The DSCXL S30810-Q2311-X300 (Data and Switch Processor for CompactPCI/LAN) is the main processing-board for the HiPath 4000 V4.0 with a 1GB memory slot. The module-board provides the ADP-Processing (as well as the control of CompactPCI-Busses in the backpanel) and is responsible for fundamental System-control-functions. Interfaces: Standard CompactPCI-interface (C39334-Z7086-*) for backpanel 2 x V.24 9-pin SUB-D-interface (Serviceterminal/Modem) 4 x RJ45-interface for LAN-connections Client-LAN Service-LAN IPDA-LAN Atlantic-LAN