CHAPTER 1.Overview OfficeServ 500 Wireless LAN Service Manual/Ed.00Page 1-14 © SAMSUNG Electronics Co., Ltd.3.3.5 WBS24 (Combo) BlockThe block diagram of WBS24(Combo) and functions for each block are as follows.Figure 1.3 Block Diagram of WBS24 WBS24 (Combo)3.4 WBS24 (Basic)3.4.1 OverviewThe WBS24(Basic) is the AP(Access Point) for using the wireless LAN service.3.4.2 Major FunctionsThe major functions of WBS24(Basic) are as follows :y Provides the wireless RF interface that meets IEEE 802.11b, the wireless LANstandard.y Provides the wired LAN interface that meets IEEE 802.3, the wired LANstandard.y Provides voice communication through OfficeServ 500 System using a Voiceover WLAN phone.y Provides a wireless data service to data terminals that have the wireless LANinterface.y Separates the wirelessly received voice and data from each other and transmitsthem to OfficeServ 500 System and LAN.(If a voice message(signal) is received,it is transmitted to OfficeServ 500 System. If a data message(signal) is received,it is transmitted to LAN.)y Provides the compression and decompression of PCM voice data.Magnetic EmbeddedCPU(NetARMCore *2) PCMCIAPowerController(3.3V/5V AutoSwitch)LEDControlUARTControllerSRAM64K word Reset ControlWLAN NICCARD(802.11b)MAC/BB/Ext.Ant.ExternalAntenna- Diversity- Gain : 2dBi- DipoleFlash ROM4M byteSDRAM16M byteVoltageRegularInput : 3.3VOutput : 1.8VSIORS232CDC/DC Power(Remote)-48/+5, +3.3DASLDSP- Audio Codec- Echo CancellationRJ-45RJ-45RJ-45Ethernet10/100TUARTDASL_Int.ResetEthernet I/F25MHz XtalSDRAMBUS32bitsEPB BUS8bitsDSP_Int(To Host)1.8V3.3V5.0V UART(D_Ch)PCM I/FDASL.Int2048NHzOSC20MHz XtalResetBUS 16bitsHPI 8bitsResetDSP_IntPCMCIA I/F(EPD)3.3V or 5.0V-48V
