Table A-1 lists the technical specifications for the Catalyst 2955 switches. Table A-2 and Table A-3 list the technical specifications for fiber-optic uplink ports. Table A-4 lists the regulatory agency approvals.
Table A-1 Technical Specifications for Catalyst 2955T-12, 2955C-12, and Catalyst 2955S-12 Switches
Environmental Ranges
Operating temperature
-40 to 140°F (-40 to 60°C)
Storage temperature
-40 to 185°F (-40 to 85°C)
Operating humidity
10 to 95% (noncondensing)
Shock
50 g at 11ms
Operating altitude
Up to 10,000 ft (3000 m)
Storage altitude
Up to 30,000 ft (9000 m)
Power Requirements
DC input voltages
24 V (18 V minimum to 32 V maximum range)
Note The DC-input power supply is an SELV circuit, and it can only be connected to another SELV circuit.
Power consumption
23 W (maximum)
102 Btus per hour
Physical Dimensions
Weight
3.1 lbs
Dimensions (W x D x H)
8.07 x 5.03 x 3.75 in.
Table A-2 Fiber-Optic Port Specifications for the Catalyst 2955C-12 Switch
Fiber-Port Power Levels
Catalyst 2955C-12 (100BASE-FX MM)
Optical transmitter wavelength
1300 nm1
Optical receiver sensitivity for 50/125-micron cabling
-33.5 to -11.8 dBm2
Optical receiver sensitivity for 62.5/125-micron cabling
-33.5 to -11.8 dBm
Optical transmitter power for 50/125-micron cabling
-23.5 to -14 dBm
Optical transmitter power for 62.5/125-micron cabling
