Cisco Cisco Aironet 1200 Access Point 安装指南
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The 5-GHz radio module connects to the access point’s modified card bus
connector and is available in three versions:
connector and is available in three versions:
•
Low power IEEE 802.11a radio module with integrated antenna (RM20A
radio module)
radio module)
•
Enhanced IEEE 802.11a radio module with dual integrated antennas
(RM21A radio module)
(RM21A radio module)
– Requires Cisco IOS Release 12.3(2)JA or later
•
Enhanced IEEE 802.11a radio module with dual external RP-TNC
antenna connectors (RM22A radio module)
antenna connectors (RM22A radio module)
– Requires Cisco IOS Release 12.3 (2)JA or later
Tip
If you are upgrading to an 802.11g radio or an RM21A or RM22A
radio module, make sure you are running the correct Cisco IOS
version before you install the radio or module. If your access point
is running an earlier version, it will not recognize the radio or
module and continually boot.
radio module, make sure you are running the correct Cisco IOS
version before you install the radio or module. If your access point
is running an earlier version, it will not recognize the radio or
module and continually boot.
All 5-GHz radios incorporate an Unlicensed National Information Structure
(UNII) radio transceiver operating in the UNII 5-GHz frequency bands. The
RM20A and RM21A contain dual integrated omnidirectional antennas for
(UNII) radio transceiver operating in the UNII 5-GHz frequency bands. The
RM20A and RM21A contain dual integrated omnidirectional antennas for