Functional description 23• Control local stations’ ringing functions.• Provide a serial port for local configuration and maintenance functions.• Provide local and remote loopback testing and fault isolation functions.Functional descriptionThe local system is controlled by the CPU. The CPU performs read/writefunctions on the network control and status registers, and communicateswith the network equipment over the CPU bus. Through these messages,the CPU monitors the system’s status, provides call connectionsequences, monitors traffic activities, downloads application software andconfiguration data, and performs system administration and diagnostics.Fiber Remote IPE utilizes fiber-optic links to provide the same subscriberfunctionality at the remote site as at the local site.Figure 5 "Fiber Remote architecture" (page 24) illustrates the FiberRemote architecture. It shows the Fiber Superloop Network card, the FiberPeripheral Controller card, and the internal bus structure that connectsthem to other system components.Figure 5 "Fiber Remote architecture" (page 24) also describes theElectro-optical packlet to provide an understanding of the internal systemcommunication and call-processing activities through the fiber-optic link.Nortel Communication Server 1000Fiber Remote IPE FundamentalsNN43021-554 04.01 4 June 2010Copyright © 2007-2010 Nortel Networks. All Rights Reserved.
