A Sampling of Wi-Fi Telephone Technology
Avaya (Basking Ridge, NJ) Internet-based telephone system switches calls between cellular and Wi-Fi
BridgePort Networks (Chicago, IL) Software on cellular networks allows Wi-Fi devices to make phone calls
Kineto Wireless (Milpitas, CA) Cellular-network controller allows cell-phone users to roam between home and business Wi-Fi networks
Motorola (Schaumburg, IL) Dual-mode cellular and Wi-Fi mobile phone
OnRelay (Leatherhead, Surrey, England) Software turns mobile phones into wireless extensions of office desk phones
Proxim (Sunnyvale, CA) Next-generation Wi-Fi hardware enables more secure and higher-quality voice calls
Vocera Communications (Cupertino, CA) Hands-free, voice-controlled system using wireless badges allows workers to communicate via Wi-Fi