Voice, API & Unified Communications Development

Custom real-time communication software, integrations and automation built around your business

Communication Software Built Around Your Requirements

Onexa Global specialises in software development for voice communications, telephony APIs, Unified Communications and contact-center environments.

We build custom applications that connect voice platforms with web, mobile, CRM, AI and enterprise systems—from SIP and WebRTC applications to automated provisioning, real-time call control, customer portals and intelligent voice agents.

Discuss Your Project

Voice Application Development

Custom software for real-time business communications and telephony workflows.

SIP Voice Applications

SIP-based communication applications
Extension and endpoint workflows
Inbound and outbound call control
Custom call-routing logic
SIP trunk and gateway integration

WebRTC Applications

Browser-based voice calling
Browser video communications
Web softphones
Click-to-call applications
Embedded communication widgets

Softphone Development

Custom desktop softphones
Mobile VoIP applications
Business diallers
Contact and presence integration
Branded communication clients

IVR & Voice Workflows

Dynamic IVR applications
Database-driven call flows
Self-service voice applications
Multilingual voice menus
External API-driven routing

Real-Time Audio Integration

Live audio streaming
Media processing workflows
Voice-bot audio integration
Speech platform connectivity
Custom audio applications

Conferencing & Collaboration

Audio conference applications
Conference control interfaces
Participant management
Meeting workflow integration
Voice collaboration tools

Voice API & Platform Integration

Connect communications platforms with business systems through secure APIs and event-driven integrations.

Custom Voice APIs

REST API development
Call-control APIs
Extension and user management APIs
Provisioning APIs
Configuration-management APIs

Events & Webhooks

Real-time call events
Call state notifications
Webhook integrations
Event-driven business workflows
External application triggers

CRM Integration

Caller identification and lookup
Screen-pop applications
Click-to-call
Automatic call activity logging
Customer history integration

PBX Integration

PBX management applications
Extension provisioning
Call routing integration
CDR and call-event integration
Multi-PBX management portals

Contact Center Integration

Agent applications
Queue dashboards
Supervisor interfaces
Campaign integrations
Recording and QA workflows

Third-Party Integration

Telecom carrier APIs
CPaaS integration
Messaging platform integration
Business application integration
Legacy-system integration

Unified Communications Development

Bring calling, presence, messaging, mobility and collaboration into a unified user experience.

UC User Applications

Unified communication portals
Presence and user status
Corporate directory integration
Call history and communication records
User communication preferences

Messaging & Collaboration

Business messaging integration
Team communication workflows
Notification services
Voice and messaging convergence
Collaboration-system connectors

Mobility & Remote Work

Mobile communication apps
Remote extension applications
Single business identity across devices
Desktop and mobile integration
Work-from-anywhere communication tools

Voice & Video Integration

Web voice and video applications
Video meeting integration
Browser collaboration
Embedded communications
Real-time media applications

Directory & Identity Integration

Enterprise directory integration
Central user provisioning
Contact synchronisation
Authentication integration
Role-based feature access

UC Platform Connectors

Custom platform connectors
PBX-to-UC integration
Call-control integration
Presence synchronisation
Business workflow integration

AI Voice & Communication Automation

Integrate conversational AI with telephony and contact-center systems to automate customer interactions.

AI Voice Agents

Inbound AI voice agents
Outbound automated voice interactions
Natural-language customer conversations
Intent-based call handling
Transfer and escalation to human agents
Business-system lookup through APIs

Speech & Conversation Integration

Speech-to-text integration
Text-to-speech integration
Real-time audio streaming
Voice transcription workflows
Conversation summarisation integration
Custom AI workflow orchestration

Provisioning & Automation

Reduce repetitive administration by automating communication-platform operations.

User Provisioning

Automatic extension creation
User activation and deactivation
Credential generation workflows
Device assignment
Bulk provisioning

Configuration Automation

Routing configuration
Number management
Caller-ID configuration
Policy automation
Scheduled configuration changes

Customer Self-Service

Customer administration portals
Extension management
Service activation workflows
Number and routing management
Role-based customer access

Portals, Dashboards & Management Applications

Turn complex communication platforms into simple operational tools for users, administrators and customers.

Real-Time Dashboards

Live call monitoring
Trunk and extension status
Queue and agent status
System-health dashboards
Operational alerts

Reporting Applications

CDR reporting
Usage and traffic analytics
Queue and agent reports
Custom KPI dashboards
Data export and scheduled reports

Administration Portals

Role-based administration
Customer and partner portals
User and service management
Audit and activity logging
Multi-tenant management

Typical Development Use Cases

We can build complete communication applications or extend an existing PBX, UC, contact-center or telecom environment.

Custom web softphones
Mobile VoIP applications
WebRTC click-to-call
Customer self-service portals
Partner provisioning portals
Automated SIP user provisioning
PBX management APIs
Contact-center dashboards
Call recording review applications
CRM screen-pop integration
Click-to-dial applications
Caller-ID management
Number inventory management
Call routing automation
Call-detail reporting platforms
Real-time call monitoring
AI voice assistants
Automated reminder systems
Voice survey applications
Custom telecom billing integration
Notification and alerting applications
Multi-tenant communication portals

Communication Engineering & Integration Expertise

Successful voice software requires more than application development—it also requires understanding real-time communications and telephony behaviour.

Telephony

SIP, RTP, extensions, trunks, routing, DTMF, codecs, call flows, caller ID and telephony interoperability.

Application Integration

APIs, webhooks, databases, authentication, business workflows and custom communication applications.

Real-Time Communications

WebRTC, live audio, media streams, remote users and integration between browser, mobile and voice platforms.

From Concept to Production

We support the complete lifecycle of custom communication applications.

Design

Requirements, call flows, integration architecture and solution design.

Development

Custom application, API, portal and communications development.

Testing

Functional, interoperability, call-flow, load and integration testing.

Deployment & Support

Production rollout, monitoring, optimisation, enhancement and ongoing support.

Have a voice, API or UC project in mind?

Talk to Onexa Global about custom voice applications, WebRTC, communication APIs, PBX and contact-center integrations, Unified Communications, AI voice agents or automation.

Discuss Your Project

Solutions can be designed around existing communication platforms, third-party APIs and customer-specific operational requirements.

Related Services

Hosted PBX solutions · Contact center solutions · ALE professional services · Managed ICT support