DE3585606D1 - Leitungsschaltung zum antrieb eines weckers und einer dienstanzeigelampe in einem fernsprechgeraet. - Google Patents

Leitungsschaltung zum antrieb eines weckers und einer dienstanzeigelampe in einem fernsprechgeraet.

Info

Publication number
DE3585606D1
DE3585606D1 DE8585116458T DE3585606T DE3585606D1 DE 3585606 D1 DE3585606 D1 DE 3585606D1 DE 8585116458 T DE8585116458 T DE 8585116458T DE 3585606 T DE3585606 T DE 3585606T DE 3585606 D1 DE3585606 D1 DE 3585606D1
Authority
DE
Germany
Prior art keywords
driving
indicator lamp
alarm clock
line circuit
telephone unit
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
DE8585116458T
Other languages
English (en)
Inventor
Masaki Itoh
Junichi Koike
Yoshishige Tanaka
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Application granted granted Critical
Publication of DE3585606D1 publication Critical patent/DE3585606D1/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/50—Centralised arrangements for answering calls; Centralised arrangements for recording messages for absent or busy subscribers ; Centralised arrangements for recording messages
    • H04M3/53—Centralised arrangements for recording incoming messages, i.e. mailbox systems
    • H04M3/537—Arrangements for indicating the presence of a recorded message, whereby the presence information might include a preview or summary of the message
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • H04M19/023—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone by reversing the polarity of the current at the exchange
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
DE8585116458T 1984-12-29 1985-12-23 Leitungsschaltung zum antrieb eines weckers und einer dienstanzeigelampe in einem fernsprechgeraet. Expired - Fee Related DE3585606D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59279915A JPS61179647A (ja) 1984-12-29 1984-12-29 サ−ビス表示用ランプの点灯方法

Publications (1)

Publication Number Publication Date
DE3585606D1 true DE3585606D1 (de) 1992-04-16

Family

ID=17617680

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8585116458T Expired - Fee Related DE3585606D1 (de) 1984-12-29 1985-12-23 Leitungsschaltung zum antrieb eines weckers und einer dienstanzeigelampe in einem fernsprechgeraet.

Country Status (6)

Country Link
US (1) US4726060A (de)
EP (1) EP0187366B1 (de)
JP (1) JPS61179647A (de)
KR (1) KR890004595B1 (de)
CA (1) CA1245381A (de)
DE (1) DE3585606D1 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4821314A (en) * 1986-07-30 1989-04-11 Telic Alcatel, S.A. Message and ringing signaling device for a telephone installation
KR920007443Y1 (ko) * 1990-07-28 1992-10-15 삼성전자 주식회사 진공청소기의 모터제어장치
EP0504716A3 (en) * 1991-03-21 1992-11-04 Siemens Aktiengesellschaft Method for the activation of an optical indicator in a communication apparatus connected to a switching exchange
DE59204791D1 (de) * 1991-03-21 1996-02-08 Siemens Ag Verfahren zur Aktivierung einer optischen Anzeige in einem an eine Kommunikationsanlage angeschlossenen analogen Kommunikationsendgerät
JP2606449B2 (ja) * 1993-07-23 1997-05-07 日本電気株式会社 個別選択呼出受信機
US7013007B1 (en) * 1999-01-11 2006-03-14 Altigen Communications, Inc. Computer telephony power supply method and apparatus
US6556663B2 (en) 2000-10-16 2003-04-29 Scitec, Inc. Guestroom telephone having single action message retrieval
CN113825283B (zh) * 2021-10-08 2023-06-06 深圳创维－Rgb电子有限公司 远场语音视觉指示灯控制电路、方法、装置及电子产品

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3904833A (en) * 1973-06-04 1975-09-09 Superior Continental Corp Ringing generator circuit with capacitor storage
US4025729A (en) * 1975-12-05 1977-05-24 Bell Telephone Laboratories, Incorporated Telephone ringing control circuits
US4140882A (en) * 1977-09-12 1979-02-20 Wescom Switching, Inc. Methods and apparatus for special status indication in telephone systems
CH624519A5 (en) * 1977-10-17 1981-07-31 Siemens Ag Albis Circuit arrangement for controlling the subscriber stations of a telecommunications switching system, in particular a telephone switching system
NL7802423A (nl) * 1978-03-06 1979-09-10 Philips Nv Voedingsinrichting voor een lijnstroomloop.
US4298774A (en) * 1979-05-02 1981-11-03 Gte Automatic Electric Labs Inc. Call waiting signal arrangement
DE3237652A1 (de) * 1982-10-11 1984-04-12 Siemens AG, 1000 Berlin und 8000 München Fernsprechanlage
US4506115A (en) * 1983-09-12 1985-03-19 Gte Communications Products Corporation Message alert system

Also Published As

Publication number Publication date
JPS61179647A (ja) 1986-08-12
EP0187366A2 (de) 1986-07-16
EP0187366A3 (en) 1988-06-08
CA1245381A (en) 1988-11-22
KR890004595B1 (ko) 1989-11-16
KR860005516A (ko) 1986-07-23
EP0187366B1 (de) 1992-03-11
JPH0351346B2 (de) 1991-08-06
US4726060A (en) 1988-02-16

Similar Documents

Publication Publication Date Title
DK313085D0 (da) En indretning i et alarmsystem
AU2576288A (en) Environmental indicating device
GB8421389D0 (en) Electronic type memo device
GB8610381D0 (en) Fuel indicator apparatus
DE3579902D1 (de) Vorrichtung zur unterbrechung von bogenfoermigen entladungen in einem gasentladungsgefaess.
ES287851Y (es) Un dispositivo de rotulo luminoso.
GB2157871B (en) Apparatus for providing an environmental alarm indication
EP0142134A3 (en) Magnetically actuated level indicator
DE3585606D1 (de) Leitungsschaltung zum antrieb eines weckers und einer dienstanzeigelampe in einem fernsprechgeraet.
GB8304485D0 (en) Detecting faults in lamps
GB8411504D0 (en) Electronic warning apparatus
IT9019346A0 (it) Apparecchio elettrico di automatismo a segnalazione di stato
GB2160324B (en) Life raft testing device
DE3464352D1 (en) A fluid level indicator
GB2145905B (en) Audible warning device
PL255837A1 (en) Flow indicator device
GB2143648B (en) A device for inspecting value symbols
GB8327213D0 (en) Reflective jack-point indicator
DD234765A3 (de) Drehende vorrichtung
DE58905195D1 (de) Vorrichtung zum anreissen.
GB8807643D0 (en) Telephone line faults indicator
GB8302189D0 (en) System for automated test marking and reporting
FR2600008B2 (fr) Dispositif pour le controle du temps de soudage
MC1582A1 (fr) Dispositif pour le controle du temps de soudage
GB2147998B (en) Indicator device

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee