2N EasyGate IP User Manual page 80

6.3 VoLTE Calls
The VoLTE service provides the highest quality calls via the LTE network. The service
is available wherever there is an LTE signal.
Turn on the IMS function on the Network / VoLTE card to enable the VoLTE function
in the device. Data is enabled by the device by default, use the Network / WWAN card
to change the setting. Make sure that the Network technology value on the WWAN
card is always LTE (i.e. connection to LTE network) for the VoLTE calls.
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