Add Display Name in From header (https://groups.google.com/group/doubango/browse_thread/thread/93ae4d3df41cc722)

git-svn-id: http://sipml5.googlecode.com/svn/trunk@192 63d8a0da-676c-2731-e3aa-b417aa27da68
Adds support for DTMF

git-svn-id: http://sipml5.googlecode.com/svn/trunk@193 63d8a0da-676c-2731-e3aa-b417aa27da68
Fix issue 71

git-svn-id: http://sipml5.googlecode.com/svn/trunk@194 63d8a0da-676c-2731-e3aa-b417aa27da68