ATE424689T1 - Verbesserungen für dtmf signalisierung - Google Patents

Verbesserungen für dtmf signalisierung

Info

Publication number
ATE424689T1
ATE424689T1 AT02354105T AT02354105T ATE424689T1 AT E424689 T1 ATE424689 T1 AT E424689T1 AT 02354105 T AT02354105 T AT 02354105T AT 02354105 T AT02354105 T AT 02354105T AT E424689 T1 ATE424689 T1 AT E424689T1
Authority
AT
Austria
Prior art keywords
dtmf
destination
signal
dtmf signaling
dtmf tone
Prior art date
Application number
AT02354105T
Other languages
English (en)
Inventor
Pierre Sauvage
Marc Brandt
Robert Hyerle
Original Assignee
Hewlett Packard Co
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 Hewlett Packard Co filed Critical Hewlett Packard Co
Application granted granted Critical
Publication of ATE424689T1 publication Critical patent/ATE424689T1/de

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/30—Devices which can set up and transmit only one digit at a time
    • H04M1/50—Devices which can set up and transmit only one digit at a time by generating or selecting currents of predetermined frequencies or combinations of frequencies
    • 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
    • H04M3/487—Arrangements for providing information services, e.g. recorded voice services or time announcements
    • H04M3/493—Interactive information services, e.g. directory enquiries ; Arrangements therefor, e.g. interactive voice response [IVR] systems or voice portals
    • 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
    • H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
  • Telephone Function (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Optical Communication System (AREA)
AT02354105T 2002-07-05 2002-07-05 Verbesserungen für dtmf signalisierung ATE424689T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02354105A EP1379060B1 (de) 2002-07-05 2002-07-05 Verbesserungen für DTMF Signalisierung

Publications (1)

Publication Number Publication Date
ATE424689T1 true ATE424689T1 (de) 2009-03-15

Family

ID=29719788

Family Applications (1)

Application Number Title Priority Date Filing Date
AT02354105T ATE424689T1 (de) 2002-07-05 2002-07-05 Verbesserungen für dtmf signalisierung

Country Status (4)

Country Link
US (1) US7142658B2 (de)
EP (1) EP1379060B1 (de)
AT (1) ATE424689T1 (de)
DE (1) DE60231384D1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7486665B2 (en) * 2004-10-14 2009-02-03 Cisco Technology, Inc. Transport of DTMF tones over VOATM/VOIP networks
US7924890B2 (en) * 2006-02-13 2011-04-12 Cisco Technology, Inc. Apparatus and method for increasing reliability of data sensitive to packet loss
GB0808448D0 (en) 2008-05-09 2008-06-18 Elync Ltd Secure communication system and method of operating the same
CN101931717A (zh) * 2009-06-18 2010-12-29 鸿富锦精密工业（深圳）有限公司 网络语音装置及其调整中断时间的方法
US8233951B2 (en) 2010-01-25 2012-07-31 Research In Motion Limited Error correction for DTMF corruption on uplink
GB201704489D0 (en) 2017-03-21 2017-05-03 Semafone Ltd Telephone signal processing

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5267305A (en) * 1987-10-05 1993-11-30 Ambassador College Transparent inband signaling
JPH03192953A (ja) * 1989-12-22 1991-08-22 Canon Inc 画像通信装置
US5341415A (en) * 1992-09-22 1994-08-23 Paul Baran Method and apparatus for sharing of common in-house wiring to permit multiple telephone carriers to serve the same customer
US5438618A (en) * 1993-11-15 1995-08-01 Mytech Systems Corporation Vocal frequency suppression apparatus and method
JP3550737B2 (ja) * 1994-07-08 2004-08-04 富士ゼロックス株式会社 通信装置
US6584094B2 (en) * 1996-09-12 2003-06-24 Avaya Technology Corp. Techniques for providing telephonic communications over the internet
EP0847212A1 (de) * 1996-12-06 1998-06-10 Koninklijke Philips Electronics N.V. Telefonapparat und Kommunikationssystem zum Empfangen von kodierten Signalen
US6208638B1 (en) * 1997-04-01 2001-03-27 J 2 Global Communications, Inc. Method and apparatus for transmission and retrieval of facsimile and audio messages over a circuit or packet switched network
US6650662B1 (en) * 1997-12-12 2003-11-18 International Business Machines Corporation Method and system for transmitting a DTMF signal with compressed voice in a packet switching network
US6385192B1 (en) * 1998-03-24 2002-05-07 Siemens Information And Communication Networks, Inc. Method and apparatus for DTMF signaling on compressed voice networks
US6408067B1 (en) * 1998-10-29 2002-06-18 Iq Systems, Inc. Methods and apparatus for intercepting dual-tone multi-frequency (DTMF) signals and for redialing the intercepted signals with additional DTMF signals

Also Published As

Publication number Publication date
EP1379060A1 (de) 2004-01-07
EP1379060B1 (de) 2009-03-04
US20040101128A1 (en) 2004-05-27
US7142658B2 (en) 2006-11-28
DE60231384D1 (de) 2009-04-16

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Legal Events

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RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties