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Cisco 2800 Series
Wall mounting
Power Requirements
AC input voltage
AC input frequency
AC input current
AC input surge current
AC-IP maximum in-line
power distribution
AC-IP input current
AC-IP input surge current
DC input voltage
DC input current
Power dissipation—AC
without IP phone support
Power dissipation—AC
with IP phone support—
system only
Power dissipation—AC
with IP phone support—
IP phones
Power dissipation—DC
RPS
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Cisco 2801
No
2A (110V)
1A (230V)
120W
4A (110V)
2A (230V)
No DC Power Option
available
No DC Power Option
available
150W (511 BTU/hr)
150W (511 BTU/hr)
180W (612 BTU/hr)
Not applicable
No
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Page 9 of 19
Cisco 2811
Yes
100 to 240 VAC, autoranging
47–63 Hz
50A maximum, one cycle
(–48V power included)
160W
50A maximum, one cycle
(–48V power included)
24 to 60 VDC, autoranging positive or negative
8A (24V)
3A (60V)
Startup current 50A<10 ms
170W (580 BTU/hr)
210W (717 BTU/hr)
160W (546 BTU/hr)
180W (614 BTU/hr)
External only, connector for RPS provided by default
Cisco 2821
Cisco 2851
No
No
3A (110V)
2A (230V)
240W
360W
8A (110V)
4A (230V)
12A (24V)
5A (60V)
Startup current 50A<10 ms
280W (955
280W (955 BTU/hr)
BTU/hr)
310W (1058
370W (1262
BTU/hr)
BTU/hr)
240W (819
360W (1128
BTU/hr)
BTU/hr)
300W (1024
300W (1024
BTU/hr)
BTU/hr)