Multi Tenant IP PBX Solution
Our solution is engineered for high availability and seamless scalability, allowing you to host thousands of separate tenants on a single, robust infrastructure. Whether you are an Internet Telephony Service Provider (ITSP) looking to expand your portfolio or a Managed Service Provider (MSP) aiming to add voice revenue streams, Sheerbit delivers the power of a Class 5 Softswitch with the simplicity of a cloud app.
Our Premier PBX Development Services
At Sheerbit, we don’t just offer a platform; we provide the end-to-end ecosystem required to run a successful telecom business. From custom coding to mobile applications, our services ensure your infrastructure is robust, scalable, and uniquely yours.
Custom Multi-Tenant PBX Development
We architect carrier-grade PBX platforms tailored specifically for ISPs, MSPs, and telecom resellers. Unlike off-the-shelf solutions, our development service allows you to define the exact feature set, user limits, and routing logic your business model requires. We build systems that support unlimited tenants with complete data isolation, ensuring security and scalability as your subscriber base grows.
Mobile VoIP Softswitch & White-Label Apps
Extend your PBX Phone System with a custom Mobile VoIP Softswitch application that keeps your clients connected anywhere. Unlike a standard 3CX IP PBX, our fully branded mobile apps integrate seamlessly with your Cloud Hosted PBX, offering secure remote access and a unified identity that strengthens your brand presence in the market.
Integrated Billing for FusionPBX & FreePBX Systems
Monetize your VoIP PBX System effectively with automated billing engines designed for platforms like FusionPBX and FreePBX. We enable real-time rating and invoicing directly within your Cloud Based PBX, ensuring you can manage prepaid/postpaid accounts and PBX Providers' wholesale traffic without revenue leakage.
Contact Center on Asterisk PBX & FreeSwitch PBX
Upgrade your IP PBX offering with advanced contact center features built on the stability of Asterisk PBX and FreeSwitch PBX. Our solution adds predictive dialing and skill-based routing to your PBX System for Small Business, empowering tenants to run professional support teams comparable to high-end 3CX PBX setups.
WebRTC for Cloud Hosted PBX & Unified Communications
Modernize your VoIP PBX with browser-based WebRTC technology that eliminates the need for complex desktop installations. This "Click-to-Call" feature enhances your Cloud PBX Solutions by enabling instant video and voice communication, making it the perfect PBX System add-on for remote teams and agile businesses.
Infrastructure Management for PBX Providers
Ensure carrier-grade reliability for your Hosted PBX infrastructure with our expert tuning of Asterisk PBX and SIP engines. We help PBX Providers scale their IP PBX System to handle high concurrency, offering load balancing and security hardening that outperforms standard out-of-the-box configurations found in generic Cloud PBX software.
Core features of a Multi-Tenant VoIP PBX
Client Testimonial
Switch to Sheerbit’s custom Multi-Tenant PBX and turn your communication costs into pure profit.
Why Choose Sheerbit for Your Multi-Tenant PBX?
We Build, We Don’t Just Resell
Unlike generic providers who simply resell third-party licenses, Sheerbit builds your Multi-Tenant PBX from the ground up using core engines like Asterisk and Kamailio. This gives you 100% ownership of the code and the freedom to escape vendor lock-in, ensuring your platform grows exactly how your business demands.
End-to-End Customization
We tailor every inch of your telephony ecosystem, from the backend routing logic to the frontend user interface. Whether you need a specific billing module integration or a unique feature for a niche market, our developers code it directly into your system, providing a truly bespoke VoIP solution.
Carrier-Grade Security & Reliability
Security is in our DNA. We harden your infrastructure with advanced protocols including TLS/SRTP encryption, automated failover redundancy, and intelligent intrusion detection (Fail2Ban). We ensure your cloud PBX is fortress-secure against toll fraud and SIP attacks while maintaining 99.99% uptime.
Seamless Third-Party Integrations
We don’t let your PBX live in isolation. Sheerbit integrates your telephony system with critical business tools like CRM software (Salesforce, HubSpot), ERP systems, and payment gateways. This creates a unified workflow where data flows automatically between your calls and your business applications.
Scalability Without Penalties
Growth shouldn’t be expensive. Our solutions are architected to scale horizontally, allowing you to add unlimited tenants and extensions without exponential licensing fees. As your subscriber base expands, our optimized infrastructure ensures your hosted PBX maintains peak performance without forcing a costly platform migration.
Dedicated Expert Support
Forget automated chatbots and tiered support queues. With Sheerbit, you get direct access to the engineers who built your system. We provide ongoing maintenance, proactive monitoring, and rapid troubleshooting to ensure your VoIP business runs smoothly 24/7/365.
Engineered for Scale. Built for Reliability.
Frequently Asked Questions
A Multi-Tenant PBX allows a single software instance to serve multiple separate companies (tenants). Unlike a standard PBX where each client needs their own server, our solution partitions data so you can manage hundreds of customers from one central dashboard while keeping their data completely private and secure.
Yes. We offer flexible deployment options. You can host the solution on your own on-premise hardware or in your preferred cloud environment (AWS, Google Cloud, Azure, DigitalOcean). We build it, you control where it lives.
Absolutely. Our solution is designed for you to resell as your own product. You can customize the domain URL, upload your company logo, change color schemes, and even rebrand the mobile and desktop softphones to reflect your corporate identity.
We integrate a carrier-grade billing engine directly into your PBX. It tracks calls in real-time, manages prepaid and postpaid wallets, handles tax calculations, and automatically generates branded invoices for your clients, streamlining your revenue cycle.
Yes. Our architecture is built on robust engines like Asterisk and Kamailio, designed for horizontal scalability. As your business grows, you can add unlimited tenants and extensions without paying exponential per-user licensing fees—your only limit is your server hardware capacity.
Yes, we offer custom development for iOS and Android mobile softphones. These apps are fully integrated with your PBX, allowing your clients' employees to make and receive business calls from their personal devices using their office extension.
Security is a top priority. Our platform includes built-in firewalls, fail2ban for intrusion detection, IP blacklisting, and TLS/SRTP encryption for voice traffic. We also implement anti-fraud measures to protect against toll fraud and unauthorized access.
Yes. Since we provide custom development, we can integrate your PBX with popular tools like Salesforce, HubSpot, Zoho, or any custom ERP system via API. This enables features like click-to-call, screen popping, and automatic call logging.
That is where Sheerbit shines. Unlike rigid "box" solutions, we are a development partner. If you need a unique routing logic, a custom reporting widget, or a specialized IVR feature, our team will code it specifically for your platform.
Yes, we provide ongoing technical support and maintenance packages. Our team monitors your system's health, applies security patches, and is available to troubleshoot any critical issues to ensure your service maintains 99.99% uptime.