In today’s highly competitive business environment, customer experience is the new battleground for enterprises. Whether you’re running a call center, BPO, or customer support department, the ability to deliver seamless communication at scale defines your success. Proprietary contact center solutions often come with high licensing costs and limited customization, making them less appealing for businesses that need flexibility.
This is where open source contact center platforms—especially those built on Asterisk-based contact center software—stand out. Asterisk, a leading open-source PBX framework, provides enterprises with the freedom to design, deploy, and manage feature-rich contact centers without the burden of vendor lock-in.
In this article, we will explore the top open source Asterisk contact center software available today, highlighting their features, advantages, and suitability for enterprises.
What is an Asterisk Contact Center?
An Asterisk contact center is a customer interaction hub built on the Asterisk open-source telephony platform. Asterisk transforms any standard server into a powerful communications system, handling tasks like:
- Voice calls
- IVR (Interactive Voice Response)
- Automatic Call Distribution (ACD)
- Call Recording
- Predictive and Progressive Dialing
- VoIP/SIP Integration
Because Asterisk is open source, enterprises can customize the system to their exact requirements, making it an ideal choice for contact center deployments at scale.
Why Choose Asterisk-Based Contact Center Software for Enterprises?
There are several compelling reasons why Asterisk-based contact center software is preferred by enterprises over proprietary solutions:
1. Open Source Advantage
- No costly licensing fees.
- Freedom to customize as per business needs.
- Large developer community for support.
2. Scalability
- Supports thousands of concurrent calls.
- Easily deployable in multi-tenant environments.
- Cloud or on-premises flexibility.
3. Advanced Features
- Call routing, IVR, call recording, and real-time monitoring.
- Predictive dialing and automated outbound campaigns.
- CRM integration for better customer engagement.
4. Cost-Efficiency
- Significant savings compared to proprietary platforms.
- Lower operational and upgrade costs.
5. Enterprise-Grade Security
- Secure SIP and TLS support.
- Configurable firewalls, VPNs, and MFA integration.
Top Open Source Asterisk-Based Contact Center Software for Enterprises
Now let’s dive into the best open source contact center software powered by Asterisk, its unique features, and benefits for enterprises.
1. ICTContact – Multi-Tenant Asterisk Contact Center Software
ICTContact is one of the most advanced open source Asterisk-based contact center software platforms designed specifically for enterprises, call centers, and telecom service providers. It goes beyond traditional voice-only systems by offering a true omnichannel communication experience, enabling businesses to manage customer interactions across multiple platforms from a single interface.
Key Features of ICTContact
- Multi-Tenant Support
ICTContact supports multi-tenant deployments, allowing enterprises and service providers to host multiple organizations or clients on a single system. Each tenant gets complete isolation, independent dashboards, and customizable features, making it ideal for telecom operators or BPOs. - Omnichannel Communication
One of ICTContact’s strongest differentiators is its omnichannel support. Instead of limiting communication to phone calls, enterprises can engage customers through:- Voice Calls (Inbound & Outbound)
- SMS Campaigns
- Email Notifications
- WebRTC Voice call &Agent chat
- WhatsApp Chat Support
- Group Chat
This ensures that customers can interact with businesses on the channel of their choice, while agents manage all interactions from a single, unified dashboard.
- Auto Dialer Software
ICTContact provides multiple dialing modes:- Progressive Dialing – calls are initiated one by one after agent availability.
- Preview Dialing – allows agents to view customer information before initiating calls.
These dialing modes make it an excellent choice for telemarketing campaigns, customer surveys, and proactive outreach.
- Inbound Call Handling
Unlike many outbound-focused platforms, ICTContact also supports inbound call center features:- Automatic Call Distribution (ACD).
- Call queues and intelligent routing.
- Skill-based routing (direct calls to the most qualified agents).
- Call forwarding and voicemail management.
- IVR Studio
ICTContact includes an intuitive drag-and-drop IVR Studio that allows administrators to create custom call flows, self-service menus, and automated responses without deep technical knowledge.
- WebRTC Support
Agents can connect from anywhere using WebRTC-enabled browsers, eliminating the need for physical phones or third-party softphones. This feature is critical for remote teams and distributed enterprises. - WhatsApp Chat Integration
With WhatsApp business messaging support, ICTContact allows agents to handle real-time chats, send automated responses, and manage customer queries on one of the most widely used communication platforms globally. - Group Chat and Team Collaboration
ICTContact also supports internal group chat functionality, enabling teams and supervisors to collaborate in real time. This improves agent productivity, knowledge sharing, and overall contact center efficiency. - REST APIs for Integration
ICTContact offers robust REST APIs that allow seamless integration with:- CRM systems (SuiteCRM, Salesforce, ICTCRM).
- ERP solutions.
- Third-party applications and workflow automation tools.
2. FreePBX Contact Center Add-Ons
FreePBX, another Asterisk-based open source PBX system, can be extended with call center modules to function as a full contact center.
Key Features:
- Call recording and live monitoring.
- Call queues with advanced routing.
- CRM integration with SuiteCRM, SugarCRM, and Salesforce.
- Web-based agent dashboard.
- Customizable IVRs.
Why Enterprises Choose FreePBX:
It’s ideal for enterprises that already use FreePBX as their telephony system and want to expand into contact center functionality without switching platforms.
3. Issabel Contact Center
Issabel is a fork of the popular Elastix project and comes bundled with an Asterisk contact center suite.
Key Features:
- Pre-installed call center module.
- Agent and supervisor dashboards.
- Predictive dialing engine.
- Real-time monitoring tools.
- Call detail reports (CDRs).
Why Enterprises Choose Issabel:
Issabel is perfect for organizations seeking a ready-to-deploy Asterisk contact center with minimal configuration effort.
4. GoAutoDial
GoAutoDial is a community-driven open source contact center solution built on top of Asterisk, ideal for outbound and inbound campaigns.
Key Features:
- Predictive, progressive, and manual dialing.
- Real-time agent monitoring.
- Multi-campaign management.
- Web-based agent and admin portals.
- Call recording and reporting tools.
Why Enterprises Choose GoAutoDial:
Enterprises looking for a reliable and lightweight Asterisk contact center solution often adopt GoAutoDial due to its ease of use and community-driven support.
5. Vicidial
Vicidial is one of the most popular open source Asterisk-based contact center software platforms, used worldwide by enterprises and call centers.
Key Features:
- Inbound, outbound, and blended call handling.
- Multiple dialing modes (predictive, power, manual).
- Multi-language support.
- Real-time monitoring and call barging.
- Agent time and performance reports.
Why Enterprises Choose Vicidial:
Vicidial is highly scalable and suitable for large enterprises managing thousands of agents, making it a global leader among open source contact centers.
6. WombatDialer (with Asterisk Integration)
WombatDialer is not a standalone PBX but an outbound dialer system that integrates seamlessly with Asterisk.
Key Features:
- High-performance outbound campaigns.
- API-driven dialing.
- Multi-tenant and distributed setups.
- Flexible campaign scheduling.
Why Enterprises Choose WombatDialer:
It’s perfect for businesses that need advanced outbound campaign management while already running an Asterisk contact center.
Conclusion
Enterprises looking for a cost-effective, scalable, and customizable contact center solution should seriously consider Asterisk-based contact center software. With powerful options like ICTContact, FreePBX, Issabel, GoAutoDial, Vicidial, and WombatDialer, businesses can build a robust open source contact center tailored to their exact needs.
By adopting these solutions, enterprises gain:
- Full control over their communication infrastructure.
- Reduced costs compared to proprietary systems.
- Advanced features like predictive dialing, IVR, and CRM integration.
- Future-ready scalability with AI and omnichannel capabilities.
In short, open source Asterisk contact centers empower enterprises to deliver exceptional customer experiences while maintaining full flexibility and cost efficiency.