Zyxel IES4005 [19/236] System overview

Chapter 2 IES Chassis

IES4005M User’s Guide

2.4 System Overview

The IES chassis, cards, and modules function together as follows:

• The management card transmits services upstream, receives downstream traffic into the IES,

and manages the system.

• Different management cards provide different upstream ports.

•The output power to the backplane which transmits the power to the fan module, line cards, and

management card.

• Subscriber devices connect to the IES line cards through subscriber cables, and to the IP network

through the management card.

• Different line cards provide different subscriber services (ALC1132G-51, VLC1132G-51, and

VOP1164G-61).

• Connect the public switched telephone network (PSTN/ISDN) or a VOP1164G-61’s port to the

POTS port on an xDSL line card to provide voice and DSL service to the line card’s subscribers.

• The management card connects to and monitors the fan module through the backplane.