Delivering Solutions Where the Only Limitation Is Your Imagination
Bespoke voice platforms engineered on FreeSWITCH, Kamailio, and Asterisk. We build custom IVR systems, SIP proxies, WebRTC gateways, hosted PBX platforms, and contact centre solutions tailored precisely to your requirements.
What Are Custom Voice Solutions?
Purpose-built voice platforms that go far beyond off-the-shelf products, engineered to match your exact business requirements.
Open-Source Power, Enterprise Reliability
Custom voice solutions are bespoke telephony and communications platforms built on proven open-source technologies. Unlike proprietary systems that constrain you to a vendor's feature roadmap, custom platforms give you complete control over functionality, integration, and cost.
Our engineering team has deep expertise in FreeSWITCH, Kamailio, and Asterisk — the three pillars of open-source voice technology. FreeSWITCH handles complex call processing and media operations. Kamailio provides high-performance SIP proxy and routing at massive scale. Asterisk delivers flexible PBX and IVR functionality. Together, they form the foundation for virtually any voice application.
Voice Consultancy brings years of hands-on engineering experience to every project. We do not resell packaged products — we architect, build, and support platforms that are precisely tailored to your business, with the flexibility to evolve as your requirements change.
Open-Source Foundation
FreeSWITCH, Kamailio, and Asterisk provide enterprise-grade capabilities without vendor lock-in or per-seat licensing.
Unlimited Flexibility
Every platform is built to your specification. If you can define the requirement, we can engineer the solution.
Cost-Effective at Scale
Open-source eliminates per-user licensing. Scale to thousands of users without proportional cost increases.
Deep Engineering Expertise
Our team has built and operated voice platforms handling millions of calls. Real-world experience, not just theory.
What We Build
A broad range of custom voice platforms and applications, all built on proven open-source foundations.
Hosted PBX & IVR Systems
Multi-tenant hosted PBX platforms for service providers, and sophisticated IVR systems with speech recognition, database lookups, and dynamic call routing for enterprises.
- Custom multi-tenant hosted PBX
- Interactive voice response (IVR) systems
- Auto attendants with intelligent routing
- Voicemail, call recording & analytics
SIP Proxies & WebRTC Gateways
High-performance SIP proxy infrastructure for call routing, load balancing, and protocol translation. WebRTC gateways that bring voice directly into web and mobile applications.
- Kamailio-based SIP proxy clusters
- WebRTC-to-SIP gateway services
- Load balancing and failover routing
- Protocol translation and interworking
Contact Centres & Auto-Diallers
Full-featured contact centre platforms with ACD, agent management, and CRM integration. Predictive and preview auto-dialler systems built to Ofcom compliance standards.
- ACD with skills-based routing
- Predictive and preview auto-diallers
- Real-time and historical reporting
- CRM and API integrations
The Breadth of What Is Possible
Examples of custom voice solutions we have designed and delivered.
Bespoke Call Routing
Complex routing logic based on time of day, caller ID, database lookups, geographic location, and business rules that go beyond any off-the-shelf product.
API-Driven Voice
RESTful APIs that let your applications make, receive, and control calls programmatically. Integrate voice into any workflow or application.
Compliant Call Recording
Policy-based call recording with encryption, retention management, and search capabilities built to meet MiFID II, PCI-DSS, and GDPR requirements.
Number Management Platforms
Self-service portals for number provisioning, porting, routing configuration, and real-time call analytics across large number estates.
Carrier-Grade SIP Trunking
Scalable SIP trunking platforms with intelligent least-cost routing, number translation, and multi-carrier failover.
Legacy System Integration
Bridging modern VoIP platforms with legacy PBX, ISDN, and analogue systems through protocol conversion and intelligent interworking.
How We Deliver Custom Voice Projects
Structured engineering methodology from concept through to production operation.
Discover & Scope
We work closely with your team to understand the business problem, define functional requirements, and identify integration points. This phase produces a detailed technical specification and architecture document.
Requirements & Architecture
Design & Prototype
Our engineers design the platform architecture and build a working prototype for validation. You see and test the solution before full development begins, ensuring alignment with your vision.
Proof of Concept
Build & Test
Full platform development with rigorous testing at every stage. Load testing, failover testing, security auditing, and user acceptance testing ensure production readiness.
Development & QA
Deploy & Support
Production deployment with monitoring, alerting, and ongoing support. We provide managed operations, platform updates, and engineering support as your requirements evolve.
Production & Managed Operations
Have a Voice Project in Mind?
Book a consultation to discuss your requirements. Whether you have a detailed specification or just an idea, our engineering team can help you design and build the right solution.
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