Wireless Telephony

Wireless IP Telephony

The convergence of traditional telecommunications and the Internet is creating new network-based service delivery opportunities for telecommunications companies carriers, service providers, and network equipment providers. Voice over Wireless IP is one of the most exciting new developments emerging within the telephony market. It is set to revolutionize the delivery of mobile voice Services and...

Internet Telephony over Wireless Links

This thesis presents algorithms to enhance the efficiency of packetized, interactive speech communication over wireless networks. The results achieved are the following: We present an improved approach to assess the quality of voice transmissions in IP-based communication networks. We combined the ITU E-Model, the ITU PESQ algorithm, and various codec and playout schedulers to analyse VoIP trac...

Household Demand for Wireless Telephony

Welcome to the Wireless World: Problems Using & Understanding Mobile Telephony

Wireless telephony adoption is on the rise in many parts of the world (Cahners In-Stat Group, 2000), with recent technological innovations continuing to enhance the capabilities of the technology (McGinity, 1999). The market is extremely competitive. Service providers and wireless handset manufacturers, therefore, are faced with the challenge of designing wireless services and handsets to retai...

An Experimental Testbed for Wireless Internet Telephony and Streaming Multimedia

In an effort to realize wireless Internet telephony and streaming multimedia in a highly mobile environment a testbed emulating a wireless Internet has been built. This would allow establishing multi-media calls between IP mobiles and integration between IP and PSTN end-points in a wireless environment. Different functionalities and components involved with the wireless Internet streaming multi...