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Cisco Aironet 1200 Series Access Point Hardware Installation Guide
OL-4310-05
Chapter 1 Overview
Hardware Features
Hardware Features
This section describes access point features. Refer to
Appendix C, “Access Point Specifications,”
for a
list of access point specifications.
Key hardware features of the 1200 series access point include:
•
Dual-Radio Operation, page 1-2
•
LEDs, page 1-3
•
Ethernet Port, page 1-3
•
Console Port, page 1-4
•
Power Sources, page 1-4
•
UL 2043 Certification, page 1-4
•
Anti-Theft Features, page 1-5
Dual-Radio Operation
The 1200 series access point can be initially configured at the factory for single- or dual-radio operation.
You can also upgrade an access point configured for single-radio operation to support dual-radio
operation using a 5-GHz radio module or a 2.4-GHz mini-PCI radio card. The access point supports one
radio of each type, but it does not support two 2.4-GHz or two 5-GHz radios.
The 2.4-GHz mini-PCI radio card connects to an internal mini-PCI slot and is available in two
configurations:
•
IEEE 802.11b mini-PCI radio card, hereafter called
802.11b radio
•
IEEE 802.11g mini-PCI radio card, herafter called
802.11g radio
–
Requires Cisco IOS Release 12.2(13)JA or later
The 5-GHz radio module connects to the access point’s modified card bus connector and is available in
three configurations:
•
IEEE 802.11a radio module with integrated antenna (low power), hereafter called the
RM20A radio
module
•
IEEE 802.11a radio module with integrated antenna, hereafter called the
RM21A radio module
–
Requires Cisco IOS Release 12.3(2)JA or later
•
IEEE 802.11a radio module with external RP-TNC antenna connectors, hereafter called the
RM22A
radio module
–
Requires Cisco IOS Release 12.3(2)JA or later
All 5-GHz radio modules incorporate an Unlicensed National Information Infrastructure (UNII) radio
transceiver operating in the UNII 5-GHz frequency bands. The RM20A and the RM21A radio modules
contain dual integrated omnidirectional antennas and directional antennas for diversity operation. The
802.11b or 802.11g radio is called
Radio0
and the 802.11a radio is called
Radio1
.
Note
Cisco Aironet CB20A client radios can sometimes fail to associate to the RM21A or RM22A radio
modules because the CB20A client radio does not support all the channels supported by the radio
modules. The default channel setting for the RM21A or RM22A radio module, least congested, often
results in the access point settling on one of these frequencies that the CB20A client radio does not
support: channel 149 (5745 GHz), channel 153 (5765 GHz), channel 157 (5785 GHz), and channel 161
