Installing System Admin on a minimal CentOS 7 system

Is it not possible to install the Sangoma System Admin module on a RHEL7/Centos7 system? I installed a base Centos7 minimal system, following the guide at
http://wiki.freepbx.org/display/FOP/Installing+FreePBX+13+on+CentOS+7
Then downloaded the schmooze repo according to the guide at
http://wiki.freepbx.org/display/FPG/Installation+on+CentOS+and+RHEL+based+systems

and edited the .repo file to override 7–>6 e.g.

sed -i 's/release=$releasever/release=6/' /etc/yum.repos.d/schmooze-commercial.repo

but when I execute

yum -y install php-5.3-zend-guard-loader sysadmin fail2ban incron ImageMagick 

I get these 2 errs

Error: Package: apcupsd-3.14.10-1.el6.x86_64 (schmooze-commercial) Requires: libnetsnmp.so.20()(64bit)
Error: Package: sysadmin-2.7.0-202.shmz65.1.40.noarch (schmooze-commercial) Requires: db4-utils

Is this an exercise in futility or is there a way to have this work? My main goal was to have a Centos7 system with the new System Firewall module working. Thank you.

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