I would like too, but I am not sure what was wrong
The 2. time I ran following command I got it working
db yum_repositories set fws repository \
BaseURL http://repo.firewall-services.com/sme/ \
EnableGroups no GPGCheck no \
Visible yes status disabled
signal-event yum-modify
And then
yum --enablerepo=smecontribs --enablerepo=fws install smeserver-freepbx dahdi-linux-kmdl-$(uname -r)