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Asterisk-Based Hosted PBX Solutions

Flexible, secure and fully managed business telephony built around open VoIP standards

Hosted PBX Built for Modern Business

Onexa Global delivers professionally designed and managed Asterisk-based PBX solutions for businesses that need reliable voice communications, advanced call handling and the flexibility to integrate telephony with other business systems.

Our solutions can be deployed in the cloud, on-premises or as a hybrid platform, and can support single offices, distributed branches, remote workers, contact-center teams and customised telephony applications.

Core PBX Features

Everything required for professional inbound and outbound business calling.

Extensions & User Management

  • SIP extensions and user accounts
  • Desk phones, softphones and mobile clients
  • Extension-to-extension calling
  • BLF / presence and speed dial
  • Hot desking and flexible user profiles

Advanced Call Routing

  • Ring groups and hunt groups
  • Time-based routing and office hours
  • Call forwarding and follow-me
  • DID-based inbound routing
  • Overflow and failover destinations

IVR & Auto Attendant

  • Multi-level IVR menus
  • Department and service routing
  • Multilingual prompts
  • Custom announcements and greetings
  • After-hours and holiday routing

Call Queues & ACD

  • Agent queues
  • Skills / priority-based call distribution
  • Queue announcements and music on hold
  • Agent login / logout
  • Queue overflow and callback workflows

Voicemail & Messaging

  • Personal and departmental voicemail
  • Voicemail-to-email
  • Message waiting indication
  • Custom greetings
  • Centralised voicemail administration

Conference & Collaboration

  • Audio conference rooms
  • Ad-hoc conferencing
  • Call transfer and attended transfer
  • Call park and pickup
  • Paging and intercom support

Recording, Reporting & Operations

Tools that help administrators monitor usage, service quality and day-to-day operation.

Call Recording

  • Automatic or on-demand recording
  • Inbound and outbound call recording
  • Recording retention policies
  • Secure playback and retrieval
  • Custom recording workflows

CDR & Reporting

  • Call Detail Records (CDR)
  • Inbound / outbound usage reports
  • Extension and department reports
  • Queue and agent statistics
  • Custom dashboards and exports

Live Monitoring

  • Active call monitoring
  • Extension and trunk status
  • Queue monitoring
  • System health checks
  • Alerts and operational dashboards

Connectivity & Mobility

Connect users, branches, carriers and remote teams through secure VoIP services.

SIP Trunks

Connect to SIP carriers, ITSPs and telecom service providers with flexible inbound and outbound routing.

Multi-Site PBX

Link head offices, branches and distributed locations through one unified numbering and call-routing plan.

Remote & Mobile Users

Support work-from-home staff, mobile applications and remote extensions while retaining business calling features.

Gateways & Legacy Integration

Integrate analogue phones, FXO/FXS gateways, PRI/E1 interfaces and existing telephony infrastructure where required.

APIs, Automation & Integrations

Extend the PBX beyond basic calling and connect communications with your business applications.

API & Application Integration

  • Custom REST API integrations
  • CRM and customer database integration
  • Click-to-call functionality
  • Screen-pop and caller information
  • Automated extension provisioning
  • Webhooks and custom workflow integration

Automation & AI Ready

  • AI voice-agent integration
  • Speech and IVR automation
  • External application call control
  • Custom dial-plan automation
  • Audio streaming and voice application integration
  • Integration with contact-center workflows

Security, Availability & Resilience

Designed with operational security and service continuity in mind.

VoIP Security

  • Firewall and access-control policies
  • Fail2ban and attack mitigation
  • Secure administration access
  • SIP endpoint restrictions
  • TLS / SRTP support where required

Backup & Recovery

  • Configuration backups
  • Database backups
  • Recording backup options
  • Disaster-recovery planning
  • Rapid service restoration

High Availability

  • Primary / standby architecture
  • SIP trunk failover
  • Alternate call routing
  • Infrastructure redundancy
  • Monitoring and service alerts

More Useful Business Features

The platform can be customised with additional functionality depending on your business requirements.

Because the solution is based on open VoIP standards and a flexible dial-plan architecture, Onexa Global can build specialised call flows and integrations beyond a traditional PBX.

  • Caller ID presentation and manipulation
  • Call screening and blacklist / whitelist rules
  • PIN-based outbound calling
  • Call restrictions and class of service
  • Least-cost routing
  • Emergency and priority routing
  • Music on hold by department
  • Custom announcements
  • Call whisper and supervisor monitoring
  • Call pickup groups
  • Direct inward dialing (DID)
  • Outbound caller-ID selection
  • Number portability support
  • Scheduled routing and holiday calendars
  • Automatic phone provisioning workflows
  • Custom billing and charging integration
  • Multi-language voice prompts
  • Custom contact-center call flows
  • Third-party SIP device integration
  • Custom web administration portals

Flexible Deployment Options

Choose the architecture that best matches your operational and security requirements.

Cloud Hosted

Fully hosted PBX infrastructure with remote access, central administration and simplified scaling.

On-Premises

Dedicated PBX deployment within your own infrastructure for greater local control and integration.

Hybrid

Combine on-premises telephony with cloud services, remote users, SIP carriers and centralised applications.

Onexa Global Professional Services

We can manage the complete PBX lifecycle—from initial design to ongoing support.

  • Solution design and sizing
  • Installation and configuration
  • SIP trunk integration
  • Phone and softphone provisioning
  • IVR and call-flow development
  • Migration from legacy PBX
  • Security hardening
  • Custom API development
  • Monitoring and optimisation
  • Managed support and troubleshooting

Ready to modernize your business telephony?

Talk to Onexa Global about a secure, scalable and customised Asterisk-based PBX solution for your organisation.

Get a Free PBX Audit

Available features depend on the selected architecture, endpoints, carrier services, integrations and licensing of any third-party components.