Voice over IP Enabling Telephony and IP Network Convergence (Special Issue on High-speed Internet Technology and its Applications)

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概要

• 論文の詳細を見る

• Voice over IP (VoIP) is a generic name for services, systems and technology for telephony over an IP network. It is also referred to as Internet telephony and IP (Internet Protocol) telephony. Internet telephone client software attracted attention when it first appeared in 1995. Since that, VoIP has rapidly matured into a practical technology, propelled by the popularization and rapid development of the Internet. IP network traffic already exceeds telephone network traffic and is expected to further increase several-fold in the next few years. In future, the telephone network will be integrated into the IP network and telephony will become entirely VoIP. There are three expectations for VoIP. The first is inexpensive telephone service. The second expectation is for integrated telephony and IP network services such as a CTI (Computer Telephony Integration) system in which there is interworking with various Internet applications, such as e-mail and Web call-back for communication services of greater convenience rather than simple replacement of the telephone. The third expectation is for a platform for providing high-quality voice communication, multicast communication, and other such enhanced voice services that have a high degree of freedom. However, many problems remain to be overcome before the VoIP System is realized. The main problems are real-time transmission of voice that allows a smooth conversation, session control for providing a variety of services, and the proposal of new services. In this paper, we give an overview of VoIP and the problems that must be solved in order to realize it and propose some solutions regarding stream control and applications. We also describe session control and other topics that are being discussed in standardization forums.

• 社団法人電子情報通信学会の論文
• 2001-05-01

著者

• Tsukada Koji

  Ip Network Research Center Research And Development Group Hitahchi Ltd.

• HOSHI Tohru

  IP Network Research Center, Research and Development Group, Hitahchi, Ltd.

• YUMOTO Kazuma

  IP Network Research Center, Research and Development Group, Hitahchi, Ltd.

• TANIGAWA Keiko

  IP Network Research Center, Research and Development Group, Hitahchi, Ltd.

• NAKAYAMA Yoshiyuki

  Medical Application Program Development Department, Government and Public Corporation Information Sy

• Hoshi Tohru

  Ip Network Research Center Research And Development Group Hitahchi Ltd.

• Yumoto Kazuma

  Ip Network Research Center Research And Development Group Hitahchi Ltd.

• Nakayama Yoshiyuki

  Medical Application Program Development Department Government And Public Corporation Information Sys

関連論文

• Voice over IP Enabling Telephony and IP Network Convergence (Special Issue on High-speed Internet Technology and its Applications)
• Voice Stream Multiplexing between IP Telephony Gateways (Special Issue on Internet Technology and Its Applications)

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