OpenScape S is the server-based “All-In-One” telephony and UC platform, which supports up to 1500 IP subscribers and IP (SIP) connection to the public network (WAN). It is designed for Linux (Novell SLES) operating system and can be operated either on a physical or on virtual machines with VMware vSphere. OpenScape Business S can be networked with OpenScape Business X1, X3, X5 or X8 as gateway for ISDN or anlog trunks or TDM / analog devices.