Occasionally a test failure is encountered during SipExchange ci.ant run. It has been observed on at least some occasions that duplicate 200 OK answer messages are involved (stack trace showed the first answer message received was fine but the second one produced errors - both showed being received during the same millisecond). Duplicate 200 OK answer messages occur due to the JAIN SIP stack version used by the last SipUnit release having Issue 218 (200 OK retransmission within 1 milisecond).
The next SipUnit release sipunit.jar needs to be picked up and SipExchange ci.ant runs performed to weed out any other possible causes of intermittent autotest failures.
