Results 161 to 170 of about 388 (207)
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Assessing network readiness for IP telephony
2002 IEEE International Conference on Communications. Conference Proceedings. ICC 2002 (Cat. No.02CH37333), 2002Networked multimedia applications require stringent real-time QoS guarantees. Successful deployment of such applications closely depends on the performance of the underlying data network. The characteristics and the QoS requirements of these applications are different from traditional data applications.
M. Bearden +4 more
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Scalable network assessment for IP telephony
2004 IEEE International Conference on Communications (IEEE Cat. No.04CH37577), 2004Multimedia applications such as IP telephony are among the applications that demand strict quality of service (QoS) guarantees from the underlying data network. At the predeployment stage it is critical to assess whether the network can handle the QoS requirements of IP telephony and fix problems that may prevent a successful deployment.
Bengi Karacali +2 more
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Emergency Telecommunication Support for IP Telephony
2005As universal high speed internet access becomes a reality, phone calls are increasingly being made over the Internet rather than the conventional PSTN. The danger to this trend is the un-availability of priority mechanisms for communication between emergency response personnel during times of disaster.
Francesco Moggia +3 more
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Traffic Analysis for IP Telephony
2005 2nd International Conference on Electrical and Electronics Engineering, 2005There is a great interest today in voice communication over the Internet (VoIP) with a high level quality of service (QoS). Our objective in this paper is to assess to what extent today's Internet is meeting this expectation. This work presents H.323 traffic analysis in the scenario where two LANs are connected through the Internet.
H. Toral-Cruz, D. Torres-Roman
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IP telephony for interplanetary exploration
2004 IEEE Aerospace Conference Proceedings (IEEE Cat. No.04TH8720), 2004Voice over IP (VoIP), using techniques developed for telephony, is a natural method for providing voice services for planetary explorers. Providing the ability to make telephone calls over the Internet, VoIP can replace radiofrequency communications in remote environments that are not serviced by a conventional telephone system. VoIP can provide better
T. Stone, R. Alena, M. Johnson
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2005
There are mainly two types of used communication systems; circuit switched and packet switched networks. In circuit switched networks, there must be a dedicated path and a sequence of connected links between the calling and called stations. A connection with the proper resources has to be established prior to the start of information exchange.
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There are mainly two types of used communication systems; circuit switched and packet switched networks. In circuit switched networks, there must be a dedicated path and a sequence of connected links between the calling and called stations. A connection with the proper resources has to be established prior to the start of information exchange.
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An Architecture for the Transport of IP Telephony Services
2001The transport infrastructure to VoIP traffic is moving toward a multiple service platform of high-speed routers interconnected by optical network SDH/WDM. A multiple-service network allows operators to attend to clients through optimization of resources, differentiated quality of service and traffic engineering.
Sidnei Guerra +2 more
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A role for ATM in telephony and IP networks
Computer Networks, 2000Abstract Public telecommunication network operators are now concentrating their attention on the Internet, not only for realising datacommunication services but also for a network infrastructure for providing telephony services. This has resulted in a reluctance to invest in existing circuit-switched technology and in the implementation of a number ...
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The clearest voice [IP telephony]
Communications Engineer, 2004IP telephony is on its way to succeeding the World Wide Web as the next breakthrough application for all-IP networks. Two standards are currently competing for dominance in IP telephony - the H.323 protocol suite by the International Telecommunication Union (ITU) and the session initiation protocol (SIP) by the Internet Engineering Task Force (IETF ...
T. Zahariadis, S. Spanos
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International Conference on Communication Technology Proceedings, 2003. ICCT 2003., 2004
This paper reviews trends in services, market and technology for IP telephony, which is growing in the international and domestic market. Also enterprise network apparatus are being replaced by IP based apparatus, which enables the integration of Internet and PBX. It also describes technical and regulatory issues for further penetration of IP telephony.
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This paper reviews trends in services, market and technology for IP telephony, which is growing in the international and domestic market. Also enterprise network apparatus are being replaced by IP based apparatus, which enables the integration of Internet and PBX. It also describes technical and regulatory issues for further penetration of IP telephony.
openaire +1 more source