Asterisk 11 Installation on CentOS 6

1. CentOS Updates
Update your CentOS 6 Server for any possible unimplemented updates.
yum update -y

2. Disabling SELinux
You can use any text editor (VIM etc) to commit this change. Go to /etc/selinux/config and
change SELINUX=enforcing to SELINUX=disabled
This can also be done by using command line:
sed -i s/SELINUX=enforcing/SELINUX=disabled/g /etc/selinux/config

3. Reboot
Once the aforementioned change is committed and the file is updated, reboot the system using:

4. Installation of Basic Dependencies
Asterisk 11.0.0 requires some prerequisite dependencies. Here is the command line to install them:
yum install -y make wget openssl-devel ncurses-devel newt-devel libxml2-devel kernel-devel gcc
gcc-c++ sqlite-devel

5. Downloading Your Asterisk Source Code
Move to directory /usr/src by given command:
cd /usr/src/
and then download the Source Code tar balls using these commands (one by one or at a time):

6. Extraction of Downloaded Files
Extract the downloaded tar balls to their corresponding directories using:
tar zxvf dahdi-linux-complete*
tar zxvf libpri*
tar zxvf asterisk*

7. DAHDI Installation
DAHDI (Digium Asterisk Hardware Device Interface) can be installed using the command line:
cd /usr/src/dahdi-linux-complete*
make && make install && make config

8. LibPRI Installation
In order to enable your BRI, PRI and QSIG based hardware, you will be needing PRI Library or LibPRI.
You can install these libraries using:
cd /usr/src/libpri*
make && make install

9. Changing Asterisk Directory
Now you have to move back to the Asterisk Installation Directory:
cd /usr/src/asterisk*

10. Running Configure Script for Asterisk
At this point, you need to know your CentOS 6 Architecture (32 or 64 Bit). In many cases you are aware
of it. In case you are not, try this command:
uname -a
For 32 Bit, you will be getting response like:
2.6.18-238.12.1.el5 #1 SMP Tue May 31 13:23:01 EDT 2011 i686 i686 i386 GNU/Linux
For 64 Bit, system will respond with something like:
2.6.18-238.19.1.el5 #1 SMP Fri Jul 15 07:31:24 EDT 2011 x86_64 x86_64 x86_64 GNU/Linux
Based on your OS Architecture, go ahead with these commands for Asterisk Configuration Script. For 32
./configure && make menuselect && make && make install
For 64 Bit:
./configure –libdir=/usr/lib64 && make menuselect && make && make install

11. Installing Sample Files
Sample files are great resource specially for the newbies. Install Sample Files using:
make samples
Once done, add the Asterisk Install Script in directory /etc/init.d/ using:
make config

12. Starting DAHDI
To start DAHDI Device Drivers, use:
service dahdi start

13. Start Asterisk
Finally, start Asterisk:
service asterisk start
Do your stuff by connecting to the Asterisk Console:
asterisk -rvvv