Install Centos 6.5

Initial System Setup

You MUST run all of these commands as the root user!

You MUST disable selinux.  selinux can cause strange behavior during the install

Disable selinux

In /etc/sysconfig/selinux , change the following lines:

sed -i 's/\(^SELINUX=\).*/\SELINUX=disabled/' /etc/sysconfig/selinux

reboot, and verify the selinux status by running 'sestatus'. It should say:

SELinux status: disabled

Update Your System

yum -y update
yum groupinstall core
yum groupinstall base

Install Additional Required Dependencies

yum install gcc gcc-c++ lynx bison mysql-devel mysql-server php php-mysql php-pear php-mbstring tftp-server httpd make ncurses-devel libtermcap-devel sendmail sendmail-cf caching-nameserver sox newt-devel libxml2-devel libtiff-devel audiofile-devel gtk2-devel subversion kernel-devel git subversion kernel-devel php-process crontabs cronie cronie-anacron wget vim php-xml uuid-devel libtool sqlite-devel unixODBC mysql-connector-odbc

IPTables

Keeping IPTables turned off indefinitely is strongly discouraged. You will incur the wrath of high fees and hackers

You must disable the default iptables.  You can re-enable it later, once you have made the appropriate changes.  Information on iptables can be found with a quick Google search.  If iptables is left running, it will (at very least) block you from accessing the web interface.
 

See the current status:   

chkconfig iptables --list

Disable iptables:

chkconfig --level 0123456 iptables off

Stop the service (this skips rebooting again):

service iptables stop

Auto Start MySQL

You must have mysql running for freepbx to operate normally.  You need to set it to start at boot time. with the following command:

chkconfig --level 345 mysqld on 

Then start mysqld if you don't plan on rebooting during the installation phase:

service mysqld start

Auto Start Apache

You will want Apache running, so you can access the FreePBX admin interface,  You need to set it to start at boot time. with the following command:

chkconfig --level 345 httpd on 

Then start apache if you don't plan on rebooting during the installation phase:

service httpd start

Install PearDB

pear channel-update pear.php.net
pear install db-1.7.14

You may receive a warning:

WARNING: "pear/DB" is deprecated in favor of "pear/MDB2"

At this time it is safe to ignore that message

Reboot server

reboot

Install Dependencies for Google Voice (If needed/wanted)

Install iksemel

cd /usr/src
wget https://iksemel.googlecode.com/files/iksemel-1.4.tar.gz
tar xf iksemel-*.tar.gz
cd iksemel-*
./configure
make
make install

Add the Asterisk User

adduser asterisk -M -c "Asterisk User"

Install and Configure Asterisk

Download Asterisk source files.

cd /usr/src
wget http://downloads.asterisk.org/pub/telephony/dahdi-linux-complete/dahdi-linux-complete-current.tar.gz
wget http://downloads.asterisk.org/pub/telephony/libpri/libpri-current.tar.gz
wget http://downloads.asterisk.org/pub/telephony/asterisk/asterisk-13-current.tar.gz
git clone https://github.com/akheron/jansson.git
wget http://www.pjsip.org/release/2.2.1/pjproject-2.2.1.tar.bz2

Compile and install DAHDI and LibPRI

If you don't have any physical hardware you don't need to run these commands, however, it is still suggested to compile the modules, to allow you to add hardware later.

cd /usr/src
tar xvfz dahdi-linux-complete-current.tar.gz
tar xvfz libpri-current.tar.gz
rm -f dahdi-linux-complete-current.tar.gz libpri-current.tar.gz
cd dahdi-linux-complete-*
make all
make install 
make config
cd /usr/src/libpri-*
make
make install

Compile and install pjproject

If you are doing this on a 64 bit system, please note that you MUST set the following during configure:

--libdir=/usr/lib64
cd /usr/src
tar -xjvf pjproject-2.2.1.tar.bz2
cd pjproject-2.2.1
CFLAGS='-DPJ_HAS_IPV6=1' ./configure --prefix=/usr --enable-shared --disable-sound\
  --disable-resample --disable-video --disable-opencore-amr --libdir=/usr/lib64
make dep
make
make install

Compile and Install jansson

If you are doing this on a 64 bit system, please note that you MUST set the following during configure:

--libdir=/usr/lib64
cd /usr/src/jansson
autoreconf -i
./configure --libdir=/usr/lib64
make
make install

Compile and install Asterisk

If you are doing this on a 64 bit system, please note that you MUST set the following during configure:

--libdir=/usr/lib64
cd /usr/src
tar xvfz asterisk-13-current.tar.gz
rm -f asterisk-13-current.tar.gz
cd asterisk-*
contrib/scripts/install_prereq install
./configure --libdir=/usr/lib64
contrib/scripts/get_mp3_source.sh
make menuselect

You will be prompted at the point to pick which modules to build. Most of them will be enabled, but if you want to have MP3 support, you need to manually turn on 'format_mp3' on the first page.

After selecting 'Save & Exit' you can then continue

make
make install
make config
ldconfig

Install Asterisk-Extra-Sounds

Note that this installs the (8khz) 'wav' soundfiles and G722 (High Definition 'Wideband') audio.

mkdir -p /var/lib/asterisk/sounds
cd /var/lib/asterisk/sounds
wget http://downloads.asterisk.org/pub/telephony/sounds/asterisk-extra-sounds-en-wav-current.tar.gz
tar xfz asterisk-extra-sounds-en-wav-current.tar.gz
rm -f asterisk-extra-sounds-en-wav-current.tar.gz
# Wideband Audio download 
wget http://downloads.asterisk.org/pub/telephony/sounds/asterisk-extra-sounds-en-g722-current.tar.gz
tar xfz asterisk-extra-sounds-en-g722-current.tar.gz
rm -f asterisk-extra-sounds-en-g722-current.tar.gz

Install and Configure FreePBX

Download and extract FreePBX.

cd /usr/src
wget http://mirror.freepbx.org/modules/packages/freepbx/freepbx-12.0-latest.tgz
tar vxfz freepbx-12-latest.tgz

Set ownership permissions.

chown asterisk. /var/run/asterisk
chown -R asterisk. /etc/asterisk
chown -R asterisk. /var/{lib,log,spool}/asterisk
chown -R asterisk. /usr/lib/asterisk
chown -R asterisk. /usr/lib64/asterisk
mkdir /var/www/html
chown -R asterisk. /var/www/

A few small modifications to Apache.

sed -i 's/\(^upload_max_filesize = \).*/\120M/' /etc/php.ini
cp /etc/httpd/conf/httpd.conf /etc/httpd/conf/httpd.conf_orig
sed -i 's/^\(User\|Group\).*/\1 asterisk/' /etc/httpd/conf/httpd.conf
service httpd restart

Configure Asterisk database in MYSQL. 

cd /usr/src/freepbx
export ASTERISK_DB_PW=amp109
mysqladmin -u root create asterisk 
mysqladmin -u root create asteriskcdrdb 

Set permissions on MYSQL database.

mysql -u root -e "GRANT ALL PRIVILEGES ON asterisk.* TO asteriskuser@localhost IDENTIFIED BY '${ASTERISK_DB_PW}';"
mysql -u root -e "GRANT ALL PRIVILEGES ON asteriskcdrdb.* TO asteriskuser@localhost IDENTIFIED BY '${ASTERISK_DB_PW}';"
mysql -u root -e "flush privileges;"

Restart Asterisk and install FreePBX.

cd /usr/src/freepbx
./start_asterisk start
./install_amp --installdb --username=asteriskuser --password=${ASTERISK_DB_PW}
amportal chown
amportal a ma installall
amportal a reload
amportal a ma refreshsignatures
amportal chown

If you see an error about "Uncaught exception 'RuntimeException' with message 'gpg took too long to run.'" it is safe to run "amportal a ma installall" again.

Finally, one last mod and start FreePBX.

ln -s /var/lib/asterisk/moh /var/lib/asterisk/mohmp3
amportal restart

Start FreePBX

Navigate: 

http://yourlocalipaddress/html or if you prefer http://localhost/admin

Install and Setup Commercial Modules

Enable the FreePBX Commercial yum repos

wget -P /etc/yum.repos.d/ -N http://yum.schmoozecom.net/schmooze-commercial/schmooze-commercial.repo

yum clean all to clean out yum cache so it will find out new RPMs

yum clean all

yum install needed RPMs for Commercial Modules

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

Restart Apache and Install Sysadmin

service httpd restart
amportal a ma download sysadmin
amportal a ma install sysadmin

For Further information see: Installation on CentOS and RHEL based systems