2-6 Chapter 2Hardware DescriptionsThis fully featured, self-contained system is connected directly to the data bus and communi-cates with the system processor. This design means that installation time is minimised, op-eration is streamlined and many features can be implemented that are not normally possiblewith older, conventional, stand-alone Voice Mail/Auto Attendant systems.All power to run the system comes from the power supply. Each power supply is rated ac-cording to the number of stations it will support. When SVMi-8 is installed, it counts as eight(8) stations of the PSU rating regardless of the number of Voice Processing Modules in-stalled.4WLIThe 4WLI card provides a cable interface between the OfficeServ 100 system and a COMBOtype Wireless LAN (WLAN) Base Station (WBS24), which is the access point for a WLAN.The cable interface is a digital system, using the 2B+1D Quad Digital Adaptor SubscriberLoops (QDASL) interface. One 4WLI is installed in the basic cabinet universal slot 3 and cansupport up to four WBS24s (see table, below). Since two DASL lines are connected to oneWBS24, 2x(2B+1D) 4 voice channel simultaneous calls are supported.Number of 4WLI cards allowed 1Maximum number of WBS24s supported 4Maximum number of users 64Number of simultaneous calls 16Each WBS24 installed counts as four stations of the PSU rating. Therefore, when the 4WLIcard is supporting the maximum of four WBS24s, it counts as 16 stations.In summary, the 4WLI card:y provides cable interface (voice and signalling data) between the Access Point (WBS24)and the OfficeServ system;y performs initialization to service VoIP over the WLAN;y manages information on all voice terminals and provides service for authorised terminals;y supports mobility and handover between Access Points for voice terminals.