* function with Automatic Dialog Support.
*/
if (sipProvider.isAutomaticDialogSupportEnabled()
&& sipProvider.isDialogErrorsAutomaticallyHandled()
&& sipRequest.getToTag() == null) {
SIPServerTransaction sipServerTransaction = sipStack
.findMergedTransaction(sipRequest);
if (sipServerTransaction != null) {
this.sendLoopDetectedResponse(sipRequest, transaction);
return;
}