// Your code will limp at 32 but it is best for debugging.
properties.setProperty("gov.nist.javax.sip.TRACE_LEVEL", "DEBUG");
try {
// Create SipStack object
sipStack = sipFactory.createSipStack(properties);
System.out.println("createSipStack " + sipStack);
} catch (PeerUnavailableException e) {
// could not find
// gov.nist.jain.protocol.ip.sip.SipStackImpl
// in the classpath