Fixes issue 28

git-svn-id: https://svn.java.net/svn/jsip~svn/trunk@2293 8e71dc83-d81e-6649-80f2-80b843a9b2be
Fixes Issue 122

JSIP repo https://java.net/jira/browse/JSIP-456

git-svn-id: https://svn.java.net/svn/jsip~svn/trunk@2294 8e71dc83-d81e-6649-80f2-80b843a9b2be