If you don't want to follow these instructions and would prefer to download an image you can do so by downloading the image from Asterisk for Raspberry Pi Image.

The following instructions are based on Arch Linux ARM (archlinux-hf-2012-09-18.zip)

Write Image to SD Card

Using Win32DiskImager and the latest version of Arch Linux ARM from Raspberry Pi write the image to the SD card.

Once the image is written insert the SD card into the Raspberry Pi and boot. The device will get an IP address from DHCP.

Expand Partition

Now that the device has booted log on and change the default partition from 2 GB to the maximum partition of your SD card.

fdisk /dev/mmcblk0
d (delete)
2 (partition 2)
n (new)
p (primary partition)
2 (partition 2 as previously deleted)
enter (accept default start sector)
enter (accept default end sector)
w (write changes)

reboot

Once the rPi has rebooted

resize2fs /dev/mmcblk0p2
reboot

Swap File

As the rPi has limited RAM, either 256 or 512 depending on your version we'll create a swap file to allow application to use higher memory if required.

I would recommend allocating the size of the swap file to be that equal to the RAM size.

fallocate -l 256M /swapfile
chmod 600 /swapfile
mkswap /swapfile
swapon /swapfile

The swap file is now active. We now need to ensure that it is used at boot.

vi /etc/fstab

add the line to the file

/swapfile none swap defaults 0 0

RAM Sizes

The RAM can be slipt between the CPU and GPU as follows:

for 256MB version, 240/16, 224/32,  192/64, 128/128
for 512MB version, 496/16, 384/128, 256/256

The default for the 256MB version is 224/32. As we don't need any GPU power we'll change this to 240/16.

vi /boot/config.txt

add a line at the bottom

gpu_mem=16

Update OS

pacman -Syu
reboot

Utilities

Install utilities to help with setup/administration

pacman -S initscripts vim mlocate zip unzip

vi to vim

pacman -R vi
ln -s /usr/bin/vim /usr/bin/vi

Create ll alias

vi /root/.profile

add the line

alias ll="ls -la --color"

Enable Sound Card

vi /etc/rc.conf

add the line

MODULES=(snd-bcm2835)

Regional settings

Enable all AU and US entries, 4 lines

vi /etc/locale.gen

vi /etc/rc.conf
locale-gen

Time Synchronisation

cp /usr/share/zoneinfo/Australia/Brisbane /etc/localtime
pacman -R openntpd
pacman -S ntp
ntpdate ntp.bri.connect.com.au

vi /etc/rc.conf

remove hwclock and add ntpdate

Hostname

vi /etc/hostname
vi /etc/hosts

vi /etc/dhcpcd.conf

add the line: nohook resolv.conf
remove the line: nohook lookup-hostname

Network

vi /etc/conf.d/network

add the lines

interface=eth0
address=192.168.1.1
netmask=255.255.255.0
broadcast=192.168.0.255
gateway=192.168.1.254

vi /etc/systemd/system/network.service

add the lines

[Unit]
Description=Network Connectivity
Wants=network.target
Before=network.target

[Service]
Type=oneshot
RemainAfterExit=yes
EnvironmentFile=/etc/conf.d/network
ExecStart=/sbin/ip link set dev ${interface} up
ExecStart=/sbin/ip addr add ${address}/${netmask} broadcast ${broadcast} dev ${interface}
ExecStart=/sbin/ip route add default via ${gateway}
ExecStop=/sbin/ip addr flush dev ${interface}
ExecStop=/sbin/ip link set dev ${interface} down

[Install]
WantedBy=multi-user.target

systemctl disable dhcpcd@eth0.service
systemctl enable network.service

reboot

vi /etc/resolv.conf

add the lines

domain mydomain.com
search mydomain.com
nameserver 192.168.1.254

Asterisk Packages

pacman -S gcc make hgsvn libxml2 libnewt sqlite subversion mysql spandsp speex
systemctl enable mysqld.service
systemctl start mysqld.service

Secure mysql

/usr/bin/mysql_secure_installation

Free Memory

So Asterisk will compile we need to free as many applications as possible from memory

systemctl stop ntpd.service
systemctl stop mysqld.service

Install Asterisk

Download and install Asterisk. You can refer to Asterisk Install if required, but only Asterisk is required.

Set Asterisk to Automatic

vi /etc/rc.conf

and add asterisk to DEAMONS

logrotate

/etc/logrotate.d/asterisk

add the following lines to the file

/var/log/asterisk/messages /var/log/asterisk/*log {
   missingok
   notifempty
   rotate 12
   weekly
   create 0640 root root
   postrotate
       /usr/sbin/asterisk -rx 'logger reload' > /dev/null 2> /dev/null
   endscript
}

logger

vi /etc/asterisk/logger.conf

change from:

;dateformat=%F %T

to

dateformat=%F %T %Z

Sendmail

pacman -R heirloom-mailx
rm /etc/mail.rc.pacsave
pacman -S ssmtp

vi /etc/ssmtp/ssmtp.conf

and add the lines

mailhub=192.168.13.3
hostname=rpi.klaverstyn.com
FromLineOverride=yes

Edit aliases if required

vi /etc/ssmtp/revaliases

Install Apache

pacman -S apache php-apache php php-gd

vi /etc/httpd/conf/httpd.conf

and modify the following

AllowOverride All
DirectoryIndex index.php index.html index.htm index.html.var

systemctl enable httpd.service

Configure php

vi /etc/php/php.ini

uncomment

extension=mysqli.so
extension=mysql.so

vi /etc/httpd/conf/httpd.conf

add the following lines in thier respective sections

LoadModule php5_module modules/libphp5.so
Include conf/extra/php5_module.conf
AddHandler application/x-httpd-php .php

uncomment the following lines

TypesConfig conf/mime.types
MIMEMagicFile conf/magic

vi /etc/httpd/conf/mime.types

add the following line

application/x-httpd-php5		php php5

systemctl start httpd.service

Note: The web root is /srv/http/

CDR

Refer to the Call Detail Records page which will allow Asterisk to write the CDR records to the database.

aCDR

aCDR is a web appliction that allows you to search throught your CDR records. View the aCDR page on installation.

Backup Script

Refer to Asterisk Backup Shell Script for the script itself.

pacman -S smbclient

perl

NOTE: To install the perl module requires more RAM that what is available on the 256MM model of the rPi. Make sure you have a swap file otherwise this section will fail.

pacman -S perl cpan libyaml perl-yaml libyaml perl-libwww sox mpg123

Text to Speech

perl -MCPAN -e "install Bundle::LWP"
perl -MCPAN -e "install CGI::Util"

wget https://github.com/zaf/asterisk-googletts/blob/master/googletts.agi
mv googletts.agi /var/lib/asterisk/agi-bin/
chmod 755 /var/lib/asterisk/agi-bin/googletts.agi

fax2mail

cd /usr/src
wget http://search.cpan.org/CPAN/authors/id/R/RO/ROSCH/mime-construct-1.11.tar.gz
tar xzvf mime-construct-1.11.tar.gz
rm -f mime-construct-1.11.tar.gz
cd mime-construct-1.11
perl Makefile.PL
make install 
cd..

perl -MCPAN -e "install Bundle::LWP"
perl -MCPAN -e "install Proc::WaitStat"
perl -MCPAN -e "install MIME::Types"

wget http://www.klaverstyn.com.au/david/asterisk/files/fax2mail
mv fax2mail /usr/sbin/
chmod 755 /usr/sbin/fax2mail
mkdir /var/spool/asterisk/fax/

Reference

http://wiki.archlinux.org/index.php/Systemd
http://wiki.archlinux.org/index.php/Configuring_Network
http://wiki.archlinux.org/index.php/Beginners%27_Guide
http://wiki.archlinux.org/index.php/LAMP#PHP
http://raw.github.com/Evilpaul/RPi-config/master/config.txt

Asterisk for Raspberry Pi on ArchLinux

Contents

Write Image to SD Card

Expand Partition

Swap File

RAM Sizes

Update OS

Utilities

vi to vim

Create ll alias

Enable Sound Card

Regional settings

Time Synchronisation

Hostname

Network

Asterisk Packages

Secure mysql

Free Memory

Install Asterisk

Set Asterisk to Automatic

logrotate

logger

Sendmail

Install Apache

Configure php

CDR

aCDR

Backup Script

perl

Text to Speech

fax2mail

Reference

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