Dialog dialog = tid.getDialog();
CSeqHeader cseq = (CSeqHeader) response.getHeader(CSeqHeader.NAME);
Request ackRequest = dialog.createAck(cseq.getSeqNumber());
logger.info("Ack request to send = " + ackRequest);
logger.info("Sending ACK");
dialog.sendAck(ackRequest);
Thread.sleep(100);
Request inviteRequest = dialog.createRequest(Request.INVITE);
((SipURI) inviteRequest.getRequestURI()).removeParameter("transport");