Juniper Networks G10 CMTS User Manual

Page 33

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System Overview

G10 CMTS Hardware Overview

Rear Features

! HFC Connector Module—Module that functions as the DOCSIS Module’s physical access

to both the NSI and the HFC interfaces on the rear of the chassis.

! Switched I/O Module—Provides the same functions as an HFC Connector Module, but

provides four additional upstream F-connectors for the HFC cabling.

! NIC Access Module—Module that provides the network connections between the NIC

Modules and the HFC Connector Modules.

! Hard Disk Module—Contains the system nonvolatile memory implemented as a hard

disk. This module is installed opposite the Chassis Control Module.

! Rear fan tray—Fan assembly that forces air upward through the rear of the chassis.

! Rear fan tray LED—LED that shows the status of the rear fan tray.

! Air management panel—Panel installed over an unused module slot to redirect the air

flow through the chassis and to reduce EMI emissions.

! Air exhaust—Panel along the top and rear of the chassis where air is expelled from the

chassis for cooling.

! AC power transition module—Rear module that distributes the externally supplied AC

power to the midplane.

! AC power receptacle—AC power cord receptacle on AC power transition module.

! AC power switch—AC power On/Off switch that resides on the AC power transition

module.

! DC power transition module—Rear module that distributes the externally supplied DC

power to the midplane.

! DC power receptacle—DC power cord terminal block on DC power transition module.

! Chassis ground nuts—Location where the earth ground connection to the chassis is

made.