Lucent Technologies 555-230-024 manual 1-20

Introduction
555-230-024
1-20 Issue 5 January 1998
Figure 1-11 shows two control carriers and two Center Stage Switche s in a criti-
cal reliability, Center Stage duplex system. As shown in Figure 1- 11, a fiber-optic
cable connects each port network to the Center Stage Switch, and another
fiber-optic cable connects each Center Stage Switch to the duplicate Center
Stage Switch.
Figure 1-11. Critical Reliability Center Stage ECS System
1) Processor Port Network 4) Control Carrier
2) Expansion Port Network 5) Duplicate Control Carrier
3) Center Stage Switches (2) 6) Fiber Optic Cable