# cd /usr/local/src
# wget http://packages.asterisk.org/centos/6/current/x86_64/RPMS/asterisknow-version-3.0.1-2_centos6.noarch.rpm
# rpm -Uvh asterisknow-version-3.0.1-2_centos6.noarch.rpm
# yum update
# yum install asterisk asterisk-configs freepbx dahdi-tools --enablerepo=asterisk-11
# cd /usr/src/freepbx-2.11.0/
# ./install_amp
# chmod 755 /var/lib/asterisk/bin/retrieve_conf
# chmod 755 /var/www/html/admin/modules/framework/amp_conf/bin/retrieve_conf