JP4446768B2 - Ip電話機 - Google Patents
Ip電話機 Download PDFInfo
- Publication number
- JP4446768B2 JP4446768B2 JP2004070460A JP2004070460A JP4446768B2 JP 4446768 B2 JP4446768 B2 JP 4446768B2 JP 2004070460 A JP2004070460 A JP 2004070460A JP 2004070460 A JP2004070460 A JP 2004070460A JP 4446768 B2 JP4446768 B2 JP 4446768B2
- Authority
- JP
- Japan
- Prior art keywords
- telephone
- voice
- codec
- call
- phone
- 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 - Fee Related
Links
- 206010002953 Aphonia Diseases 0.000 claims 1
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000001413 cellular effect Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/253—Telephone sets using digital voice transmission
- H04M1/2535—Telephone sets using digital voice transmission adapted for voice communication over an Internet Protocol [IP] network
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1083—In-session procedures
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1101—Session protocols
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1101—Session protocols
- H04L65/1104—Session initiation protocol [SIP]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/80—Responding to QoS
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M7/00—Arrangements for interconnection between switching centres
- H04M7/006—Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP), including next generation networks with a packet-switched transport layer
- H04M7/0072—Speech codec negotiation
Description
11 無線LAN
12a〜12d 無線IP電話機
13 ゲートウェイ
14 SIPサーバ
15 公衆電話交換網
16 ネットワーク
Claims (1)
- 複数のコーデックを有するIP電話機において、
通話中の音声パケットのロスが所定値を越えた場合、より対応ビットレートの低いコーデックに切り替え、
前記パケットのロスが所定値を越えた場合であって、より対応ビットレートの低いコーデックがない場合、予め設定された転送先への転送要求を行うことを特徴とするIP電話機。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004070460A JP4446768B2 (ja) | 2004-03-12 | 2004-03-12 | Ip電話機 |
EP20050703867 EP1725060A1 (en) | 2004-03-12 | 2005-01-20 | Wireless ip telephone unit |
KR20067018567A KR100878391B1 (ko) | 2004-03-12 | 2005-01-20 | 무선 ip 전화기 |
CNA2005800079493A CN1930905A (zh) | 2004-03-12 | 2005-01-20 | 无线ip电话机 |
US10/592,499 US20070195749A1 (en) | 2004-03-12 | 2005-01-20 | Wireless ip telephone set |
PCT/JP2005/000639 WO2005089008A1 (ja) | 2004-03-12 | 2005-01-20 | 無線ip電話機 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004070460A JP4446768B2 (ja) | 2004-03-12 | 2004-03-12 | Ip電話機 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005260649A JP2005260649A (ja) | 2005-09-22 |
JP4446768B2 true JP4446768B2 (ja) | 2010-04-07 |
Family
ID=34975991
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004070460A Expired - Fee Related JP4446768B2 (ja) | 2004-03-12 | 2004-03-12 | Ip電話機 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20070195749A1 (ja) |
EP (1) | EP1725060A1 (ja) |
JP (1) | JP4446768B2 (ja) |
KR (1) | KR100878391B1 (ja) |
CN (1) | CN1930905A (ja) |
WO (1) | WO2005089008A1 (ja) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7768998B1 (en) * | 2005-06-13 | 2010-08-03 | Sprint Spectrum L.P. | Dynamic VoIP codec selection based on link attributes at call setup |
US20070121595A1 (en) * | 2005-11-30 | 2007-05-31 | Batni Ramachendra P | Method and apparatus for providing customized ringback to calling party devices in an IMS network |
US8077626B2 (en) | 2006-07-14 | 2011-12-13 | Qualcomm Incorporated | Quality of service (QoS) aware establishment of communication sessions |
JP2008072599A (ja) * | 2006-09-15 | 2008-03-27 | Nec Corp | 無線通信端末、通信システム、帯域制御方法およびプログラム |
JP4338724B2 (ja) | 2006-09-28 | 2009-10-07 | 沖電気工業株式会社 | 電話端末、電話通信システム及び電話端末構成用プログラム |
WO2008050429A1 (en) | 2006-10-26 | 2008-05-02 | Fujitsu Limited | Transmitting method and device |
DE102007003187A1 (de) * | 2007-01-22 | 2008-10-02 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Vorrichtung und Verfahren zum Erzeugen eines zu sendenden Signals oder eines decodierten Signals |
US8559319B2 (en) | 2007-10-19 | 2013-10-15 | Voxer Ip Llc | Method and system for real-time synchronization across a distributed services communication network |
US7751362B2 (en) | 2007-10-19 | 2010-07-06 | Rebelvox Llc | Graceful degradation for voice communication services over wired and wireless networks |
US8090867B2 (en) * | 2007-10-19 | 2012-01-03 | Voxer Ip Llc | Telecommunication and multimedia management method and apparatus |
US7751361B2 (en) | 2007-10-19 | 2010-07-06 | Rebelvox Llc | Graceful degradation for voice communication services over wired and wireless networks |
US8699383B2 (en) | 2007-10-19 | 2014-04-15 | Voxer Ip Llc | Method and apparatus for real-time synchronization of voice communications |
US8099512B2 (en) | 2007-10-19 | 2012-01-17 | Voxer Ip Llc | Method and system for real-time synchronization across a distributed services communication network |
CN101828375B (zh) * | 2007-10-19 | 2014-10-22 | 沃克瑟知识产权有限责任公司 | 通过网络的实时媒体同步的方法和系统 |
US8250181B2 (en) | 2007-10-19 | 2012-08-21 | Voxer Ip Llc | Method and apparatus for near real-time synchronization of voice communications |
CA2707474C (en) * | 2007-10-19 | 2013-07-23 | Rebelvox, Llc | Graceful degradation for voice communication services over wired and wireless networks |
US8782274B2 (en) | 2007-10-19 | 2014-07-15 | Voxer Ip Llc | Method and system for progressively transmitting a voice message from sender to recipients across a distributed services communication network |
EP2120416A1 (en) * | 2008-05-16 | 2009-11-18 | Deutsche Telekom AG | Apparatus, method and system for improved quality of voice calls over a packet based network |
US8325662B2 (en) | 2008-09-17 | 2012-12-04 | Voxer Ip Llc | Apparatus and method for enabling communication when network connectivity is reduced or lost during a conversation and for resuming the conversation when connectivity improves |
CN102714817B (zh) * | 2009-12-10 | 2016-11-23 | 日本电气株式会社 | 网关设备、中继方法、程序和毫微微系统 |
US9338580B2 (en) * | 2011-10-21 | 2016-05-10 | Qualcomm Incorporated | Method and apparatus for packet loss rate-based codec adaptation |
US9842604B2 (en) | 2013-10-30 | 2017-12-12 | Electronics And Telecommunications Research Institute | Apparatus and method for improving communication quality of radio |
US10777217B2 (en) | 2018-02-27 | 2020-09-15 | At&T Intellectual Property I, L.P. | Performance sensitive audio signal selection |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6157620A (en) * | 1997-05-16 | 2000-12-05 | Telefonaktiebolaget Lm Ericsson | Enhanced radio telephone for use in internet telephony |
JP2000092023A (ja) * | 1998-09-11 | 2000-03-31 | Canon Inc | 無線通信システムにおける無線基地局及び無線通信装置 |
US7307980B1 (en) * | 1999-07-02 | 2007-12-11 | Cisco Technology, Inc. | Change of codec during an active call |
JP2002135322A (ja) * | 2000-10-30 | 2002-05-10 | Nec Corp | 音声符号化自動選択器 |
US7039027B2 (en) * | 2000-12-28 | 2006-05-02 | Symbol Technologies, Inc. | Automatic and seamless vertical roaming between wireless local area network (WLAN) and wireless wide area network (WWAN) while maintaining an active voice or streaming data connection: systems, methods and program products |
FI20011715A (fi) * | 2001-08-27 | 2003-02-28 | Nokia Corp | Koodekin toiminnallisen moodin valinta |
US7200139B1 (en) * | 2001-11-08 | 2007-04-03 | At&T Corp. | Method for providing VoIP services for wireless terminals |
JP2003284137A (ja) * | 2002-03-20 | 2003-10-03 | Kenwood Corp | 移動体通信端末及びその動作方法 |
US20040032860A1 (en) * | 2002-08-19 | 2004-02-19 | Satish Mundra | Quality of voice calls through voice over IP gateways |
KR100451164B1 (ko) * | 2002-09-05 | 2004-10-02 | 엘지전자 주식회사 | 디지털 신호처리 모듈들을 선택적으로 구비하는 무선 랜전화 시스템 |
US7668968B1 (en) * | 2002-12-03 | 2010-02-23 | Global Ip Solutions, Inc. | Closed-loop voice-over-internet-protocol (VOIP) with sender-controlled bandwidth adjustments prior to onset of packet losses |
US7295549B2 (en) * | 2003-02-14 | 2007-11-13 | Ntt Docomo, Inc. | Source and channel rate adaptation for VoIP |
US7715421B2 (en) * | 2004-02-05 | 2010-05-11 | At&T Intellectual Property Ii, L.P. | Third party call control of all phones |
-
2004
- 2004-03-12 JP JP2004070460A patent/JP4446768B2/ja not_active Expired - Fee Related
-
2005
- 2005-01-20 CN CNA2005800079493A patent/CN1930905A/zh active Pending
- 2005-01-20 KR KR20067018567A patent/KR100878391B1/ko not_active IP Right Cessation
- 2005-01-20 EP EP20050703867 patent/EP1725060A1/en not_active Withdrawn
- 2005-01-20 WO PCT/JP2005/000639 patent/WO2005089008A1/ja not_active Application Discontinuation
- 2005-01-20 US US10/592,499 patent/US20070195749A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
US20070195749A1 (en) | 2007-08-23 |
KR20060126813A (ko) | 2006-12-08 |
WO2005089008A1 (ja) | 2005-09-22 |
JP2005260649A (ja) | 2005-09-22 |
EP1725060A1 (en) | 2006-11-22 |
CN1930905A (zh) | 2007-03-14 |
KR100878391B1 (ko) | 2009-01-13 |
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