112 Cabinet modular hardwareThe following are cabinets in the LM series, where MCLM stands forMeridian Cabinet Line Module.• MCLM with Enhanced Line Module (ELM)• MCLM-E with ISDN Line Concentrating Module-Enhanced (LCM-E)• Meridian Cabinetized Digital Module (MCDM) with Digital Line Module(DLM)These are described and illustrated on the following pages.Meridian cabinet line moduleThe MCLM contains two duplicated ELMs. Each ELM has eight linedrawers, which house 512 line cards. The MCLM cabinet provides 1024single line card slots.Figure 50 "MCLM components" (page 112) shows the MCLM components.The components of this cabinet module are described in subsequentparagraphs.Figure 50MCLM componentsCooling unitTop and bottom units provide forced-air cooling with two-speed fans. Thefans normally run at low speed to minimize noise. If a condition of thermalstress occurs, the fans switch to high speed.Communication Server 2100Meridian SL-100 Product Guide555-4001-103 20.01 StandardSE09 20 October 2006Copyright © 2006, Nortel Networks Nortel Networks Confidential.
