Hi, anyone know how to download asterisk SVN-branch-1.8-r331578M or any have download link
The M means it was locally modified, so it will be impossible to get that exact version.
Use an svn client with parameters:
svn co -r 331578 http://svn.digium.com/svn/asterisk/branches/1.8
to download the unmodified version of the source code.
You can replace co with export, if you don’t want the SVN metadata.
Thanks , Dear David 