openSIPS

Self-Hosted

Open-source SIP server for real-time communication

Overview

openSIPS is a high-performance, open-source SIP server for real-time communication (VoIP, video calls, instant messaging). It handles routing, load balancing, authentication, and session management, ideal for PBX systems, call centers, or unified communication platforms. Deployable via Docker, bare metal, or cloud, it integrates with MySQL/PostgreSQL and supports WebRTC, NAT traversal, and presence. Lightweight and scalable, it manages thousands of concurrent sessions, with a modular architecture for custom workflows and active community-backed updates.

Self-Hosting Resources

Find Official Image on Docker Hub View Source & Docs

Below is a reference structure for docker-compose.yml. ⚠️ Do NOT run blindly. Replace placeholders with official values.

docker-compose.template.yml TEMPLATE


version: '3'
services:
  opensips:
    image: <OFFICIAL_IMAGE_NAME>:latest
    container_name: opensips
    ports:
      - "8080:<APP_INTERNAL_PORT>"
    volumes:
      - ./data:/app/data
    restart: unless-stopped

Key Features

High-performance SIP routing & session management
WebRTC and NAT traversal compatibility
Scalable load balancing & failover
Extensible modular architecture

Frequently Asked Questions

? Is openSIPS hard to install?

openSIPS can be installed via pre-built packages, Docker, or source. Docker simplifies deployment, but configuring advanced features (routing rules, modules) requires SIP protocol knowledge and CLI familiarity, making it challenging for beginners.

? Is it a good alternative to proprietary SIP servers like Cisco CUCM?

Yes—openSIPS offers core SIP functionality (routing, authentication, scalability) at no cost. It’s highly customizable via modules, though it lacks the graphical management tools of proprietary options like Cisco CUCM.

? Is openSIPS completely free?

Yes—openSIPS is licensed under GPLv2, so it’s free to use, modify, and distribute for personal or commercial purposes. No licensing fees apply, though hosting or support services may incur costs.

Top Alternatives

Cisco Unified Communications Manager Search Google

Avaya Aura Session Manager Search Google

Tool Info

Pricing Open Source

Category Communication - SIP

Platform Self-Hosted

Pros

⊕ Fully open-source (no licensing costs)
⊕ High scalability for large deployments
⊕ Flexible customization via modules

Cons

⊖ Steep learning curve for non-technical users
⊖ Limited graphical UI (CLI/API-driven)