yum install epel-release
yum install mISDN-devel
yum install rpm-build
yum groupinstall "Development Tools"
yum remove epel-release
mkdir -p ~/rpmbuild/{BUILD,RPMS,SOURCES,SPECS,SRPMS}
echo '%_topdir %(echo $HOME)/rpmbuild' > ~/.rpmmacros

Now download the FreePBX SRPM and the patch. We also download mISDNuser, it makes building Asterisk easier if this is available. The filenames here are current at time of writing but you should check for newer ones as appropriate. The Asterisk version and the patch version *must* match.

cd ~/rpmbuild/SOURCES
wget http://download.opensuse.org/tumbleweed/repo/src-oss/suse/src/mISDNuser-2.0.19-1.7.src.rpm
wget http://docs.acsdata.co.nz/asterisk-cisco/includes/cisco-usecallmanager-13.10.0.patch
wget http://yum.freepbxdistro.org/pbx/SRPMS/asterisk/13/asterisk13-13.10.0-1.shmz65.1.117.src.rpm



Then it's just a case of unpack the files, tell FreePBX about the new patch, compile the files and install them:

rpm --nomd5 -ivh ~/rpmbuild/SOURCES/asterisk13-13.10.0-1.shmz65.1.117.src.rpm
rpm --nomd5 -ivh ~/rpmbuild/SOURCES/mISDNuser-2.0.19-1.7.src.rpm
yum-builddep ~/rpmbuild/SPECS/mISDNuser.spec
rpmbuild -bp ~/rpmbuild/SPECS/mISDNuser.spec
rpmbuild -ba ~/rpmbuild/SPECS/mISDNuser.spec
rpm -Uvh ~/rpmbuild/RPMS/x86_64/libmisdn1-*.rpm
rpm -Uvh ~/rpmbuild/RPMS/x86_64/mISDNuser*.rpm
yum-builddep ~/rpmbuild/SPECS/asterisk13.spec
rpmbuild -bp ~/rpmbuild/SPECS/asterisk13.spec
nano ~/rpmbuild/SPECS/asterisk13.spec
[locate the first instance of the word "Patch12" and add this exact line directly below it:]
Patch13: cisco-usecallmanager-13.10.0.patch
[then search for "patch12" (note the change in case) and add this exact line directly below it:]
%patch13 -p1
[save the file and close the editor]
rpmbuild -bp ~/rpmbuild/SPECS/asterisk13.spec
rpmbuild -ba ~/rpmbuild/SPECS/asterisk13.spec
rpm -Uvh ~/rpmbuild/RPMS/x86_64/asterisk13-[a-l]*.rpm --force
rpm -Uvh ~/rpmbuild/RPMS/x86_64/asterisk13-[n-r]*.rpm --force
rpm -Uvh ~/rpmbuild/RPMS/x86_64/asterisk13-t*.rpm --force
rpm -Uvh ~/rpmbuild/RPMS/x86_64/asterisk13-voicemail-13*.rpm --force