1. Update the System:

   • Log in to your CentOS 9 server using SSH or open a terminal.

   • Run the following command to update the system packages:

     sudo yum update -y

2. Install Dependencies:

   • Install the required dependencies for Asterisk by running the following command:

     sudo yum install -y epel-release dmidecode gcc-c++ ncurses-devel libxml2-devel make wget openssl-devel newt-devel kernel-devel sqlite-devel libuuid-devel gtk2-devel jansson-devel binutils-devel

3. Download Asterisk:

   • Change to the /usr/src directory:

     cd /usr/src

   • Download the latest version of Asterisk (replace XX with the appropriate version number):

     sudo wget http://downloads.asterisk.org/pub/telephony/asterisk/releases/asterisk-XX-current.tar.gz

   • Extract the downloaded file:

     sudo tar -zxvf asterisk-XX-current.tar.gz

4. Compile Asterisk:

   • Change to the extracted Asterisk directory:

     cd asterisk-XX*/

   • Run the following commands to configure and compile Asterisk:

     sudo contrib/scripts/get_mp3_source.sh
     sudo ./configure
     sudo make menuselect
     sudo make
     sudo make install

5. Install Additional Asterisk Modules:

   • Run the following command to install additional Asterisk modules:

     sudo make samples

6. Set Asterisk User and Group Permissions:

   • Run the following command to create the Asterisk user and group:

     sudo groupadd asterisk
     sudo useradd -r -d /var/lib/asterisk -g asterisk asterisk
     sudo usermod -aG audio,dialout asterisk
     sudo chown -R asterisk.asterisk /var/{lib,log,run,spool}/asterisk /usr/lib/asterisk /etc/asterisk
     sudo chmod -R 750 /var/{lib,log,run,spool}/asterisk /usr/lib/asterisk /etc/asterisk

7. Start Asterisk:

   • Start the Asterisk service by running the following command:

     sudo systemctl start asterisk

8. Enable Asterisk at Startup:

   • Enable the Asterisk service to start automatically on system boot:

     sudo systemctl enable asterisk

9. Configure Firewall:

   • If you have a firewall enabled, allow the necessary ports for Asterisk. For example, to allow SIP (port 5060) and IAX (port 4569), run the following commands:

     sudo firewall-cmd --permanent --add-port=5060/udp
     sudo firewall-cmd --permanent --add-port=4569/udp
     sudo firewall-cmd --reload

10. Verify Asterisk Installation:

    • Check the status of Asterisk by running the following command:

      sudo asterisk -rvvv

    • You should see the Asterisk console. Type core show version to confirm the version installed.

11. Now you can install Voice Apps

    mkdir -p /var/lib/voiceapps/bin/res

    mkdir -p /var/lib/voiceapps/conf

    useradd -d /var/lib/voiceapps -s /sbin/nologin voiceapps

    cd /usr/src/Sacco_CRM/src/va2/lib

    make

    cd /usr/src/Sacco_CRM/src/va2/src

    make

    sudo cp asterisk.service /etc/systemd/system/.

    sudo chown root:root /etc/systemd/system/asterisk.service

    sudo systemctl enable asterisk

    sudo systemctl start asterisk

    cp /usr/src/Sacco_CRM/src/va2/bin/muu /var/lib/voiceapps/bin/.

    cp /usr/src/Sacco_CRM/src/va2/bin/res/* /var/lib/voiceapps/bin/res/.

    chown -R voiceapps:voiceapps /var/lib/voiceapps

    cp /usr/src/Sacco_CRM/src/va2/conf/voiceapps.service /usr/lib/systemd/system/voiceapps.service

    chown root:root /usr/lib/systemd/system/voiceapps.service

    systemctl enable voiceapps

    systemctl start voiceapps

12. setup pjsip diff /usr/src/Sacco_CRM/src/chan_pjsip_ast_20.3.0.c /usr/src/asterisk-20.3.0/channels/chan_pjsip.c

    cp /usr/src/Sacco_CRM/src/chan_pjsip_ast_20.3.0.c /usr/src/asterisk-20.3.0/channels/chan_pjsip.c

    cd /usr/src/asterisk-20.3.0

    make

    make install

13. download codec Opus

    go to root folder

    download code opus

    wget https://downloads.digium.com/pub/telephony/codec_opus/asterisk-20.0/x86-64/codec_opus-20.0_current-x86_64.tar.gz

    view readme

    extract the file - tar

    ls cd codec - press tab