3.2 Call control options
The Bubble app also supports several call control features, which are available in the pop-up notification as buttons.
* 
For more information about other call options, consult the Red Cactus documentation.
 
Button
Description
Close the Bubble pop-up notification
Decline or hang up the call
Answer a ringing call (only supported with softphone as primary device)
Hold the call
Unhold the call
Forward or transfer (blind or attended) the call