CA2067899A1 - Device for detecting tones on telephone lines - Google Patents

Device for detecting tones on telephone lines

Info

Publication number
CA2067899A1
CA2067899A1 CA2067899A CA2067899A CA2067899A1 CA 2067899 A1 CA2067899 A1 CA 2067899A1 CA 2067899 A CA2067899 A CA 2067899A CA 2067899 A CA2067899 A CA 2067899A CA 2067899 A1 CA2067899 A1 CA 2067899A1
Authority
CA
Canada
Prior art keywords
call progress
progress tones
hook
telephone lines
identifying
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.)
Granted
Application number
CA2067899A
Other languages
French (fr)
Other versions
CA2067899C (en
Inventor
Robert L. Richmond
Martin Richmond
Richard Aydelotte
Bennet Blake
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.)
Cisco Systems Inc
Original Assignee
Robert L. Richmond
Martin Richmond
Richard Aydelotte
Bennet Blake
Active Voice, Inc.
Active Voice Corporation
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 Robert L. Richmond, Martin Richmond, Richard Aydelotte, Bennet Blake, Active Voice, Inc., Active Voice Corporation filed Critical Robert L. Richmond
Publication of CA2067899A1 publication Critical patent/CA2067899A1/en
Application granted granted Critical
Publication of CA2067899C publication Critical patent/CA2067899C/en
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
    • H04M1/82—Line monitoring circuits for call progress or status discrimination
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2201/00—Electronic components, circuits, software, systems or apparatus used in telephone systems
    • H04M2201/38—Displays

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
  • Telephone Function (AREA)

Abstract

Device for detecting and identifying call progress tones on telephone lines. The application discloses a device for converting auditory call progress tones to visual indications and a novel circuit for identifying and distinguishing call progress tones based on their on-off cadence, if any, along with various alternative embodiments including: (1) a device which converts call progress tones to visual indications as for use by the deaf, (2) a device which is programmed to automatically go off-hook at certain times, detect a tone such as a stuttered dial tone indicating a message waiting, and activate a visual indicator, and (3) the use of a capacitor or rechargeable battery which is periodically refreshed by the device automatically going off-hook and which, while the device is on-hook, provides power required by the device.
CA002067899A 1991-05-02 1992-05-01 Device for detecting tones on telephone lines Expired - Fee Related CA2067899C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US694,697 1991-05-02
US07694697 US5327493B1 (en) 1991-05-02 1991-05-02 Device for detecting tones on telephone lines

Publications (2)

Publication Number Publication Date
CA2067899A1 true CA2067899A1 (en) 1992-11-03
CA2067899C CA2067899C (en) 1995-12-12

Family

ID=24789903

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002067899A Expired - Fee Related CA2067899C (en) 1991-05-02 1992-05-01 Device for detecting tones on telephone lines

Country Status (2)

Country Link
US (1) US5327493B1 (en)
CA (1) CA2067899C (en)

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05110693A (en) * 1991-10-16 1993-04-30 Fujitsu Ltd Transfer information informing system
JP2887054B2 (en) * 1993-10-15 1999-04-26 キヤノン株式会社 Communication device
US5450476A (en) * 1993-11-22 1995-09-12 Bell Communications Research, Inc. Method and system for providing nonpublished number messaging service
WO1995018501A1 (en) * 1993-12-30 1995-07-06 Gte Laboratories Incorporated Method and apparatus for message delivery using local visual/audible indication
US5553138A (en) * 1994-05-13 1996-09-03 Compaq Computer Corporation Telephone line sourced power supply
US5638437A (en) * 1994-10-05 1997-06-10 Teleliason Inc. Telecommunication system and method enabling a user to get access to an automated call processing from a central station operating on pulse dialling mode
US5802166A (en) * 1994-11-30 1998-09-01 Sni Innovation, Inc. Dual signal triggered message waiting notification system for indicating storage of different types of messages awaiting retrieval
US5790653A (en) * 1995-01-06 1998-08-04 Voicewaves, Inc. Line-powered detection of call progress tones
US5583924A (en) * 1995-02-13 1996-12-10 Cidco Incorporated Caller ID and call waiting for multiple CPES on a single telephone line
US5745557A (en) * 1995-04-28 1998-04-28 Cidco Incorporated CIDCW primary/secondary arbitration
US5715308A (en) * 1995-02-22 1998-02-03 Siemens Business Communication Systems, Inc. Apparatus for generating alerts of varying degrees
US5699417A (en) * 1995-04-21 1997-12-16 Cidco Incorporated Text transmission using DTMF signalling
CA2189604C (en) * 1995-12-11 2001-01-16 Burt Joseph Bossi Method of providing telecommunications network-based message services
US5664008A (en) * 1995-12-11 1997-09-02 At&T Message waiting adjunct device
US5930338A (en) * 1996-02-20 1999-07-27 Solopoint, Inc. Method for handling incoming calls on a pots telephone line to a user's premises
US6058178A (en) * 1996-02-20 2000-05-02 Solopoint, Inc. Method for routing incoming calls to a user's premises on a POTS telephone line
US6021176A (en) * 1996-02-20 2000-02-01 Solopoint, Inc. Method for monitoring incoming calls to a user's premises on a pots telephone line
US5768356A (en) * 1996-02-20 1998-06-16 Solopoint, Inc. User programmable personal call manager
US5764758A (en) * 1996-05-02 1998-06-09 Aastra Aerospace Inc. Interrupted tone converter
US5825852A (en) * 1996-07-24 1998-10-20 Notify Corporation Multisensing circuitry for class signals and stutter dial tone in visual message waiting indicator
US6041114A (en) 1997-03-27 2000-03-21 Active Voice Corporation Telecommute server
US5768366A (en) * 1997-04-02 1998-06-16 Teledex Corporation High voltage message waiting circuit
US6072869A (en) * 1997-12-22 2000-06-06 Nortel Networks Corporation Adaptive method and apparatus for detecting a stutter dial tone signal
US6320941B1 (en) * 1998-01-08 2001-11-20 Dan Tyroler Stand alone electronic mail notifying device
US6230007B1 (en) * 1998-08-17 2001-05-08 Legerity, Inc. Method and apparatus for detecting message waiting signal
FR2793094B1 (en) * 1999-04-12 2001-06-22 Henri Depaepe Sa MESSAGE INDICATOR FOR TELEPHONE TERMINAL
US6766162B1 (en) 1999-04-23 2004-07-20 Skyworks Solutions, Inc. Message notification system for wireless communication system
US6687369B1 (en) * 1999-04-30 2004-02-03 Jorge A. Crespo Telephone signal discriminator
US7430283B2 (en) * 2002-11-06 2008-09-30 Omega Products Corporation Internet access to telecommunications relay service
US7012544B2 (en) * 2003-04-09 2006-03-14 Cube Investments Limited Address and/or alarm indicator sign
US20060067501A1 (en) * 2004-09-24 2006-03-30 Sbc Knowledge Ventures L.P. Method and apparatus for a do not disturb telephone system
KR101127325B1 (en) * 2007-09-04 2012-03-29 지멘스 엔터프라이즈 커뮤니케이션즈 게엠베하 운트 코. 카게 Method and communication terminal for detecting the status of a telephone receiver

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4086434A (en) * 1976-09-07 1978-04-25 Leo P. Christiansen Remote condition reporting system
US4221933A (en) * 1978-12-21 1980-09-09 Cornell Ronald G Data storage and retrieval structure for a message storage system
US4289931A (en) * 1979-11-28 1981-09-15 Micro-Tek, Inc. Security identification system using pulse code modulation
US4277649A (en) * 1980-01-18 1981-07-07 Bell Telephone Laboratories, Incorporated Method and apparatus for screening telephone calls
US4395590A (en) * 1980-11-03 1983-07-26 Universal Data Systems, Inc. Line powered modem
US4534041A (en) * 1982-02-12 1985-08-06 Northern Telecom Limited Digital circuit for determining the envelope frequency of PCM encoded call progress tones in a telephone system
GB2183964B (en) * 1985-11-28 1989-10-11 Stc Plc Telephone power supply
US4696031A (en) * 1985-12-31 1987-09-22 Wang Laboratories, Inc. Signal detection and discrimination using waveform peak factor
US4893332A (en) * 1986-05-12 1990-01-09 Aquatrol Corporation Low-powered remote sensor
US4821314A (en) * 1986-07-30 1989-04-11 Telic Alcatel, S.A. Message and ringing signaling device for a telephone installation
US4809321A (en) * 1986-09-22 1989-02-28 Dytel Corporation Busy/no-answer call completion equipment
US4935958A (en) * 1986-09-22 1990-06-19 Dytel Corporation Busy/no-answer call completion equipment
US4809272A (en) * 1986-09-22 1989-02-28 Rockwell International Corporation Telephone switching system with voice detection and answer supervision
US4737984A (en) * 1986-12-01 1988-04-12 Northern Telecom Limited Dial tone detector
US4782518A (en) * 1987-12-16 1988-11-01 Danny G. Mattley Apparatus for converting distinctive ring to selective ring in telephone lines
US4852151A (en) * 1988-02-24 1989-07-25 Hayes Microcomputer Products, Inc. Modem with call waiting
US4878236A (en) * 1988-12-02 1989-10-31 Ray Donald K Automatic emergency locator system and method
US5007000A (en) * 1989-06-28 1991-04-09 International Telesystems Corp. Classification of audio signals on a telephone line
US5063593A (en) * 1989-08-23 1991-11-05 Samsung Electronics Co., Ltd. Tone-type recognition method
US4995076A (en) * 1990-02-09 1991-02-19 Integrated Network Corporation Call progress capability for a switched channel data service unit

Also Published As

Publication number Publication date
US5327493B1 (en) 1997-10-14
CA2067899C (en) 1995-12-12
US5327493A (en) 1994-07-05

Similar Documents

Publication Publication Date Title
CA2067899A1 (en) Device for detecting tones on telephone lines
MY117016A (en) Emergency telephone with automatic low- battery signaling
HK84197A (en) Telephone having receive call indicating function and mute/light key
GB2019698A (en) Telephone number memory and indicator system
EP0280323A3 (en) Portable cordless telephone set for outputting various discrimination sounds with simple circuit construction
EP0310433A3 (en) Radio telephone device
NO963022L (en) Method and Use of Subscriber Line Interface for Detecting Lifted Telephone Pipes by Dialing
JPS5765949A (en) Telephone set with voice synthesizing device
ES8403001A1 (en) Method of and electronic device for detecting the lifting of the telephone handset in presence of ringing current.
DE3176051D1 (en) Portable instrument for measuring the attenuation of a subscriber's telephone line
GB9611130D0 (en) Portable telephone system with telephone answering device
JPS6469143A (en) Facsimile equipment
JPS53148307A (en) Automatic answering telephone set
JPS6467058A (en) Telephone number informing device
JPS5687969A (en) Automatic answering telephone set
ES2085340T3 (en) PROCEDURE FOR MANAGING INCOMING CALLS TO A FAX SHARING A TELEPHONE LINE WITH ITS ASSOCIATED TELEPHONE DEVICE AND A SECOND DEVICE.
GB2156188B (en) Automatic telephone answering apparatus with speech detection
JPS56137761A (en) Display system for originating-subscriber's number
EP0514695A3 (en) Telephone set with ring tone inhibit circuit
KR840004635A (en) Telephone answering method that can record date and time at the time with message of talker at the same time
JPS6418356A (en) Facsimile equipment
GB2274959B (en) Battery powered telephone visual ringing indicator
AU3346584A (en) Subscriber's telephone circuit with key operated pulse generating calling device
JPS6429052A (en) Line switcher
JPS5720064A (en) Facsimile equipment equipped with answer-signal visual display device

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed