Line cabinet modules 113Enhanced Line ModuleThe ELM uses a common backplane for the duplicated controller, ringinggenerator and drawer fusing. All four line drawers on each shelf are locatedon the left side. The control equipment (such as ringing generators, fusepanels, power converters and LCM processors) is located on the right side.This arrangement allows easier removal of line cards from the drawers.The six DS-30A links for an ELM are hard-wired to a single connector onthe rear bulkhead. The Metallic Test Access (MTA) cable is hard-wired tothe back panel and also connects to the MCAM3 (described later in thischapter).All tip and ring cables from the line drawers are hard-wired to EMI-filtered,50-pin connectors on the rear bulkhead, which eliminates on-site installationof the Main Distribution Frame (MDF) cables to the line drawers.Over voltage protectionLine cards NT6X17BA, NT6X18BA, NT6X19AA and NT6X21AD areused only with telephone wiring protected by a Nortel Protector Cat. No.303M-12AIKE in combination with a 26AWG copper wire with thermoplasticinsulation. This is the maximum fusing wire to be used in series with theprotector and is mandatory for over voltage protection.Refer to the DMS-100 Family Hardware Description Manual and theInstallation Safety Manual (ISM) for more safety information.Frame Supervisory PanelThe FSP distributes and controls power and alarms in the cabinet.Meridian Cabinet Line Module-EnhancedThe MCLM-E contains two duplicated ISDN LCM-Es. The LCM-Es provideISDN Basic Rate Interface (BRI) and standard line capability. The LCM-Esprovide 480 ISDN U lines or 240 ISDN T lines.Figure 51 "MCLM-E components" (page 114) shows the MCLM-Ecomponents. The components of this cabinet module are described insubsequent paragraphs.Communication Server 2100Meridian SL-100 Product Guide555-4001-103 20.01 StandardSE09 20 October 2006Copyright © 2006, Nortel Networks Nortel Networks Confidential.
