20 Description and featuresA Main with Expander supports eight physical and ten logical card slots. Ina fully expanded system consisting of five Main and Expander pairs, a totalof 40 physical and 50 logical card slots are supported.Figure 3 "Circuit card assignments in the Chassis" (page 20) shows thecircuit card assignments in the Main Chassis. Figure 4 "Circuit cardassignments in the Chassis Expander" (page 21) shows the circuit cardassignments in the Expander.Figure 3Circuit card assignments in the ChassisNortel Communication Server 1000Communication Server 1000M and Meridian 1 Small System OverviewNN43011-110 01.01 StandardRelease 5.0 30 May 2007Copyright © 2003 - 2007, Nortel Networks.