properties.setProperty("javax.sip.AUTOMATIC_DIALOG_SUPPORT", "off");
properties.setProperty("gov.nist.javax.sip.SIP_MESSAGE_VALVE", SipMessageValve.class.getCanonicalName());
try {
// Create SipStack object
sipStack = sipFactory.createSipStack(properties);
System.out.println("sipStack = " + sipStack);
} catch (PeerUnavailableException e) {
// could not find
// gov.nist.jain.protocol.ip.sip.SipStackImpl
// in the classpath