ClusterPBX™ Enterprise System
Large Organization, Scalable and Flexible IP-PBX On-Premise Solution.

Optimized for Enterprise Corporations with Centralized or Multiple Locations
The ClearlyIP ClusterPBX™ Enterprise VoIP system is designed for large enterprise organizations, for a complete single or multi-tenant platform, load-balanced, and failover-enabled IP-PBX system. ClusterPBX™ accommodates advancing businesses with scalable phone solutions for business growth.
ClearlyIP ClusterPBX™ Enterprise is the solution you need, whether you are continuing with your existing Asterisk system or migrating from a proprietary phone system.
Scalability
ClusterPBX™ Enterprise is flexible and allows you to add extensions as your business grows, from 1 to 50,000+ users.
Web-Based Interface
Easy Web Interface: Calling, Extension Management, Phone Management, and more.
Failover-Enabled System
In the event that your PBX fails, your standby clone of your PBX becomes active minimizing downtime and data loss.
Customizable
Set up your dedicated ClusterPBX™ on your own private servers and gain the ability to customize and manage the system for your business needs.
Enterprise Premium Support
Dedicated priority support with a guaranteed response time, so you know exactly how long it will take to address your issue.
Single or Multi-Tenant
Offering a scalable solution for multi-organization or single entity deployments.
The ClusterPBX™ Enterprise Solution
The ClusterPBX™ Enterprise VoIP solution allows you to provide multiple instances of the ClearlyIP VoIP technology to multiple groups of users. You provide VoIP service to unlimited phones via your the enterprise offering and enjoy modern technology that scales exponentially.
Control your ClusterPBX™ Enterprise system through a robust web interface and benefit from large-scale provisioning for your changing business landscape. ClusterPBX™ Enterprise configurations are fully customizable and user profiles can be established for specific phone destinations and features.
- Supports 200 – 50,000+ Users
- Powerful SIP Trunking Options with ClearlyIP SIP Trunks
- Get an external number with Direct Inward Dialing (DID)
ClusterPBX™ Enterprise Advantages
ClusterPBX™ Enterprise VoIP system troubleshooting is easier than ever before, with real-time phone logs and status reports available when you need them. The ClusterPBX™ Enterprise solution is built from OpenSIPS, Asterisk, MySQL, Rails and ExtJS.
Our dedicated on-site hosted phone solution provides many advantages allowing you to realize a wide variety of customizable and scalable features at great cost savings.
- Scalability: Create your enterprise system and provide service to your users. Easily and reliably scale your multi-department or location solution and add new users to your ClusterPBX™ Enterprise system.
- Control: Control your ClusterPBX™ Enterprise system through a robust web interface, and you benefit from large-scale provisioning for your changing business landscape. ClusterPBX™ Enterprise configurations are fully customizable, and user profiles can be established for specific phone destinations and features.
- Customizable: Set up your dedicated ClusterPBX™ Enterprise on your own private servers and gain the ability to customize and manage the system for your business needs. Built on rock-solid open source technology, ClusterPBX™ Enterprise gives you the ability to develop your own integrations and use the community as a resource.

Have questions about ClusterPBX™ Enterprise? Our experts are here to help.
ClusterPBX™ Enterprise Features
The ClusterPBX™ Enterprise VoIP enterprise solution has the features you need to accommodate your growing business. This powerful, cutting-edge system is designed with large-scale business in mind.
STANDARD FEATURES | ADVANCED FEATURES |
---|---|
Encrypted Communication for Optimum Security (TLS/SIPS/SRTP) | Configuration Presets for 3rd Party VoIP Providers, VoIP Gateways, Skype™ and IP Phones |
Highly Reliable, With Failover Gateways and Master Database Architecture | Extensions and Phone lines Added on Demand via Web Interface |
Complete Phone System – Call Switching, Routing and Queueing | Send and Receive Calls With Standard PSTN Using VoIP Gateways / Cards |
Easy Web Interface: Calling, Extension Management, Phone Management, and more | Lightweight Directory Access Protocol (LDAP) |
Scalability from 200 to 50,000+ Users | Intercom |
Tailored and Scalable PBX Solutions | Automatic Call Distributor (ACD) |
Auto-Attendant Voice Menu System | Application Programming Interface (API) Support |
ClusterPBX™ Enterprise Integration
In addition to our broad selection of calling options, with the ClusterPBX™ Enterprise VoIP solution, you will receive the highest level of interoperability with industry-best brands for phones, servers, and supported protocols. Choose and easily configure your favorite phones and technologies.
COMPATIBLE IP TELEPHONE HARDWARE | COMPATIBLE SERVERS |
---|---|
ClearlyIP | IBM |
Avaya | Asus |
Nortel | HP |
Polycom | Dell |
Snom | VMware |
Aastra | |
Yealink | |
Cisco |
Contact us for additional phone hardware compatibility
SIP Trunks
Bring-Your-Own SIP Trunks or Save Big with ClearlyIP SIP Trunking
ClearlyIP SIP Trunking Offers 2 Types of Call Path Subscription Options or a Hybrid Model.
Unlimited Calling Per Channel
No per minute charge, pay by the channel
Pay Per Minute
Pay by the minute for all inbound and outbound calls, do not pay by the channel.
Hybrid Combination
Both types of call paths, per channel and per minute, on the same location.
Call Paths
Starting as Low as
$1799
per month
DIDs
Starting as Low as
60¢
per month
Volume Pricing
Please Contact Sales
Download the ClusterPBX™ OEM brochure for additional details on features, integration and more.