(If you don't have linux install follow this link http://shomail.blogspot.com/2011/09/ubuntu-installation.html)
Most Asterisk
configurations are composed of three main packages : the main Asterisk program
(asterisk), the telephony drivers (Dahdi), and the PRI libraries (libpri).
If you plan on a pure
VoIP network, the only real requirement is the asterisk package, but we
recommend installing all three packages; you can choose what modules to
activate later. Dahdi required if you are using analog or digital hardware as a
timing source.
The libpri library is
optional unless you’re using ISDN PRI interfaces, and you may save a small
amount of RAM if you don’t load it, but we recommend that it be installed in conjunction
with the dahdi package for completeness.
Before installing above 3 packages, following packages had been
installed:
linux-source (needed if
you are going to recompile the linux kernel)
linux-headers (needed
for compiling dahdi)
openssl
ssh
build-essential
libncurses5-dev
you may install above 6
packages using command apt-get e.g.: apt-get install openssl
Obtaining
the Source Code
The best place to get source code for Asterisk and its packages
is directly from the http://www.asterisk.org web site or FTP
server.
The easiest way to
obtain the most recent release is
through the use of the program wget
Note that we will be
making use of the /usr/src/ directory to extract and compile the Asterisk
source, although some system administrators may prefer to use /usr/local/src. Also
be aware that you will need root access to write files to the /usr/src/
directory and to install Asterisk and its associated packages.
To obtain the latest
release source code via wget, enter the following commands on the command line:
# cd /usr/src/
# wget
http://downloads.asterisk.org/pub/telephony/asterisk/asterisk-1.8.2.3.tar.gz
# wget http://downloads.asterisk.org/pub/telephony/dahdi-linux-complete/releases/dahdi-linux-complete-2.4.0+2.4.0.tar.gz
# wget
http://downloads.asterisk.org/pub/telephony/libpri/releases/libpri-1.4.11.5.tar.gz
Extracting the Source Code
The packages you
downloaded from the FTP server are compressed archives containing the source
code; thus, you will need to extract them before compiling. If you didn’t download
the packages to /usr/src/, either move them there now or specify the full path to
their location. We will be using the GNU tar application to extract the source
code from the compressed archive. This is a simple process that can be achieved
through the use of the following commands:
#tar –xvzf
asterisk-1.8.2.3.tar.gz
#tar –xvzf
dahdi-linux-complete-2.4.0+2.4.0.tar.gz
#tar –xvzf
libpri-1.4.11.5.tar.gz
Compiling
Dahdi
This is a
simple-to-install 'complete' DAHDI kit for Linux users. It is designed to be a
drop-in replacement for users used to building Zaptel 1.2 or 1.4 for their
system without specifying any special build options, file locations, or
anything else. If you need to influence the build or installation process in
any way outside the defaults, you will need to use the installation steps
specific to the dahdi-linux and dahdi-tools packages separately (both of which
are located in subdirectories of the dahdi-complete package).
To install this
package, execute these commands:
# cd
/usr/src/dahdi-version
# make all
# make install
# make config
Compiling
libpri
The libpri libraries do
not make use of the autoconf build environment thus, the installation is
simplified. libpri is used by various makers of Time Division Multiplexing
(TDM) hardware, but even if you don’t
have the hardware installed, it is safe to compile and install this library.
You must compile and install libpri before Asterisk, as it will be detected and
used when Asterisk is compiled. Here are the commands (replace version with
your version of libpri):
# cd
/usr/src/libpri-version
# make clean
# make
# make install
Compiling
Asterisk
Once you’ve compiled
and installed the dahdi and libpri packages (if you need them), you can move on
to Asterisk. This section walks you through a standard installation.
# cd
/usr/src/asterisk-version
# make clean
# ./configure
# make all
# make install
# make samples
Run the make samples
command to install the default configuration files. Installing these files (instead of
configuring each file manually) will allow
you to get your Asterisk system up and running much
faster. Many of the default values are fine for Asterisk.
Running
Asterisk
Once you’ve successfully
installed asterisk, simply type:
#asterisk
