104 Cabinet modular hardwareSingle-shelf busThe message switch is a hub for the communication between the switch’scomponents. The MS occupies the upper shelf of the SCC and is equippedwith cards on the front and corresponding paddleboards on the rear. Thecards share a common bus with the paddleboards.Cooling unitThe cooling unit provides forced-air ventilation for the equipment housedin the SCC.Link interfaceThe Link Interface Shelf (LIS) is a single-shelf Link Peripheral Processor(LPP) capable of supporting 12 Application Specific Units (ASUs). Anexample of an ASU is the Link Interface Unit (LIU) for CCS7 applications.The 12 ASUs supported by the LIS are in addition to the two LIUs that canbe provisioned with the ENET shelf for CCS7 applications.If additional ASUs are needed, external LPP cabinets may be added. TheSuperNode SE system supports external LPPs up to the full physicalcapability of the SuperNode SE message switch.Enhanced NetworkThe Enhanced Network (ENET) shelf provides up to 16K ENET channelson two planes, provisionable in 4K increments. The shelf can also beprovisioned with two LIUs, which can be used for CCS7 links.Frame Supervisory PanelThe FSP controls alarms in the cabinet.Power requirementThe SuperNode SE cabinet is powered by either the Meridian CabinetAuxiliary Module phase 3 (MCAM3). Both supply -48 V DC power to theSuperNode SE cabinet. The power supply option selected is based onthe lineup configuration chosen by the user. For details on SuperNode SEconfigurations, refer to "System configuration" (page 137).SNSE cabinetThe SNSE cabinet includes the following:• Message Switch (MS)• Link Interface Shelf (LIS)• Enhanced Network (ENET)• Computing Module (CM)• Frame Supervisory Panel (FSP)Communication Server 2100Meridian SL-100 Product Guide555-4001-103 20.01 StandardSE09 20 October 2006Copyright © 2006, Nortel Networks Nortel Networks Confidential.
