The Integration of IP and telephone networks start with a low-cost, easy to use wireless IP phone. The Hitachi Wireless IP5000 (WIP-5000) is an all-round 802.11b wireless IP phone supporting the Session Initiation Protocol (SIP), which is essential for multimedia communications. With Flexible support for the latest IP-PBX systems and existing PBX systems, including IP-Centrex offered by telecommunications service providers, you can painlessly and flexibly introduce the Hitachi WirelessIP5000 (WIP-5000) making use of your existing office communications environment. Reduce communications costs, while at the same time greatly reducing the administrative cost and burden of your telephony equipment. Make your communications efficiency soar, both inside the company and out.