JPH0232828B2 - - Google Patents

Info

Publication number
JPH0232828B2
JPH0232828B2 JP60255206A JP25520685A JPH0232828B2 JP H0232828 B2 JPH0232828 B2 JP H0232828B2 JP 60255206 A JP60255206 A JP 60255206A JP 25520685 A JP25520685 A JP 25520685A JP H0232828 B2 JPH0232828 B2 JP H0232828B2
Authority
JP
Japan
Prior art keywords
signal
energy
filter
telephone line
register
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 - Lifetime
Application number
JP60255206A
Other languages
English (en)
Japanese (ja)
Other versions
JPS61152156A (ja
Inventor
Jeemuzu Uirukii Buruusu
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of JPS61152156A publication Critical patent/JPS61152156A/ja
Publication of JPH0232828B2 publication Critical patent/JPH0232828B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/2272—Subscriber line supervision circuits, e.g. call detection circuits
    • 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
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Telephone Function (AREA)
  • Telephonic Communication Services (AREA)
JP60255206A 1984-12-21 1985-11-15 呼進行モニタ Granted JPS61152156A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US684826 1984-12-21
US06/684,826 US4686699A (en) 1984-12-21 1984-12-21 Call progress monitor for a computer telephone interface

Publications (2)

Publication Number Publication Date
JPS61152156A JPS61152156A (ja) 1986-07-10
JPH0232828B2 true JPH0232828B2 (show.php) 1990-07-24

Family

ID=24749743

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60255206A Granted JPS61152156A (ja) 1984-12-21 1985-11-15 呼進行モニタ

Country Status (5)

Country Link
US (1) US4686699A (show.php)
EP (1) EP0185295B1 (show.php)
JP (1) JPS61152156A (show.php)
CA (1) CA1227586A (show.php)
DE (1) DE3574440D1 (show.php)

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IT1216206B (it) * 1986-07-28 1990-02-22 Weltert Alfredo Apparato modulatore-demodulatore in banda fonica per la ricetrasmissione di dati digitali con riconoscimento dei sistemi standard di comunicazione da parte dell'apparato chiamante.
DE3629907A1 (de) * 1986-09-03 1988-03-10 Standard Elektrik Lorenz Ag Signalisierungsempfaenger
JP2678602B2 (ja) * 1987-09-11 1997-11-17 富士通株式会社 キャリヤ検出装置
US4847893A (en) * 1988-09-19 1989-07-11 Ibm Corporation Method for monitoring telephone status changes
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US5063593A (en) * 1989-08-23 1991-11-05 Samsung Electronics Co., Ltd. Tone-type recognition method
US5333152A (en) * 1989-09-22 1994-07-26 Wilber James G Electronic mail remote data transfer system
JP2567289B2 (ja) * 1990-02-21 1996-12-25 株式会社田村電機製作所 相手応答検知装置
US5023906A (en) * 1990-04-24 1991-06-11 The Telephone Connection Method for monitoring telephone call progress
WO1992011723A1 (en) * 1990-12-21 1992-07-09 Codex Corporation Call progress decoder for multiple cadenced tones on telephone lines
DE4124977C1 (show.php) * 1991-07-27 1992-09-10 Grundig E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig Hollaend. Stiftung & Co Kg, 8510 Fuerth, De
US5905780A (en) * 1991-10-08 1999-05-18 Dynaflo Systems Inc. Electronic mail system
US5319702A (en) * 1992-07-29 1994-06-07 Tele-Matic Corporation Method and apparatus for detecting and responding to hook flash events occurring on a remote telephone
US5805685A (en) * 1995-11-15 1998-09-08 Gateway Technologies, Inc. Three way call detection by counting signal characteristics
US5796811A (en) * 1995-11-15 1998-08-18 Gateway Technologies, Inc. Three way call detection
US5850436A (en) * 1996-08-23 1998-12-15 Compaq Computer Corporation Communication between a telephone and a computer system
US5949853A (en) * 1997-02-28 1999-09-07 International Business Machines Corporation Extension device for a computer system
US5870046A (en) * 1997-04-22 1999-02-09 Silicon Laboratories Inc. Analog isolation system with digital communication across a capacitive barrier
US6430229B1 (en) 1997-04-22 2002-08-06 Silicon Laboratories Inc. Capacitive isolation system with digital communication and power transfer
US6385235B1 (en) 1997-04-22 2002-05-07 Silicon Laboratories, Inc. Direct digital access arrangement circuitry and method for connecting to phone lines
US6359983B1 (en) 1997-04-22 2002-03-19 Silicon Laboratories, Inc. Digital isolation system with data scrambling
US6339048B1 (en) * 1999-12-23 2002-01-15 Elementis Specialties, Inc. Oil and oil invert emulsion drilling fluids with improved anti-settling properties
US6456712B1 (en) 1997-04-22 2002-09-24 Silicon Laboratories Inc. Separation of ring detection functions across isolation barrier for minimum power
US6442271B1 (en) 1997-04-22 2002-08-27 Silicon Laboratories, Inc. Digital isolation system with low power mode
US6587560B1 (en) * 1997-04-22 2003-07-01 Silicon Laboratories Inc. Low voltage circuits powered by the phone line
US6498825B1 (en) * 1997-04-22 2002-12-24 Silicon Laboratories Inc. Digital access arrangement circuitry and method for connecting to phone lines having a DC holding circuit with programmable current limiting
US6480602B1 (en) 1997-04-22 2002-11-12 Silicon Laboratories, Inc. Ring-detect interface circuitry and method for a communication system
US6516024B1 (en) 1997-04-22 2003-02-04 Silicon Laboratories Inc. Digital access arrangement circuitry and method for connecting to phone lines having a DC holding circuit with low distortion and current limiting
US6137827A (en) 1997-04-22 2000-10-24 Silicon Laboratories, Inc. Isolation system with digital communication across a capacitive barrier
US6442213B1 (en) 1997-04-22 2002-08-27 Silicon Laboratories Inc. Digital isolation system with hybrid circuit in ADC calibration loop
US6144326A (en) 1997-04-22 2000-11-07 Silicon Laboratories, Inc. Digital isolation system with ADC offset calibration
US6289070B1 (en) 1997-04-22 2001-09-11 Silicon Laboratories, Inc. Digital isolation system with ADC offset calibration including coarse offset
US6389134B1 (en) * 1997-04-22 2002-05-14 Silicon Laboratories, Inc. Call progress monitor circuitry and method for a communication system
US6167134A (en) * 1997-04-22 2000-12-26 Silicon Laboratories, Inc. External resistor and method to minimize power dissipation in DC holding circuitry for a communication system
US6504864B1 (en) 1997-04-22 2003-01-07 Silicon Laboratories Inc. Digital access arrangement circuitry and method for connecting to phone lines having a second order DC holding circuit
US6408034B1 (en) 1997-04-22 2002-06-18 Silicon Laboratories, Inc. Framed delta sigma data with unlikely delta sigma data patterns
US6321194B1 (en) 1999-04-27 2001-11-20 Brooktrout Technology, Inc. Voice detection in audio signals
US7505406B1 (en) 2001-07-13 2009-03-17 Evercom Systems, Inc. Public telephone control with voice over internet protocol transmission
US8000269B1 (en) 2001-07-13 2011-08-16 Securus Technologies, Inc. Call processing with voice over internet protocol transmission
US7899167B1 (en) 2003-08-15 2011-03-01 Securus Technologies, Inc. Centralized call processing
US6687344B1 (en) * 2001-09-07 2004-02-03 Pctel,Inx. Parallel handset on-hook/off-hook detection by software-based signal power measurement
US7916845B2 (en) 2006-04-13 2011-03-29 Securus Technologies, Inc. Unauthorized call activity detection and prevention systems and methods for a Voice over Internet Protocol environment
US7860222B1 (en) 2003-11-24 2010-12-28 Securus Technologies, Inc. Systems and methods for acquiring, accessing, and analyzing investigative information
US9020114B2 (en) 2002-04-29 2015-04-28 Securus Technologies, Inc. Systems and methods for detecting a call anomaly using biometric identification
US9026468B2 (en) 2002-04-29 2015-05-05 Securus Technologies, Inc. System and method for proactively establishing a third-party payment account for services rendered to a resident of a controlled-environment facility
US7529357B1 (en) 2003-08-15 2009-05-05 Evercom Systems, Inc. Inmate management and call processing systems and methods
CN100456782C (zh) 2003-12-16 2009-01-28 腾讯科技（深圳）有限公司 一种电话状态信息呈现系统及其实现方法
US10796392B1 (en) 2007-05-22 2020-10-06 Securus Technologies, Llc Systems and methods for facilitating booking, bonding and release
US8135114B2 (en) * 2007-08-06 2012-03-13 Mspot, Inc. Method and apparatus for creating an answer tone for a computing device with phone capabilities or a telephone
US8737597B2 (en) 2009-01-27 2014-05-27 Cisco Technology, Inc. Call progress analysis on the edge of a VoIP network

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DE2536585C3 (de) * 1975-08-16 1981-04-02 Philips Patentverwaltung Gmbh, 2000 Hamburg Anordnung zur statistischen Signalanalyse
US4028493A (en) * 1975-12-22 1977-06-07 International Business Machines Corporation Call progress signal detector
GB1534319A (en) * 1976-08-20 1978-11-29 Cossor Ltd A C Electrical filter networks
US4133979A (en) * 1977-01-26 1979-01-09 Trw, Inc. Multifrequency sender/receiver in a multi-time slot digital data stream
JPS58717B2 (ja) * 1977-08-22 1983-01-07 株式会社日立国際電気 選択呼出回路
US4254304A (en) * 1977-09-26 1981-03-03 E-Systems, Inc. Signal processor for use with a telephone system and a digital transmission line
US4313038A (en) * 1978-10-13 1982-01-26 Wescom, Inc. DTMF Signal receiver
US4227055A (en) * 1978-12-07 1980-10-07 Bell Telephone Laboratories, Incorporated Multifrequency receiver
FR2471699A1 (fr) * 1979-12-12 1981-06-19 Trt Telecom Radio Electr Dispositif de filtrage comportant des reseaux integrateurs a commutation de capacites
DE3002041C2 (de) * 1980-01-21 1983-11-10 Siemens AG, 1000 Berlin und 8000 München Elektrische Filterschaltung unter Verwendung von wenigstens einer simulierten Induktivität, die gesteuerte Schalter, Kondensatoren und Verstärker enthält
JPS57103465A (en) * 1980-12-17 1982-06-28 Nec Corp Audible signal detecting circuit
JPS585066A (ja) * 1981-07-01 1983-01-12 Nippon Signal Co Ltd:The 信号選択方式
US4421952A (en) * 1981-10-16 1983-12-20 Motorola, Inc. Multi-frequency busy signal synthesizing circuitry
JPS58151761A (ja) * 1982-03-05 1983-09-09 Nec Corp 可聴信号音検出方式
US4502049A (en) * 1982-08-30 1985-02-26 Itec, Inc. Universal signalling tone receiver
JPS5985173A (ja) * 1982-11-05 1984-05-17 Nec Corp 自動−自動網制御装置
US4578537A (en) * 1983-08-05 1986-03-25 International Remote Imaging Systems, Inc. Telecommunication apparatus serving as an interface between a digital computer and an analog communication medium
US4549044A (en) * 1983-10-06 1985-10-22 Cermetek Microelectronics, Inc. Remote telemetry unit

Also Published As

Publication number Publication date
US4686699A (en) 1987-08-11
CA1227586A (en) 1987-09-29
EP0185295A2 (en) 1986-06-25
EP0185295A3 (en) 1988-05-04
JPS61152156A (ja) 1986-07-10
DE3574440D1 (en) 1989-12-28
EP0185295B1 (en) 1989-11-23

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees