Internet telephony jumps off the wires

In Internet telephony, voice data from phone calls is broken up into packets and sent across the Internet. Currently, this technology is being increasingly used by individuals and companies. To cope with the demand, providers are offering wireless Internet telephony, which adds convenience by letting users make Internet calls from their mobile phones via IEEE 802.11 (Wi-Fi) wireless LAN and third-generation (3G) cellular technologies. However, the full benefits of the technology are yet to be achieved. This is because several concerns, including, power usage, security, and quality of service (QoS) still need to be solved first.