Results 161 to 170 of about 385 (204)
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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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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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Seamless Interconnection for Universal Services. Global Telecommunications Conference. GLOBECOM'99. (Cat. No.99CH37042), 2003
This paper addresses the challenges related to the interoperability of GSM and IP networks by presenting an interworking concept between the GSM and IP telephony services. The Mobile IP protocol provides mobile Internet hosts with data service roaming between IP sub-networks of different access technologies. Being a generic solution, Mobile IP may fail
J. Lemilainen, H. Haverinen
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This paper addresses the challenges related to the interoperability of GSM and IP networks by presenting an interworking concept between the GSM and IP telephony services. The Mobile IP protocol provides mobile Internet hosts with data service roaming between IP sub-networks of different access technologies. Being a generic solution, Mobile IP may fail
J. Lemilainen, H. Haverinen
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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.
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Diffusion of mobile telephony in India: An empirical study
Technological Forecasting and Social Change, 2012Ruchita Gupta, Karuna Jain
exaly
The diffusion of mobile telephony in Kazakhstan: An empirical analysis
Technological Forecasting and Social Change, 2016Deok-Joo Lee
exaly