An Alert Call is a 1:1 call, but it is used for non-critical communication by alerting the recipient rather than barging in on a call. The recipient can choose to accept the call or not.
Select the
Contacts List
tab.
Left-click on the contact and then select
Start Alert Call
.
A pop-up notification appears with an option to cancel the call while waiting for a response.
An Alert Call signal is sent to the contact.
If the contact accepts, you are placed in the call.
If the contact rejects the call, the call is canceled.