Should I use Ethernet or Wi-Fi to connect my BT110 device to the network?

You can use Ethernet, Wi-Fi, or both to connect your BT110 device to the network.  When using both the Ethernet and Wi-Fi, the Ethernet is the primary network interface, and the Wi-Fi is in standby and will be activated when the Ethernet connection to the network fails.  Upon the Ethernet interface becomes available again, the Ethernet resumes to be the primary interface and the WiFi goes back to be standing by.

Note, however, that when switching the interfaces, there will be IP address changes and will require the device to re-establish its connection to the AVS server, the ACM server, and the SIP Telephony proxy/server.  This process may take up to 1 minute to complete, during which the device may not be able to accept voice commands and any active calls during the network transition may be dropped. 

There are also other advanced network configuration options (e.g., dual-homed mode, VLAN, VPN).  Please see Advanced Network Configurations.  

Also note that if the Mobile App and the Tablet Controller need to be in the same subnet as the BT device.  Therefore, if the BT device Ethernet interface and the WiFi interface are connected to two different subnets, the Mobile App and the Tablet Controller can only communicate to the BT device when the network to which the interface is connected to is the same as that of the Mobile App and the Tablet Controller.