IT1208541B - Interfaccia di stazione per sistema elettronico digitale di commutazione telefonica avente il processore audio digitale centralizzato. - Google Patents

Interfaccia di stazione per sistema elettronico digitale di commutazione telefonica avente il processore audio digitale centralizzato.

Info

Publication number
IT1208541B
IT1208541B IT8520737A IT2073785A IT1208541B IT 1208541 B IT1208541 B IT 1208541B IT 8520737 A IT8520737 A IT 8520737A IT 2073785 A IT2073785 A IT 2073785A IT 1208541 B IT1208541 B IT 1208541B
Authority
IT
Italy
Prior art keywords
switching system
audio processor
telephone switching
station interface
electronic telephone
Prior art date
Application number
IT8520737A
Other languages
English (en)
Other versions
IT8520737A0 (it
Inventor
Vincent V Korsky
Chansak Laotetpitaks
Original Assignee
Tie Communications
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 Tie Communications filed Critical Tie Communications
Publication of IT8520737A0 publication Critical patent/IT8520737A0/it
Application granted granted Critical
Publication of IT1208541B publication Critical patent/IT1208541B/it

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
IT8520737A 1984-05-16 1985-05-16 Interfaccia di stazione per sistema elettronico digitale di commutazione telefonica avente il processore audio digitale centralizzato. IT1208541B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/610,700 US4577310A (en) 1984-05-16 1984-05-16 Station interface for digital electronic telephone switching system having centralized digital audio processor

Publications (2)

Publication Number Publication Date
IT8520737A0 IT8520737A0 (it) 1985-05-16
IT1208541B true IT1208541B (it) 1989-07-10

Family

ID=24446077

Family Applications (1)

Application Number Title Priority Date Filing Date
IT8520737A IT1208541B (it) 1984-05-16 1985-05-16 Interfaccia di stazione per sistema elettronico digitale di commutazione telefonica avente il processore audio digitale centralizzato.

Country Status (5)

Country Link
US (1) US4577310A (it)
JP (1) JPS6182599A (it)
AU (1) AU577498B2 (it)
GB (1) GB2159019B (it)
IT (1) IT1208541B (it)

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US4674083A (en) * 1984-11-16 1987-06-16 Solid State Systems, Inc. Time division multiplexed switching structure for PBX
US4852087A (en) * 1987-07-10 1989-07-25 Solid State Systems, Inc. Receiver data gate with automatic gain control
US4809261A (en) * 1987-07-10 1989-02-28 Solid State Systems, Inc. Space and time switch for 22 PCM highways
US4858227A (en) * 1987-08-25 1989-08-15 Solid State Systems, Inc. Space and time having multiplexed memories
FR2626426B1 (fr) * 1988-01-22 1994-02-25 Telic Alcatel Systeme de commutation temporelle
FR2648663B1 (fr) * 1989-06-19 1994-07-22 Alcatel Business Systems Architecture d'installation telephonique de type prive
GB8915172D0 (en) * 1989-07-01 1989-08-23 Orbitel Mobile Communications Receiver gain control for radio telephone system
US5260941A (en) * 1990-10-31 1993-11-09 Rose Communications, Inc. Digital radio telephone system
JPH04208742A (ja) * 1990-12-04 1992-07-30 Canon Inc 通話レベル調整装置
US5384776A (en) * 1991-02-22 1995-01-24 Erricsson Ge Mobile Communications Inc. Audio routing within trunked radio frequency multisite switch
JP2744357B2 (ja) * 1991-04-23 1998-04-28 キヤノン株式会社 構内交換装置
GB2296170A (en) * 1994-12-16 1996-06-19 Ibm Audio communication apparatus
US5923749A (en) * 1995-12-06 1999-07-13 Telefonaktiebolaget Lm Ericsson Method and system for eliminating acoustic echos in a digital telecommunication system
US6381267B1 (en) 1999-03-08 2002-04-30 International Business Machines Corporation Modems, methods, and computer program products for falling back to a lower data rate protocol upon detecting abnormal line conditions during startup
US7003030B2 (en) 1999-03-08 2006-02-21 Lenovo (Singapore) Pte. Ltd. Receivers, methods, and computer program products for an analog modem that receives data signals from a digital modem
US6487243B1 (en) 1999-03-08 2002-11-26 International Business Machines Corporation Modems, methods, and computer program products for recovering from errors in a tone reversal sequence between two modems
US6553518B1 (en) 1999-03-08 2003-04-22 International Business Machines Corporation Severe error detectors, methods and computer program products that use constellation specific error event thresholds to detect severe error events during demodulation of a signal comprising symbols from a plurality of symbol constellations
US6661837B1 (en) 1999-03-08 2003-12-09 International Business Machines Corporation Modems, methods, and computer program products for selecting an optimum data rate using error signals representing the difference between the output of an equalizer and the output of a slicer or detector
US6389064B1 (en) 1999-03-08 2002-05-14 International Business Machines Corporation Modems, methods, and computer program products for identifying a signaling alphabet in variance with an ideal alphabet due to digital impairments
US6341360B1 (en) 1999-03-08 2002-01-22 International Business Machines Corporation Decision feedback equalizers, methods, and computer program products for detecting severe error events and preserving equalizer filter characteristics in response thereto
US6661847B1 (en) 1999-05-20 2003-12-09 International Business Machines Corporation Systems methods and computer program products for generating and optimizing signal constellations
US6792040B1 (en) 1999-10-29 2004-09-14 International Business Machines Corporation Modems having a dual power mode capability and methods of operating same
US6754258B1 (en) 1999-10-29 2004-06-22 International Business Machines Corporation Systems, methods and computer program products for averaging learned levels in the presence of digital impairments based on patterns
US6611563B1 (en) 1999-10-29 2003-08-26 International Business Machines Corporation Systems, methods and computer program products for data mode refinement of modem constellation points
US6765955B1 (en) 1999-10-29 2004-07-20 International Business Machines Corporation Methods, systems and computer program products establishing a communication configuration for a modem connection to compensate for echo noise
US6816545B1 (en) 1999-10-29 2004-11-09 International Business Machines Corporation Systems, methods and computer program products for identifying digital impairments in modems based on clusters and/or skips in pulse code modulation signal levels
US6826157B1 (en) 1999-10-29 2004-11-30 International Business Machines Corporation Systems, methods, and computer program products for controlling data rate reductions in a communication device by using a plurality of filters to detect short-term bursts of errors and long-term sustainable errors
US6823017B1 (en) 1999-10-29 2004-11-23 International Business Machines Corporation Systems, methods and computer program products for filtering glitches from measured values in a sequence of code points
US6505222B1 (en) 1999-10-29 2003-01-07 International Business Machines Corporation Systems methods and computer program products for controlling undesirable bias in an equalizer
US6792004B1 (en) 1999-10-29 2004-09-14 International Business Machines Corporation Systems, methods and computer program products for averaging learned levels in the presence of robbed-bit signaling based on proximity
US6839382B1 (en) 1999-10-29 2005-01-04 International Business Machines Corporation System, methods and computer program products for identifying digital impairments in modem signals using signature analysis and signal level comparison analysis
US6967995B1 (en) 1999-10-29 2005-11-22 International Business Machines Corporation Methods, systems and computer program products for carrier drop detection using a variable threshold
US6650657B1 (en) 1999-10-29 2003-11-18 International Business Machines Corporation Systems, methods and computer program products for identifying digital impairments in modem signals
US6662322B1 (en) 1999-10-29 2003-12-09 International Business Machines Corporation Systems, methods, and computer program products for controlling the error rate in a communication device by adjusting the distance between signal constellation points
US6823004B1 (en) 1999-10-29 2004-11-23 International Business Machines Corporation Methods, systems and computer program products for monitoring performance of a modem during a connection
US6647053B1 (en) * 2000-08-31 2003-11-11 Ricochet Networks, Inc. Method and system for channel masking in a communication network
US7564963B2 (en) * 2004-04-05 2009-07-21 Language Line Services, Inc. Multi-handset telephone system
US20060013382A1 (en) * 2004-07-15 2006-01-19 Takaaki Hoshikawa Telephone exchange system and control method used for the same system
US7702054B2 (en) * 2006-05-05 2010-04-20 Seiko Epson Corporation Detecting errors in transmitted data

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Publication number Priority date Publication date Assignee Title
GB1406663A (en) * 1972-08-22 1975-09-17 Standard Telephones Cables Ltd Telphone subset circuits
US3860756A (en) * 1973-03-23 1975-01-14 Nitsuko Ltd Automatic voice-path switching circuit for a speaker phone telephone set
US3953676A (en) * 1974-12-12 1976-04-27 Northern Electric Company, Limited Digital control of a loudspeaking telephone system
US3963876A (en) * 1975-06-30 1976-06-15 Bell Telephone Laboratories, Incorporated Amplifier circuit for increasing transmit and receive levels in a telephone hybrid network
US4389720A (en) * 1981-04-23 1983-06-21 Bell Telephone Laboratories, Incorporated Distributed digital conferencing system
CA1177588A (en) * 1982-02-12 1984-11-06 Ernst A. Munter Digital circuit and method for the detection of call progress tones in telephone systems
US4455646A (en) * 1982-08-26 1984-06-19 Richard L. Scully Pulse code modulated digital automatic exchange
US4757521A (en) * 1984-05-17 1988-07-12 Tie/Communications, Inc. Synchronization method and apparatus for a telephone switching system

Also Published As

Publication number Publication date
IT8520737A0 (it) 1985-05-16
AU4193185A (en) 1985-11-21
GB2159019B (en) 1987-11-04
US4577310A (en) 1986-03-18
GB2159019A (en) 1985-11-20
JPS6182599A (ja) 1986-04-26
AU577498B2 (en) 1988-09-22
GB8512157D0 (en) 1985-06-19

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Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19950530