Cordless DECT IP Multi-Cell System The Yealink W80 DECT IP Multi-Cell System, consisting of a base station W80B and a DECT Manager W80DM, is designed to provide organizations requiring 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 system supports up to 100 handsets and 100 simultaneous calls, ensuring one call in each handset and allowing you to get rid of the limited wireless coverage of only one base station. Meanwhile, the system can work with Yealink W57R, W59R, W56H, W71H, W73H, W74H, W78H, WH62, WH63, CP930W, CP935W, and DD Phones with seamless roaming and handover of the calls, making freely mobile communication in and between each zone achievable. Both W80B and W80DM join the modern, compact design with Yealink HD voice quality, wrapped with full-duplex technology. Key Features and Benefits Seamless handover and roaming Up to 100 parallel calls Up to 30 base stations Up to 100 handsets Up to 100 SIP accounts Support XML/LDAP/Remote Phonebook Support Xsi Directory DECT radio coverage up to 50 m indoors and 300 m outdoors Support IPv6 Support PoE DECT Technology: Yealink DECT technology focuses on high-quality Audio VoIP (wideband) and low-bit-rate data applications. However, we are incompatible with third-party DECT devices (base station, handset, etc.). Compatible with Yealink W56H (version x.85.0.45 or later), W71H (version 120.85.0.5 or later), W73H (version 116.85.0.25 or later), W74H (version 119.85.0.15 or later), W78H (version 16.85.0.5 or later), CP930W (version 87.85.0.45 or later), W59R (version 115.85.0.45 or later), W57R (version 118.85.0.5 or later), CP935W (version 149.86.0.10 or later), T54W+DD10K (version 96.85.0.95 or later) and DD Phone (version 66.84.0.115 or later)