WIRELESS IP TELEPHONY.

The article describes the design challenges and technical hurdles facing successful deployment of wireless Internet Protocol (IP) telephony. New wireless network architecture will take advantage of the service and management flexibility offered by IP, allowing service providers to offer multimedia and data content to their wireless subscribers. The greatest challenges facing the successful deployment of wireless IP telephony are threefold: securing reliable guarantees of service quality on par with traditional cellular systems, obtaining spectral efficiencies over the wireless channel that will not hinder system capacity or service quality, and effectively providing seamless connections to mobile users.