Packetized Voice

The volume of IP (Internet Protocol) traffic has already exceeded that for circuit-switched traffic in most fixed networks. Two key technologies, HSDPA (High Speed Downlink Packet Access) and HSUPA (High Speed Uplink Packet Access), offer breakthrough data speeds - theoretically up to 14.4 Mbps in downlink and up to 5.8 Mbps in uplink respectively - clearly higher than the most advanced 3G networks. The Nokia High Speed Packet Access solution benefits network operators by improving the WCDMA network's packet data capacity and enhancing spectral efficiency. tech news

This web cast co-hosted with Cadence Design Systems, outlined how enterprises can implement a WAN solution for their contact centers, which will: maximize bandwidth efficiency while maintaining voice quality, reduce leased line expense and provide high resiliency and reliability. tech news

IP Telephony improves network utilization and saves money. Today's solutions scale to over 200,000 users and provide quality performance for networks in large enterprises, small and medium businesses, remote offices, and telecommuters. There are five principal barriers to IP telephony success, with proven methods to overcome each. Learn the fastest route to success in Nortel Network's latest report. tech news

Join TechRepublic vice president Bob Artner and Michael Shisko, IT director for Hitachi Consulting, as the two discuss some of the lesser-known capabilities of Voice Over IP technology and what it can offer your business. tech news

This paper discusses how echo contributes to poor audio quality in VoP telephony, and examines how other factors that is specific to IP networks, such as delay, jitter and packet loss, increase echo problems. It then describes signal processing software based solutions designed to address echo-related quality issues in packet voice communications. tech news