Asterisk PBX Practical Guide + Twilio Elastic SIP Trunking

Download and install PuTTY, FileZilla, and a preferred editor (Visual Studio Code, Sublime, or Notepad++), with Windows as the baseline and SSH options for Mac OS.

Install asterisk pbx on CentOS via ssh, configure static network settings, disable SELinux, then download, compile, and install Asterisk 18 with modules, start the service, and use the Asterisk cli.

Install free G.729 and G.723 codecs on Asterisk 18 to enable outbound calls and prevent Singapore errors, then restart the service and verify with core show translation.

Explore setting up softphones and hardphones for asterisk pbx, comparing free and premium features, enabling auto answer for click-to-call projects, and preparing extensions for login on the asterisk server.

Install VestaCP to secure your Asterisk server with firewall and fail2ban before configuration; run the install via ssh, use port 8083, and access the VestaCP web panel.

Configure VestaCP for Asterisk on the admin account, create a new user, add a domain, set up DNS records, install SSL, and prepare a basic web hosting environment.

Enable asterisk security by configuring the firewall to open port 5060 (tcp/udp), setting up fail2ban, restarting iptables, and validating SSL access for the subdomain while using Vesta CP and SSH.

Disable the SIP ALG on your modem to ensure outbound calls work with Asterisk; check both modems and disable SIP ALG in voice settings.

Configure the asterisk system by backing up and editing the codec conf, logger, and extensions files via ssh and filezilla, then set up pjsip extensions and voicemail.

Log in extensions on softphone and hardphone, register 101–103, and conduct local calls with two-way audio using PJSIP, blink cell phone, and asterisk dial plan.

Demonstrates how fail2ban blocks and unblocks a home IP and resolves login issues on Vesta CP, FileZilla, and SSH. Shows excluding the ISP IP and using VPN to regain access.

Download and install extra sound packages for Asterisk, store them in the Asterisk sounds directory, test playback with a dialplan, and explore recording and custom sound directories for future tasks.

Register for a Twilio account, purchase a business phone number, and set up elastic SIP trunking by configuring credentials, IP ACLs, and trunk origination and termination for Asterisk.

Update the asterisk configuration to integrate with Twilio elastic sip trunking, including Pjsip endpoints and credentials. Test outbound and inbound calls, verify latency, and configure call transfers.

Learn how to record outbound and inbound calls with Asterisk by configuring the dial plan, using mix monitor, and saving wav recordings for download.

Organize call recordings by year, month, and day with a modified dial plan and new storage path in asterisk, enabling browser access via a mini http server.

Enable the http feature on the asterisk mini server and adjust httpd.conf. Access and download call recordings in the browser using port 8088 and a unique key.

Configure odbc to save cdr data from asterisk into a mysql database using phpmyadmin and mariadb, import cdr table, and verify the odbc connection and cdr adaptive odbc.

Add custom fields to the CDR table in Asterisk, including call type, custom date time, and recording URL, and enable external applications to query CDR data with proper URL encoding.

Implement a call barging feature in Asterisk to allow extension 102 to listen in on a call started by extension 101, using the Europe dial plan.

Learn to clean an Asterisk server by truncating growing log files, including fail2ban and sqlite logs, and automate monthly maintenance with a bash script and a cron job.

Create a new root user with sudo permissions, disable the main root login, and verify access by logging in as the new user.

Monitor asterisk ram usage, noting eight gb total and five gb free for extensions. Manage storage by backing up call recordings to a local computer and deleting old files.