Voip phone system - Asterisk Voip

Jan. 5, 2013 - PRLog -- How to Install Asterisk on CentosMost Asterisk configurations are composed of three main packages : the main Asterisk program (asterisk), the Zapata telephony drivers (zaptel), 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.

>> Read more   http://asteriskvoipsystem.org/how-to-install-asterisk/

Step by step Install FreePBX

# Step 1:

Download package and create database
cd /usr/src
wget asteriskvoipsystem.org/downloads/freepbx-2.8.1.tar.gz
tar zxf freepbx-2.8.1.tar.gz
cd freepbx-2.8.1
mysqladmin create asterisk
mysqladmin create asteriskcdrdb
mysql asterisk < SQL/newinstall.sql
mysql asteriskcdrdb < SQL/cdr_mysql_table.sql
mysql
GRANT ALL PRIVILEGES ON asteriskcdrdb.* TO asterisk@localhost IDENTIFIED BY ‘changepassword’;
GRANT ALL PRIVILEGES ON asterisk.* TO asterisk@localhost IDENTIFIED BY ‘changepassword’;
flush privileges;
\q
pear channel-update pear.php.net
pear install DB MDB2 MDB2#mysql
mkdir -p /var/lib/asterisk/run

#Fix Asterisk Music On Hold
ln -s /var/lib/asterisk/moh /var/lib/asterisk/mohmp3

# Step 2:

Install FreePBX

cd /usr/src/freepbx-2.8.1
./install_amp

setenforce 0

#Username asterisk Password changepassword
#Change httpd apache user to asterisk

chmod 777 /etc/amportal.conf
cd /var/lib/asterisk
chown -R asterisk:asterisk *
chmod -R 777 *
cd /var/www/html
chown -R asterisk:asterisk *
chmod -R 777 *
chown -R asterisk:asterisk /var/lib/php/session
chown -R asterisk:asterisk /var/spool/asterisk/*

# Step 3: Edit Asterisk IAX2 Settings Add Other Options in FreePBX
calltokenoptional = 0.0.0.0/0.0.0.0
maxcallnumbers = 16382
requirecalltoken = no

Make a basic call
sip.conf
Rename the sip.conf file (Location: /etc/asterisk/sip.conf) to sip_old.conf for example. Create a new sip.conf empty file and insert the following lines into the file:
[general]
>> Read more http://asteriskvoipsystem.org/make-a-basic-call/

Build a simple call – Dialplan
The dialplan is truly the heart of any Asterisk system, as it defines how Asterisk handles inbound and outbound calls. In a nutshell, it consists of a list of instructions or steps that Asterisk will follow. Unlike traditional phone systems, Asterisk’s dialplan is fully customizable. To successfully set up your own Asterisk system, you will need to understand the dialplan.

The dialplan is specified in the file called extensions.conf (Location: /etc/asterisk/extensions.conf).

>> Read more     http://asteriskvoipsystem.org/build-a-simple-call-dialplan/