Cisco Aironet 2800 Series Deployment Manual page 9

Choosing the Right Access Point
Modularity and Smart Antenna Connector Ports
When a smart antenna connector is installed, the XOR radio (the radio that is defined in software as Radio 0)
now has its RF switched to the smart antenna connector.
Figure 10: External connector ports on AP 2800e and 3800e
Cisco Aironet Series 2800/3800 Access Point Deployment Guide
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