Cisco 8861 Deployment Manual page 152

Auto mode will scan both 2.4 GHz and 5 GHz channels and attempt to associate to the access point with the strongest
signal.
2.4 GHz mode will only scan 2.4 GHz channels and 5 GHz mode will only scan 5 GHz channels, then will attempt to
associate to an available access point.
It is recommended to set the frequency band on the Cisco IP Phone 8861 and 8865 to 5 GHz when wanting to utilize
the 5 GHz frequency band only, which prevents scanning and potentially roaming to the 2.4 GHz frequency band.
•
In the IPv4 setup or IPv6 setup, Dynamic Host Configuration Protocol (DHCP) or static IP settings can be configured.
Select Apply after making the necessary changes or Revert to discard the changes.
•
If option 150 or 66 is not configured to provide the TFTP Server's IP address via the network's DHCP scope, then set
Alternate TFTP to On and enter the IP address for the TFTP Server.
Select Apply after making the necessary changes or Revert to discard the changes.
Cisco IP Phone 8861 and 8865 Wireless LAN Deployment Guide
152