12-14

Filing date

1983-05-31

Publication date

1987-04-08

1983-05-31 Application filed by Mitel Corp filed Critical Mitel Corp

1983-05-31 Publication of IT8321387A0 publication Critical patent/IT8321387A0/it

1987-04-08 Application granted granted Critical

1987-04-08 Publication of IT1163425B publication Critical patent/IT1163425B/it

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/60—Semi-automatic systems, i.e. in which the numerical selection of the outgoing line is under the control of an operator
- H04M3/62—Keyboard equipment
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/82—Line monitoring circuits for call progress or status discrimination
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/002—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems
- H04M9/003—Transmission of control signals from or to the key telephone set; signalling equipment at key telephone set, e.g. keyboard or display equipment

Landscapes

Engineering & Computer Science (AREA)
Signal Processing (AREA)
Telephone Function (AREA)
Telephone Set Structure (AREA)
Sub-Exchange Stations And Push- Button Telephones (AREA)

IT21387/83A 1982-12-14 1983-05-31 Indicatore telefonico IT1163425B (it)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA000417653A CA1188831A (en)	1982-12-14	1982-12-14	Telephone indicator

Publications (2)

Publication Number	Publication Date
IT8321387A0 IT8321387A0 (it)	1983-05-31
IT1163425B true IT1163425B (it)	1987-04-08

Family

ID=4124148

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
IT21387/83A IT1163425B (it)	1982-12-14	1983-05-31	Indicatore telefonico

Country Status (8)

Country	Link
US (1)	US4544808A (it)
JP (1)	JPS59115695A (it)
CA (1)	CA1188831A (it)
DE (1)	DE3335774A1 (it)
ES (1)	ES527325A0 (it)
FR (1)	FR2537820A1 (it)
GB (1)	GB2132054B (it)
IT (1)	IT1163425B (it)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0500194B1 (en) *	1987-02-10	1998-05-27	Canon Kabushiki Kaisha	Communication apparatus
DE3825895A1 (de) *	1988-07-29	1990-02-01	Siemens Ag	Fernsprechendgeraet mit funktionstasten
DE3825898C2 (de) *	1988-07-29	1994-09-22	Siemens Ag	Fernsprechendgerät mit Funktionstasten
US5339360A (en) *	1992-07-17	1994-08-16	Rolm Company	Method of synchronizing LEDS between a digital telephone and remote options
US5530737A (en) *	1993-03-22	1996-06-25	Phonex Corporation	Secure access telephone extension system and method
US6055435A (en) *	1997-10-16	2000-04-25	Phonex Corporation	Wireless telephone connection surge suppressor
DE19815014C2 (de) *	1998-04-03	2002-02-14	Bosch Gmbh Robert	Telekommunikationsendgerät
US6438390B1 (en)	1999-05-06	2002-08-20	Motorola, Inc.	Plural status indication control method suitable for use in a communication device
US6665375B1 (en)	2000-11-21	2003-12-16	International Business Machines Corporation	Method and apparatus for providing accessibility to call connection status

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE908147C (de) *	1951-10-02	1954-04-01	Mix & Genest Ag	Optische Anzeigeeinrichtung an Vermittlungsplaetzen zur Kennzeichnung des Schaltzustandes der Leitungen
GB969537A (en) *	1961-10-11	1964-09-09	Telephone Mfg Co Ltd	Improvements in and relating to telephone systems
US3770898A (en) *	1972-06-05	1973-11-06	Gte Automatic Electric Lab Inc	Called line status testing circuit
US3906168A (en) *	1973-12-12	1975-09-16	Bell Telephone Labor Inc	Visual status indicator circuit
US3920929A (en) *	1974-03-29	1975-11-18	Bell Telephone Labor Inc	Key telephone system
US3937901A (en) *	1974-06-03	1976-02-10	International Telephone & Telegraph Corporation	Lamp control circuit for key telephone systems
US3953683A (en) *	1974-10-29	1976-04-27	San/Bar Corporation	Interrupter for telephone systems
US3991282A (en) *	1974-12-27	1976-11-09	Feil Thomas E	Multi station telephone switching system
US4004106A (en) *	1975-06-25	1977-01-18	Akzona Incorporated	Line circuit for use with a key telephone system
JPS5292978A (en) *	1976-02-02	1977-08-04	Seikosha Kk	Press machine
US4022989A (en) *	1976-06-28	1977-05-10	Bell Telephone Laboratories, Incorporated	Telephone receiver-off-hook-and-in-use detector
US4046972A (en) *	1976-10-27	1977-09-06	Bell Telephone Laboratories, Incorporated	Key telephone station set circuit
US4132860A (en) *	1977-08-01	1979-01-02	Crest Industries, Inc.	Hold control for a key telephone system
JPS54130806A (en) *	1978-04-03	1979-10-11	Takachiho Tsushin Kiki Seisakusho:Kk	Signal discrimination system or busy tone and so on
US4212011A (en) *	1978-08-30	1980-07-08	General Electric Company	Multimode liquid crystal display
US4257045A (en) *	1978-10-05	1981-03-17	Texas Instruments Incorporated	RMS voltage control with variable duty cycle for matching different liquid crystal display materials
DE2913894A1 (de) *	1979-04-06	1980-10-16	Telefonbau & Normalzeit Gmbh	Mit einem elektrischen anzeigeelement versehene taste fuer fernmelde-insbesondere fernsprechgeraete
JPS5939957B2 (ja) *	1979-08-07	1984-09-27	岩崎通信機株式会社	ボタン電話装置におけるランプ制御方式
DE2949499C2 (de) *	1979-12-08	1982-06-03	Krone Gmbh, 1000 Berlin	Anzeigeeinrichtung für Symbole der Fernsprechtechnik
JPS5683167A (en) *	1979-12-12	1981-07-07	Kanda Tsushin Kogyo Kk	Line lamp control system for button telephone device
JPS56110376A (en) *	1980-02-05	1981-09-01	Toshiba Corp	Holding state display system of key telephone set
DE3037361C2 (de) *	1980-09-30	1983-11-10	Siemens AG, 1000 Berlin und 8000 München	Schaltungsanordnung für zentralgesteuerte Fernsprechanlagen, insbesondere Fernsprechnebenstellenanlagen und private Fernsprechsonderanlagen, mit teilnehmerstellen- und/oder vermittlungsplatzorientierten Betriebsbereitschaftsanzeigemitteln
US4394544A (en) *	1981-11-09	1983-07-19	Gte Automatic Electric Labs Inc.	Line circuit for multiple line telephone

1982
- 1982-12-14 CA CA000417653A patent/CA1188831A/en not_active Expired
1983
- 1983-05-31 IT IT21387/83A patent/IT1163425B/it active
- 1983-10-01 DE DE19833335774 patent/DE3335774A1/de active Granted
- 1983-10-03 FR FR8315833A patent/FR2537820A1/fr active Pending
- 1983-10-13 GB GB08327457A patent/GB2132054B/en not_active Expired
- 1983-10-14 JP JP58193335A patent/JPS59115695A/ja active Pending
- 1983-10-14 US US06/542,038 patent/US4544808A/en not_active Expired - Lifetime
- 1983-11-16 ES ES527325A patent/ES527325A0/es active Granted

Also Published As

Publication number	Publication date
US4544808A (en)	1985-10-01
CA1188831A (en)	1985-06-11
ES8407638A1 (es)	1984-09-16
IT8321387A0 (it)	1983-05-31
GB2132054B (en)	1986-12-17
JPS59115695A (ja)	1984-07-04
GB2132054A (en)	1984-06-27
ES527325A0 (es)	1984-09-16
DE3335774A1 (de)	1984-06-14
FR2537820A1 (fr)	1984-06-15
DE3335774C2 (it)	1987-10-22
GB8327457D0 (en)	1983-11-16

Publication	Publication Date	Title
FI832485L (fi)	1984-01-20	Foerfarande foer att brygga drycker
MX152710A (es)	1985-10-18	Mejoras en estereonicroscopio
FI830497L (fi)	1983-08-24	Saett att framstaella flerskiktspapper
FI823737A0 (fi)	1982-11-02	Foerfarande foer att flotationsanrika komplexa metallfoereningar
FI830441L (fi)	1984-03-09	Saett att framstaella ferrokisel
IT1163618B (it)	1987-04-08	Telajo circolare
IT1163425B (it)	1987-04-08	Indicatore telefonico
FI823587A0 (fi)	1982-10-20	Saett att aotervinna kemikalier fraon kloridhaltig groenlut
FI824462A0 (fi)	1982-12-27	Saett att transportera vaetska
FI820206L (fi)	1983-07-23	Saett att framstaella surmjoelkprodukter
FI833013A0 (fi)	1983-08-23	Anordning foer att tvinna aotminstone tvao ledare
PT73434A (fr)	1981-08-01	Sonneria de telephone
FI833012A (fi)	1984-02-25	Anordning foer att tvinna ledare
FI831773L (fi)	1983-11-27	Foerfarande foer att beraekna foedotillsatser
PT7320U (pt)	1986-04-11	Aparelho telefonico
RO81541A2 (ro)	1983-06-01	Rotametru indicator
IT8252836V0 (it)	1982-01-22	Allarme fonico
BR8203440A (pt)	1984-01-10	Prendedor
KR850003478U (ko)	1985-06-17	다이얼 장치
BR8203400A (pt)	1984-01-10	Teletestador de central telefonica
ATE36424T1 (de)	1988-08-15	Anzeigevorrichtung.
KR840001750U (ko)	1984-05-17	종
BR8207629A (pt)	1984-08-07	Fones-classificados
FI821609A0 (fi)	1982-05-07	Foerfarande foer att framstaella metalliska roerkroekar
FI821606A0 (fi)	1982-05-07	Anordning att uppsamla solstraolar