The KX-DTE100 and KX-TDE200 can be used to construct a full-IP telecom system, making them a perfect match for these new communication systems. The KX-TDE100 and KX-TDE200 offer new, standard-equipped IP functions that boost efficiency and lower communication costs. They also include convenient and highly effective features such as wireless operation, voice mail and CTI The KX-DTE100 and KX-TDE200 respond flexibly to needs like this. By changing the main board in the current TDA series, a new system can be easily constructed. This lets the KX-TDE100 and KX-TDE200 provide optional solutions for companies that want to smoothly migrate to an IP system while continuing to use their existing telecom network.