http://blogs.digium.com/2012/11/14/how-to-install-asterisk-11-on-ubuntu-12-4-lts/
Last week I put up an install guide for Asterisk 11 on CentOS 6. Asterisk 11 is the latest LTS release of Asterisk with many great new features and long term support! To follow up on the previous tutorial, I’ve put together a step by step guide for Ubuntu 12.04. Although most of the steps are similar there are a few differences. This tutorial will work for Ubuntu, Debian and Debian-based distributions. View the CentOS guide for Redhat-based distributions. Watch the video for a screencast of my terminal session to see the install live with an explanation of each step. Below you’ll find the commands are printed for you to copy and paste.
For this install I am using Asterisk 11.0.1 and will be compiling from source on Ubuntu 12.04.1.
Before you begin the install process you will want to be sure that your server OS is up to date. When the update completes the server will reboot.
apt-get update && apt-get upgrade -y && reboot
Next you will want to resolve basic dependencies. (More information on Asterisk dependencies.)
apt-get install build-essential wget libssl-dev libncurses5-dev libnewt-dev libxml2-dev linux-headers-$(uname -r) libsqlite3-dev uuid-dev
Download the source tarballs. These commands will get the current version of DAHDI, libpri and Asterisk.
cd /usr/src/ wget http://downloads.asterisk.org/pub/telephony/dahdi-linux-complete/dahdi-linux-complete-current.tar.gzwget http://downloads.asterisk.org/pub/telephony/libpri/libpri-1.4-current.tar.gzwget http://downloads.asterisk.org/pub/telephony/asterisk/asterisk-11-current.tar.gz
Extract the files from the tarballs
tar zxvf dahdi-linux-complete* tar zxvf libpri* tar zxvf asterisk*
Install DAHDI
cd /usr/src/dahdi-linux-complete* make && make install && make config
Install libpri
NOTE: libpri 1.4.13 won’t compile on Ubuntu 12.04 due to a bug (https://issues.asterisk.org/jira/browse/PRI-145). See the video for how to apply a patch to fix the bug. (Edit: libpri 1.4.14 has been released with this bug fix included. If you are a using 1.4.14 or later you should not encounter this bug.)
cd /usr/src/libpri* make && make install
Install Asterisk. Select your options when the menuselect command runs. Then select “Save & Exit” and the install will continue.
cd /usr/src/asterisk* ./configure && make menuselect && make && make install && make config && make samples
Start DAHDI
/etc/init.d/dahdi start
Start Asterisk and connect to the CLI
/etc/init.d/asterisk start asterisk -rvvv
Verify your installation by checking for the DAHDI and libpri versions on the Asterisk CLI
*CLI> dahdi show version DAHDI Version: 2.6.1 Echo Canceller: HWEC *CLI> pri show version libpri version: 1.4.13
Congratulations! You now have Asterisk 11 running on Ubuntu 12.04. To continue configuring Asterisk check out the quick start guide or take a look at the official Digium online training.