Site Environment - Cisco 2851 - Integrated Services Router User Manual

General Site Requirements
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Table 1
Table 1 Power Requirements for Cisco 2800 Series Routers
Router
Cisco 2801 without IP
phone power output
Cisco 2801 with IP
phone power output
Cisco 2811 without IP
phone power output
Cisco 2811 with IP
phone power output
Cisco 2821 without IP
phone power output
Cisco 2821 with IP
phone power output
Cisco 2851 without IP
phone power output
Cisco 2851 with IP
phone power output
Cisco 2811, 2821, and
2851

Site Environment

Cisco 2800 series routers can be placed on a desktop or installed in a rack. This Cisco 2811 router can
also be wall mounted. The location of your router and the layout of your equipment rack or wiring room
are extremely important considerations for proper operation. Equipment placed too close together,
inadequate ventilation, and inaccessible panels can cause malfunctions and shutdowns, and can make
maintenance difficult. Plan for access to both front and rear panels of the router.
When planning your site layout and equipment locations, remember the precautions described in the next
section
environmentally caused shutdowns. If you are currently experiencing shutdowns or an unusually high
number of errors with your existing equipment, these precautions may help you isolate the cause of the
failures and prevent future problems.
Preinstallation Requirements and Planning for Cisco 2800 Series Routers
4
All units include a 6-foot (1.8-meter) electrical power cord. (A label near the power inlet indicates
the correct voltage, frequency [AC-powered systems only], current draw, and power dissipation for
the unit.)
lists power requirements for Cisco 2800 series routers.
Power Source
AC
AC
AC
DC
AC
AC
DC
AC
AC
DC
AC
Backup power:
Cisco RPS-675 Redundant
Power System
"Site Configuration," to help avoid equipment failures and reduce the possibility of
Input Power
100 - 240 VAC, 2.0 A, 50 - 60 Hz
100 - 240 VAC, 5.0 A, 50 - 60 Hz
100 - 240 VAC, 2.0 A, 50 - 60 Hz
24 - 60 VDC, 8 A, positive or negative
100 - 240 VAC, 4.0 A, 50 - 60 Hz
100 - 240 VAC, 3.0 A, 50 - 60 Hz
24 - 60 VDC, 12 A, positive or negative
100 - 240 VAC, 8.0 A, 50 - 60 Hz
100 - 240 VAC, 3.0 A, 50 - 60 Hz
24 - 60 VDC, 12 A, positive or negative
100 - 240 VAC, 8.0 A, 50 - 60 Hz
100 VAC, 10 A, or 240 VAC, 6 A
Input Voltage
Tolerance Limits
90 - 264 VAC
90 - 264 VAC
90 - 264 VAC
18 - 72 VDC
90 - 264 VAC
90 - 264 VAC
18 - 72 VDC
90 - 264 VAC
90 - 264 VAC
18 - 72 VDC
90 - 264 VAC
OL-5784-01