Network Handling and Requirements

VPN Recommendations

Configure VPN to connect over UDP
Use split tunneling configuration when possible
Do not set MTU limit unless necessary

The following table summarizes the expected behavior when you switch between access points or networks during an ongoing call.

Call Flows	Call behavior on the app for calling party	Call behavior on the app for receiving party
During an ongoing call, if you switch between access points of the same type and configuration within the same WiFi network having the same access password	The call will continue as normal.	The call will continue as normal.
During an ongoing call, if you switch between access points of different types within the same Wi-Fi network, or between different WiFi networks with different access passwords	The call is disconnected. Note: If you are not the one who switched between the access points, your screen will continue to display the ongoing call screen until you disconnect the call.	The call is disconnected. Note: If you are not the one who switched between the access points, your screen will continue to display the ongoing call screen until you disconnect the call.
During an ongoing call, if you switch to no network	The call is disconnected after 3 seconds.	The call is disconnected after 3 seconds.
During an ongoing call connected on WiFi if you switch to no network and then back to WiFi	The call will continue without audio and if switched back to WiFi within 3 seconds, the call may continue with audio.	The call will continue without audio and if switched back to WiFi within 3 seconds, the call may continue with audio.
During an ongoing call, if you switch between access points of the same network but of a different type; for example, if you switch from a WiFi network to a wired network or vice-versa	The call is disconnected. Note: If you are not the one who switched between the access points, your screen will continue to display the ongoing call screen until you disconnect the call.	The call is disconnected. Note: If you are not the one who switched between the access points, your screen will continue to display the ongoing call screen until you disconnect the call.

The voice service in the Mitel One application is VoIP-based (voice over IP); it uses your internet connection to route calls. Therefore a good signal strength is necessary to place or receive calls using the application. The following dBm values can be used as a reference to determine whether the signal strength is sufficient to successfully use the application.

Scenario	Signal Strength
Signal strength RSSI or dBm > = -50	Excellent
Signal strength RSSI or dBm > + -70 and < -50	Good
If none of the above conditions are met	Poor

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