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Learn How to Deploy Issabel PBX on Rocky Linux VPS! This article provides a guide to deploy Issabel PBX on Rocky Linux VPS. Here is a complete, start-to-finish deployment guide for installing Issabel PBX + Contact Center on a Rocky Linux VPS (recommended: Rocky Linux 8.x). 🚀 Overview: What You’re Deploying Issabel PBX is a full VoIP + unified communications system (based on Asterisk) that includes PBX, call center, email, and more Issabel 5 is built on Rocky Linux 8 with long-term support Contact Center is an addon module that enables call queues, campaigns, agents, and predictive dialing Deploy Issabel PBX on Rocky Linux VPS To deploy Issabel PBX on Rocky Linux VPS, follow the steps below: VPS Requirements (Production Recommended) Minimum 2 vCPU 4 GB RAM 40 GB SSD 1 public IP Recommended (Contact Center) 4+ vCPU 8–16 GB RAM Low-latency network (VoIP critical) Open Ports dnf install firewalld -y systemctl start firewalld firewall-cmd --zonepublic --permanent --add-port22/tcp firewall-cmd --zonepublic --permanent --add-port80/tcp firewall-cmd --zonepublic --permanent --add-port443/tcp firewall-cmd --zonepublic --permanent --add-port8088-8089/tcp firewall-cmd --zonepublic --permanent --add-port5060/udp firewall-cmd --zonepublic --permanent --add-port10000-20000/udp firewall-cmd --reload Deploy Rocky Linux (Minimal Install) Use: Rocky Linux 8.x Minimal ISO Set: Static IP Hostname (VERY important for PBX) Example: hostnamectl set-hostname pbx.example.com Update system: dnf update -y Prepare the Server Install dependencies: dnf install -y epel-release dnf install -y wget nano git yum-utils dnf groupinstall "Development Tools" -y Disable SELinux (required for Issabel): sed -i 's/SELINUXenforcing/SELINUXdisabled/g' /etc/selinux/config reboot Install Issabel 5 (Rocky Linux) Official NetInstall Script Run: dnf -y install wget wget -O - http://repo.issabel.org/issabel5-netinstall.sh | bash This script: Installs Asterisk + PBX stack Configures web UI Installs MariaDB + Apache Installer Configuration (Interactive) During install, you will set: Required Credentials MySQL root password Issabel admin password Recommended Options Asterisk version: latest available Enable firewall integration Enable Fail2Ban (security) Access Issabel Web Interface Issabel Login Screen After install: http://YOUR_SERVER_IP Login: Username: admin Password: (set during install) Post-Install Critical Configuration Set Static IP (mandatory) Edit: nmtui Configure Firewall firewall-cmd --permanent --add-servicehttp firewall-cmd --permanent --add-servicehttps firewall-cmd --permanent --add-port5060/udp firewall-cmd --permanent --add-port10000-20000/udp firewall-cmd --reload Enable Services systemctl enable asterisk systemctl enable httpd systemctl enable mariadb Configure Basic PBX Issabel Dashboard In Web UI: Create Extension PBX → Extensions → Add Extension Example: Extension: 1001 Secret: password Configure SIP Use PJSIP (recommended) Install Issabel Contact Center Module Verify PBX is working Contact Center requires: Working extensions SIP trunk (optional but recommended) Install Module In Issabel UI: Addons → Issabel Addons → Contact Center Or CLI: issabel-addons install contactcenter Register Issabel Instance Required before enabling contact center: Go to System → Registration Configure Contact Center Create Agents Contact Center → Agents Create Queues Contact Center → Queues Create Campaign Inbound (support) Outbound (dialing) Assign: Agents Queue Dialplan Configure VoIP Provider (SIP Trunk) PBX → Trunks Example (generic SIP): usernameYOUR_SIP_USER secretYOUR_SIP_PASS hostprovider.com Security Hardening (CRITICAL) Enable Fail2Ban dnf install fail2ban -y systemctl enable fail2ban systemctl start fail2ban Restrict SIP Access firewall-cmd --permanent --add-rich-rule'rule family"ipv4" source address"YOUR_IP" port protocol"udp" port"5060" accept' Disable Anonymous SIP Edit: /etc/asterisk/pjsip.conf Performance Optimization Increase File Limits echo "* soft nofile 65535" >> /etc/security/limits.conf echo "* hard nofile 65535" >> /etc/security/limits.conf Tune RTP /etc/asterisk/rtp.conf Verify Installation Check services: systemctl status asterisk systemctl status httpd systemctl status mariadb Check Asterisk: asterisk -rvvv Test Call Flow Register 2 softphones (Zoiper, Linphone) Call extension-to-extension Test queue routing Test campaign dialing ⚠️ Common Issues Installer fails Ensure Rocky Linux 8 (not 9) No audio Open RTP ports (10000–20000 UDP) Contact Center not working PBX not fully configured Instance not registered 🧠 Key Notes Issabel 5 is designed specifically for Rocky Linux environments Contact Center depends on proper PBX setup first Always deploy on clean VPS (no control panel) ✅ Done You now have: Fully functional Issabel PBX Contact Center module (agents, queues, campaigns) Production-ready VoIP system Conclusion You now know how to deploy Issabel PBX on Rocky Linux VPS.

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