SCCPv2 is in continous development !
You can browse current SVN sources at http://svn.chan-sccp.org
or download a stable package (not often updated) at How to download latest SVN to your pbx:
once logged on as root, please do the following:

cd /usr/src
svn co svn://svn.chan-sccp.org/trunk SCCPv2

next if you want to compile the sources, do the following:

cd /usr/src/SCCPv2/
make clean; make install

Please answer to all question selecting the features you want to include in your chan_sccp channel driver.