How to install asterisk on ubuntu 18.04

Asterisk is a well known Open Source software for free pabx or free voip server

Install all required package for asterisk

sudo apt-get install git curl wget  libnewt-dev libssl-dev libncurses5-dev \
> subversion  libsqlite3-dev build-essential libjansson-dev libxml2-dev  uuid-dev

sudo apt policy asterisk
[sudo] password for mmomon:
asterisk:
  Installed: (none)
  Candidate: 1:13.18.3~dfsg-1ubuntu4
  Version table:
     1:13.18.3~dfsg-1ubuntu4 500
        500 http://id.archive.ubuntu.com/ubuntu bionic/universe amd64 Packages


Download the asterisk package

mmomon@mmomon:~$ curl -O http://downloads.asterisk.org/pub/telephony/asterisk/asterisk-15-current.tar.gz
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 26.3M  100 26.3M    0     0   104k      0  0:04:17  0:04:17 --:--:--  209k

Extract the downloaded package

mmomon@mmomon:~$ tar xvf asterisk-15-current.tar.gz 

Run the prereq install script

 mmomon@mmomon:~/asterisk-15.7.1$ sudo ./contrib/scripts/install_prereq install

Build the asterisk from the source code

mmomon@mmomon:~/asterisk-15.7.1$ sudo su 

root@mmomon:/home/mmomon/asterisk-15.7.1# ./configure 

root@mmomon:/home/mmomon/asterisk-15.7.1# make menuselect