* if it isn't an ACK for a 2xx response
*
*/
} else {
if (!dialog.handleAck(transaction)) {
if(sipStack.isLooseDialogValidation()) {
if (sipStack.isLoggingEnabled()) {
sipStack.getLogWriter().logDebug(
"Dialog exists with loose dialog validation " + sipRequest.getFirstLine()
+ " isServerTransaction = " + true + " dialog = " + dialog.getDialogId());