Juniper Networks G10 CMTS User Manual

Page 32

G10 CMTS Hardware Overview

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JUNOSg 3.0 G10 CMTS Hardware Guide

Following is a brief explanation of each feature shown in Figure 4 through Figure 7:

Front Features

! DOCSIS Module—Module that contains the Broadband Cable Processor ASIC and resides

between the network-side interface (NSI) and the hybrid fiber/coax (HFC) interface.

! NIC Module—Module that provides the Gigabit Ethernet interface and the Fast Ethernet

switching functions for the network-side interface.

! Chassis Control Module—Module that performs management and monitoring functions.

! Module ejector rail—Rail into which a module’s ejector tabs fit when a module is

installed in a slot.

! ESD strap connector—Location where you can insert an ESD ground strap.

! Air intake—Slotted openings along the front (removable) and sides of the chassis where

air is drawn into the chassis for cooling the installed modules and power supplies.

! Air intake faceplate—Slotted removable panel that covers the two front fan trays.

! Air intake faceplate clip—Retainer clip used to mount the air intake faceplate.

! Front fan tray—Fan assembly that forces air upward through the front of the chassis.

! Front fan tray LED—LED that shows the status of the front fan tray.

! Power supply ejector rail—Rail into which the power supply ejector tabs fit when a

power supply is installed in a bay.

! Midplane—Passive electrical interconnecting device for all modules in the chassis.

! Air management module—Module installed in an unused module slot to redirect the air

flow through the chassis and to reduce EMI emissions.

! Card guide—Used to align a module or power supply while it is being inserted into its

slot or bay.

! Power supply—Converts AC or DC power supplied through the power transition modules

into the DC voltages required by the modules.

! Power supply faceplate—Panel along the top of the chassis that covers the power

supplies.

! Power supply faceplate clip—Retainer clip used to mount the power supply faceplate.

! Power supply bay—Chassis bay in which a single hot-swappable power supply is

inserted.

! Power supply filler panel—Panel covering an empty power supply bay.

! Cable channel—Channel through the top of the chassis that is used to route the network

cables from the rear of the chassis to the front.

! Cable guide—Guide used to route the network cables between the cable channel and the

lower opening in the power supply faceplate.