====== hangup() ======
call.hangup() finishes current call, "hangs up the phone".

===== Arguments =====
call.hangup(reason, message):
  * reason: (optional) numeric response code describing reason of finishing the call
  * message: (optional) string verbal description of reason

Usually call.hangup() is called without any arguments, resulting in normal ending of call.

If call is ended due to a timeout, for example if no media is received from other end any more then the hangup can be given a reason: call.hangup(408, "Media timeout")

===== Returns =====
Nothing.

===== Events =====
call.hangup() raises event [[ixnx:wrtc:js:api:wrtc:onhungup|wrtc.onHungUp()]]

===== See Also =====
[[ixnx:wrtc:js:api:wrtc:hangup|wrtc.hangup()]]

[[ixnx:wrtc:js:api:wrtc:endgroupcall|wrtc.endGroupCall()]]