Answering incoming conversation can be done in two ways, after which "onConversationStarted" event is fired. First it needs to be checked if conversation has canAnswer capability, and if it does, then call either TelephonyConversation.answerAudio or TelephonyConversation.answerVideo, as it is shown in the snippet below:
var conversation;
// ...
// Here we have retrieved conversation "onConversationIncoming" event.
// ...
if(conversation.capabilities.canAnswer)
{
// Answer incoming conversation with audio only.
conversation.answerAudio();
// Answer incoming conversation with both video and audio.
// conversation.answerVideo();
}
var conversation;
// ...
// Here we have retrieved conversation through "onConversationIncoming" event.
// ...
if(conversation.capabilities.canReject)
{
// Reject incoming conversation.
conversation.reject();
}