The Yealink W90 DECT IP Multi-Cell System, consisting of three elements - a Virtual Integrator Manager (optional), a DECT Manager W90DM and a base station W90B, is designed to provide the organizations who require wireless coverage with the full ease of deployment. This DECT multi-cell system intends to create an extremely scalable and reliable solution for organizations of any size and shape. The VIM system supports up to 10 DM, 600 base stations, 2500 handsets and 2500 simultaneous calls. The W90 multi-cell system supports up to 1 DM, 60 base stations, 250 handsets and 250 simultaneous calls, which ensures one call in each handset. It allows you to get rid of the limited wireless signal coverage of only one base station. Meanwhile, the system can work with Yealink W53H, W56H, W59R, W57R, W73H, W78H, WH62, WH63, CP930W, CP935W and DD Phone (T54W DD Phone is not applicable to VIM system) with seamless roaming and handover of the calls, making freely mobile communication in and between each zone achievable. Both W90B and W90DM join the modern, compact design with Yealink HD voice quality that sets free your ears and gives you an elaborate audio experience.