A2Billing Install guide


A2billingThis guide will show how to install A2Billing on a Redhat Enterprise Linux based system.  It is assumed you already have Linux and Asterisk and FreePBX installed using a procedure similar to this one.  We do not cover the installation of the callback daemon.


This guide was tested using the following software:

CentOS Linux v5
Asterisk v1.8.5
FreePBX v2.9
A2Billing v1.9.4

The following 2 diagrams illustrate A2billing inbound and outbound call flow.

A2billing inbound call flow


A2billing oubound call flow

All commands are assuming you are at run level 3 running in a shell as root.  In other words, not in a Gnome/KDE GUI and not using a limited access account.

PHP 5.2 is required and available via the CentOS 5 testing repository.  We shall create the testing respository file and configure it to only pull PHP packages.

nano /etc/yum.repos.d/centos-testing.repo

and add the following:

name=CentOS-5 Testing

Now update 
yum update

Install additional required packages if not already installed
yum -y install php-mcrypt perl-DBD-Pg
Change php folder permission back to what it was set to during Asterisk/FreePBX install before PHP update
chown -R asterisk:asterisk /var/lib/php/session
Add php timezone:
nano +639 /etc/php.ini

Uncomment date.timezone =
Copy your timezone from this link

Restart apache for the changes to take effect
service httpd restart
Get a2billing source

cd /usr/src
wget --no-check-certificate https://github.com/Star2Billing/a2billing/tarball/v1-current

Note the filename of the downloaded file and use it as follows:

tar zxvf Star2Billing-a2billing-v1-current-x-xxxxxx.tar.gz

Replace the 'x..x' with whatever the actual file name is called.
Rename the directory

mv Star2Billing-a2billing-xxxxx a2billing

Prepare MySQL database

cd /usr/src/a2billing

If you did not create a mysql root password during the asterisk install you should create one now.
mysqladmin -u root password 'rootmysqlpassword'

If you get access denied the password has already been set.  For PowerPBX install guide a password of 'abcdef' was used.  For distributions such as PiaF, the password is 'passw0rd'.  This will be the password the following commands will ask for.

mysql -u root -p < DataBase/mysql-5.x/a2billing-createdb-user.sql

which will create:
Database name: mya2billing
Database user: a2billinguser
Database user password: a2billing

Now run script to create tables and insert some basic configuration data

cd /usr/src/a2billing/DataBase/mysql-5.x

Answer questions as follows:
Enter Database Name: mya2billing
Enter Hostname: localhost
Enter UserName: root
Enter Password: 'mysqlrootpassword'

Now check that the database and 90+ tables have been created

mysql -u root -p mya2billing

>show tables;




| Tables_in_mya2billing     |
| cc_agent                  |
| cc_agent_commission       |
| cc_version                |
| cc_voucher                |
97 rows in set (0.00 sec)


cp /usr/src/a2billing/a2billing.conf /etc/
nano /etc/a2billing.conf

Make sure the following parameters are set as shown.

hostname = localhost
port = 3306
user = a2billinguser
password = a2billing
dbname = mya2billing
dbtype = mysql
Create files and set permissions
Only required if not using Asterisk Realtime.  If unsure then proceed as if you are not using Asterisk Realtime.

chmod 777 /etc/asterisk

touch /etc/asterisk/additional_a2billing_iax.conf
touch /etc/asterisk/additional_a2billing_sip.conf
echo \#include additional_a2billing_sip.conf >> /etc/asterisk/sip_custom.conf
echo \#include additional_a2billing_iax.conf >> /etc/asterisk/iax_custom.conf
chown -Rf asterisk:asterisk /etc/asterisk/additional_a2billing_iax.conf
chown -Rf asterisk:asterisk /etc/asterisk/additional_a2billing_sip.conf

Run sound installation script

cd /usr/src/a2billing/addons/sounds
chown -R asterisk:asterisk /var/lib/asterisk/sounds/

Add the following to /etc/asterisk/manager_custom.conf
You can also do it via the FreePBX Asterisk API module. 


Set up a2billing web folder

mkdir /var/www/html/a2billing
cp -Rf /usr/src/a2billing/admin /var/www/html/a2billing/admin
cp -Rf /usr/src/a2billing/agent /var/www/html/a2billing/agent
cp -Rf /usr/src/a2billing/customer /var/www/html/a2billing/customer
cp -Rf /usr/src/a2billing/common /var/www/html/a2billing/common

chown -R asterisk:asterisk /var/www/html/a2billing
chmod 755 /var/www/html/a2billing/admin/templates_c
chmod 755 /var/www/html/a2billing/customer/templates_c
chmod 755 /var/www/html/a2billing/agent/templates_c
Set up AGI
mkdir /var/lib/asterisk/agi-bin
cd /usr/src/a2billing/AGI               
cp a2billing.php /var/lib/asterisk/agi-bin/
chown -R asterisk:asterisk /var/lib/asterisk/agi-bin
chmod 755 /var/lib/asterisk/agi-bin/a2billing.php
ln -s /var/www/html/a2billing/common/lib /var/lib/asterisk/agi-bin/lib
Add the following extensions to /etc/asterisk/extensions_custom.conf. 

exten => s,1,GotoIf($["${OUT_${DIAL_TRUNK}:4:4}" = "A2B/"]?custom-freepbx-a2billing,${OUTNUM},1:2)
exten => s,2,MacroExit
exten => _X.,1,DeadAGI(a2billing.php,${OUT_${DIAL_TRUNK}:8})
exten => _X.,n,Hangup()
exten => _X.,1,Answer
exten => _X.,n,Wait(1)
exten => _X.,n,deadAGI(a2billing.php,1)
exten => _X.,n,Hangup
exten => _X.,1,deadAGI(a2billing.php,1,callback)
exten => _X.,n,Hangup
exten => _X.,1,deadAGI(a2billing.php,1,cid-callback,34) ;last parameter is the callback area code
exten => _X.,n,Hangup
exten => _X.,1,deadAGI(a2billing.php,1,all-callback,34) ;last parameter is the callback area code
exten => _X.,n,Hangup
exten => _X.,1,deadAGI(a2billing.php,1,did)
exten => _X.,2,Hangup
exten => _X.,1,deadAGI(a2billing.php,1,voucher)
exten => _X.,n,Hangup
exten => _X.,1,deadAGI(a2billing.php,1,did)
exten => _X.,2,Hangup
exten => _X.,1,deadAGI(a2billing.php,1)
exten => _X.,n,Hangup
Go into FreePBX GUI>Setup>Trunks>Add Custom Trunk give it a name and add the following dial string:
This is the trunk that is used to send calls out via A2Billing.  Simply select this trunk in outbound routes.  The /1 refers to which agi-conf is going to be used in /etc/a2billing.conf.

Add custom destinations to FreePBX via FreePBX GUI>Tools>Custom Destinations

Custom Destination: custom-a2billing,${EXTEN},1
Destination Quick Pick: (pick destination)
Description: A2Billing - Callthrough

Custom Destination: custom-a2billing-did,${EXTEN},1
Destination Quick Pick: (pick destination)
Description: A2Billing - DID
Start or restart FreePBX
amportal restart
Recurring Services
Recurring services are handled via the /etc/crontab. 
Make directory for A2Billing cron PID
mkdir -p /var/run/a2billing
chown asterisk:asterisk /var/run/a2billing

Copy cron files to some permanent location such as /usr/local
mkdir -p /usr/local/a2billing
cp -R /usr/src/a2billing/Cronjobs /usr/local/a2billing/
ln -sf /var/www/html/a2billing/common/lib /usr/local/a2billing/Cronjobs/lib

chown -R asterisk:asterisk /usr/local/a2billing

Add the cron jobs to /var/spool/cron/asterisk.
# update the currency table
0 6 * * * php /usr/local/a2billing/Cronjobs/currencies_update_yahoo.php
# manage the monthly services subscription
0 6 1 * * php /usr/local/a2billing/Cronjobs/a2billing_subscription_fee.php
# To check account of each Users and send an email if the balance is less than the user have choice.
0 * * * * php /usr/local/a2billing/Cronjobs/a2billing_notify_account.php
# this script will browse all the DID that are reserve and check if the customer need to pay for it.
# bill them or warn them per email to know if they want to pay in order to keep their DIDs.
0 2 * * * php /usr/local/a2billing/Cronjobs/a2billing_bill_diduse.php
# This script will take care of the recurring service.
0 12 * * * php /usr/local/a2billing/Cronjobs/a2billing_batch_process.php
# To generate invoices and for each user.
0 6 * * * php /usr/local/a2billing/Cronjobs/a2billing_batch_billing.php
# to proceed the autodialer
*/5 * * * * php /usr/local/a2billing/Cronjobs/a2billing_batch_autodialer.php
# manage alarms
0 * * * * php /usr/local/a2billing/Cronjobs/a2billing_alarm.php
# manage archive
0 12 * * * php /usr/local/a2billing/Cronjobs/a2billing_archive_data_cront.php
0 10 21 * * php /usr/local/a2billing/Cronjobs/a2billing_autorefill.php
15 * * * * php /usr/local/a2billing/Cronjobs/a2billing_batch_cache.php
Add log files:
mkdir -p /var/log/a2billing
touch /var/log/a2billing/cront_a2b_alarm.log
touch /var/log/a2billing/cront_a2b_autorefill.log
touch /var/log/a2billing/cront_a2b_batch_process.log
touch /var/log/a2billing/cront_a2b_archive_data.log   
touch /var/log/a2billing/cront_a2b_bill_diduse.log   
touch /var/log/a2billing/cront_a2b_subscription_fee.log   
touch /var/log/a2billing/cront_a2b_currency_update.log   
touch /var/log/a2billing/cront_a2b_invoice.log   
touch /var/log/a2billing/cront_a2b_check_account.log   
touch /var/log/a2billing/a2billing_paypal.log
touch /var/log/a2billing/a2billing_epayment.log
touch /var/log/a2billing/a2billing_api_ecommerce_request.log
touch /var/log/a2billing/a2billing_api_callback_request.log
touch /var/log/a2billing/a2billing_api_card.log
touch /var/log/a2billing/a2billing_agi.log
chown -R asterisk:asterisk /var/log/a2billing
Add index file to prevent browsing of root folder
touch /var/www/html/a2billing/index.html
Log into the webpage
user: root 
pass: changepassword
Change password
Go into System settings>Global list.  Go to the bottom left and set to display all.  From your web browser search for "asterisk_version".  It will find that setting twice.  One for Global group and one for agi-conf1 group.  Change both to "1_6" even if you are running Asterisk 1.8.  It does not recognize 1_8 but will still work with Asterisk 1.8.
Still in System settings>Global search for "realtime".  Change that setting to "no".
Asterisk Realtime
It may be beneficial to use Asterisk Realtime with A2billing.  If running Asterisk Realtime you do not need to reload every time you add/remove/change a customer.  Also it allows you to share the A2billing database between multiple Aserisk/FreePBX servers if you needed to do that.  I am guessing there are some performance advantages as well.  If you need to create many customers it just makes more sense to use a database instead of putting them all in a flat text file.

First add the following to /etc/asterisk/extconfig.conf

iaxusers => mysql,general,cc_iax_buddies
iaxpeers => mysql,general,cc_iax_buddies
sipusers => mysql,general,cc_sip_buddies
sippeers => mysql,general,cc_sip_buddies
extensions => mysql,general,cc_sip_buddies

Then add the following to /etc/asterisk/res_config_mysql.conf

dbhost =
dbname = mya2billing
dbuser = a2billinguser
dbpass = YOURPASS
dbport = 3306
;dbsock = /var/lib/mysql/mysql.sock


Assuming (as we did in this guide) that the dbname=mya2billing, dbuser=a2billinguser, dbpassword=YOURPASSword.  Double check that these settings match /etc/a2billing.conf and substitute as necessary.
Now restart freepbx/asterisk with "amportal restart"
To check if this is working:
From Asterisk CLI>
>core show config mappings
Should produce something along the lines of:
Config Engine: mysql
===> extensions (db=general, table=cc_sip_buddies)
===> iaxpeers (db=general, table=cc_iax_buddies)
===> iaxusers (db=general, table=cc_iax_buddies)
===> sippeers (db=general, table=cc_sip_buddies)
===> sipusers (db=general, table=cc_sip_buddies)
>realtime load sipusers name 1234567890
Where 1234567890 is one of your existing A2billing account numbers should produce:
                            Column Name  Column Value
          --------------------  --------------------
                            id  1
                    id_cc_card  1
                          name  1234567890
                   accountcode  1234567890
                      regexten  1234567890
                      amaflags  billing
                      callerid  NXXNXXXXXX
                   canreinvite  YES
                       context  a2billing
                      dtmfmode  RFC2833
                          host  dynamic
                  rtpkeepalive  0
In the A2Billing GUI go into System settings>Global and search for "realtime".  Change that setting to "yes".