Cisco cBR Series Hardware Installation Guide

connecting cables, or replacing or upgrading components). Otherwise, allow 36 inches (91.44 cm) of
access to remove field-replaceable units.
• Maintain a minimum clearance of 4 inches (10.16 cm) on the front, and rear of the chassis for the cooling
air inlet and exhaust ports, respectively. In addition, there is a small air inlet area on the front right side
of the chassis in front of the mounting ear and a small exhaust area on the rear left hand side.
Figure 24: Minimum Clearance Area
• Avoid placing the chassis in an overly congested rack or directly next to another equipment rack; otherwise,
the heated exhaust air from the other equipment can enter the inlet air vents and cause a high temperature
condition inside the router.
Cisco Converged Broadband Routers Hardware Installation Guide
52
Prepare to Install
General Rack Installation Guidelines

Cisco cBR Series Specifications

General

Category	Network Router
Modular Design	Yes
Operating System	Cisco IOS XE
Model Examples	cBR-8, cBR-4
Product Series	cBR Series
Purpose	Converged Broadband Router
DOCSIS Support	DOCSIS 3.1
Redundancy	Yes
Management	Cisco Prime
Product Family	cBR Series
Downstream Frequency Range	Up to 1.2 GHz
Upstream Frequency Range	Up to 204 MHz
Modulation Schemes	QAM
Power Supply	Redundant AC or DC power supplies
Operating Temperature	0°C to 40°C
Storage Temperature	-40°C to 70°C
Humidity	5 to 95% noncondensing