VOS3000 Installation & Upgrade Guide – CentOS, Versions, Important Patch & Rollback

VOS3000 installation must be performed carefully to ensure system stability, security, and long-term scalability. Whether deploying a fresh server or upgrading an existing system, following best practices reduces downtime and operational risk.

🖥️ Supported Operating System for VOS3000

VOS3000 is designed to run on Linux environments. CentOS 6.x and CentOS 7.x are the most widely deployed and tested platforms. A clean OS installation is strongly recommended before deploying VOS3000.

⚙️ Pre-Installation Checklist

🧠 CPU and RAM allocated according to expected traffic
💾 Adequate disk space for CDR and database growth
🔥 Firewall ports prepared (see VOS3000 security configuration)
⏱️ Linux timezone and NTP correctly configured

📦 VOS3000 Installation Process

The installation package includes all required services: SIP server, database schema, web manager, and core billing components. After installation, administrators must verify service status and initial configuration.

Once installed, routing and billing must be configured. Refer to the detailed VOS3000 routing configuration guide to complete call flow setup.

🔄 Upgrading VOS3000 Versions

VOS3000 supports in-place upgrades between compatible versions, such as from 2.1.6.x to 2.1.8.x. Before upgrading, always back up:

🗄️ Database (CDR, rates, users)
⚙️ Configuration files
🔐 License files

🩹 Patch Management

Minor patches address performance improvements and bug fixes. Patches should be applied during low-traffic windows and verified through test calls.

⏪ Rollback Strategy

If an upgrade introduces unexpected behavior, a rollback plan ensures rapid service restoration. Rollback typically involves restoring the previous database snapshot and configuration files.