Installing asterisk 11.4.0 to Centos 6.4 (64 bit)

1. Initial Set Up

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

2. Update the System

yum -y update
yum groupinstall core
yum groupinstall base

3. Install Required Dependencies

yum install gcc gcc-c++ 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 sqlite-devel

4. Disabling SELINUX

sed -i s/SELINUX=enforcing/SELINUX=disabled/g /etc/selinux/config

5. Install PearDB

You must have php with php-pear. You can refer on this link

pear install db

NOTE: 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

5. Reboot Server

reboot

6. Download the Source Tarballs

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-1.4-current.tar.gz
git clone https://github.com/spditner/asterisk-11.4.0

7. Extract the Files

tar zxvf dahdi-linux-complete*
tar zxvf libpri*
unzip asterisk*

8. Install DAHDI and libpri

NOTE: For the next set of commands it is important to follow the proper order: DAHDI first, then libpri, then Asterisk.
Install DAHDI

cd /usr/src/dahdi-linux-complete*
make && make install && make config

Install libpri.

cd /usr/src/libpri*
make && make install

9. Install the Asterisk

Change to the Asterisk directory.

cd /usr/src/asterisk*

Use this command if you are installing Asterisk on 64bit CentOS.

./configure --libdir=/usr/lib64 && make menuselect && make && make install

OPTIONAL: If you ran into errors you will want to clean the install directory before recompiling.

make clean && make distclean

Once you have an error-free install, copy the sample files from the configs subdirectory into /etc/asterisk.

make samples

Then add the Asterisk start script to the /etc/init.d/ directory

make config

10. Start and Connect to the Asterisk

Start DAHDI.

service dahdi start

Start Asterisk.

service asterisk start

Connect to the Asterisk CLI.

asterisk -rvvv

sources: http://blogs.digium.com/2012/11/05/how-to-install-asterisk-11-on-centos-6/ http://wiki.freepbx.org/display/HTGS/Installing+FreePBX+on+Centos+6.3