DE60231384D1 - Verbesserungen für DTMF Signalisierung - Google Patents

Verbesserungen für DTMF Signalisierung

Info

Publication number
DE60231384D1
DE60231384D1 DE60231384T DE60231384T DE60231384D1 DE 60231384 D1 DE60231384 D1 DE 60231384D1 DE 60231384 T DE60231384 T DE 60231384T DE 60231384 T DE60231384 T DE 60231384T DE 60231384 D1 DE60231384 D1 DE 60231384D1
Authority
DE
Germany
Prior art keywords
dtmf
destination
signal
dtmf signaling
dtmf tone
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
DE60231384T
Other languages
English (en)
Inventor
Pierre Sauvage
Marc Brandt
Robert Hyerle
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.)
Hewlett Packard Development Co LP
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 DE60231384D1 publication Critical patent/DE60231384D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
DE60231384T 2002-07-05 2002-07-05 Verbesserungen für DTMF Signalisierung Expired - Lifetime DE60231384D1 (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
DE60231384D1 true DE60231384D1 (de) 2009-04-16

Family

ID=29719788

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60231384T Expired - Lifetime DE60231384D1 (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
US20040101128A1 (en) 2004-05-27
ATE424689T1 (de) 2009-03-15
US7142658B2 (en) 2006-11-28
EP1379060B1 (de) 2009-03-04

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Legal Events

Date Code Title Description
8327 Change in the person/name/address of the patent owner

Owner name: HEWLETT-PACKARD DEVELOPMENT CO., L.P., HOUSTON, US

8328 Change in the person/name/address of the agent

Representative=s name: SCHOPPE, ZIMMERMANN, STOECKELER & ZINKLER, 82049 P

8364 No opposition during term of opposition