The COMfortel WS-400 IP is an IP DECT server with six VoIP channels to the SIP-based ICT system for the best possible reachability of employees. Twelve handsets can be connected. If this is not sufficient, up to 30 handsets can be used and twelve VoIP channels can be reached by activating an IP-DECT multi-cell server. The server was developed for the COMfortel M-100/M-210/M-310 DECT handsets, with which optimal use is guaranteed.