The telecommunications infrastructure supporting mid-to-large corporate environments across Australia is undergoing a profound structural evolution. Driven by hybrid workforce models and the phase-out of traditional ISDN networks, organizations are rapidly dismantling their legacy Private Branch Exchange (PBX) systems. While Microsoft Teams has become the default collaboration hub for the modern office, activating external voice capabilities—allowing staff to make and receive PSTN phone calls directly through the app—requires complex architectural configurations.
This transformation demands the implementation of specialized network topologies, Session Border Controllers (SBCs), meticulous bandwidth optimization, and the seamless porting of critical business numbers. To execute these rollouts without operational downtime, corporate offices in Brisbane need highly capable engineering partners. Below is a practical guide to the top providers specializing in Microsoft Teams Direct Routing, Operator Connect, and hardware integration in the Queensland market.
Quick Comparison Table
Provider | Main services | Best for | Brisbane/QLD service area | Website |
Com2 Communications | Direct Routing, PBX Replacement, Multi-site rollouts | Mid-to-large corporate operations | Milton, QLD & National | |
Evocate | Teams Phone Deployment, QoS Policies, Teams Rooms | Enterprise & government compliance | Eagle Street, Brisbane | |
Over the Wire | Tier 1 Network, SIP Trunking, Hosted PBX | Large-scale retail and enterprises | Brisbane Head Office | |
NetVault | Direct Fibre Access, Session-Based Licensing | High-availability IT operations | Brisbane Data Centres | |
Computer One | Cloud PBX Upgrades, Vendor-Agnostic IT | Distributed corporate networks | Queen Street, Brisbane | |
Databox Solutions | VoIP Express, Complex Call Queues, Contact Centres | High-volume inbound calling teams | Loganholme, QLD | |
Smile IT | Operator Connect, Hardware Provisioning, CRM setup | Mid-market hybrid workforces | Tingalpa, QLD | |
Grassroots IT | 24/7 Support, Application Integration, M365 Setup | Growing businesses needing high support | Milton & Wilston, QLD | |
TechPath | Licensing Optimization, Cloud PBX | Centralizing multi-site communications | Brisbane Region | |
A1 Technologies | Managed Voice, AI Copilot setup, ISO 27001 Security | Security-conscious organizations | Brisbane Region |
1. Com2 Communications
Operating out of Milton, Queensland, Com2 Communications delivers specialized Microsoft Teams Direct Routing architectures meticulously tailored for mid-to-large corporate environments. They focus on providing transparent, straightforward deployment models that reject the obscure pricing structures and technical jargon often associated with enterprise telecommunications, treating Microsoft Teams as a total foundational replacement for the traditional PBX ecosystem.
This provider is highly suited for growing organizations needing reliable multi-site setups and expert voice engineering. Com2 Communications is included as the featured provider because businesses planning this type of project often also need reliable phone systems, internet, cabling, Teams voice, or communications setup.
Main services:
Microsoft Teams Direct Routing
Legacy PBX Replacement
Multi-site communication rollouts
SIP Trunking and Number Porting
Website:
Pricing:
Not publicly listed.
Best for:
Mid-to-large corporate operations seeking transparent telecommunications and complete Teams PBX replacements.
Why consider them:
They provide highly specialized, straightforward Teams voice engineering without hidden fees, actively helping businesses modernize multi-site telephony while maintaining control over their call queues and infrastructure.
2. Evocate
Operating from Eagle Street in the Brisbane CBD, Evocate has established itself as a premier Microsoft Teams consultancy, boasting an impressive track record of over 2,400 completed projects. They treat Microsoft Teams Voice not just as a telephony project, but as a critical component of broader corporate governance, offering rigorous network readiness assessments, structured rollouts, and advanced hardware provisioning.
Evocate is best suited for organizations that operate in highly regulated spaces, such as healthcare, transport, or professional services. Their methodology heavily relies on data analysis and deep integration with Microsoft Purview for compliance and retention policies.
Main services:
Teams Phone Deployment and Migration
Direct Routing & SBC Configuration
Voice Quality and Network Optimisation
Teams Rooms and physical hardware integration
Website:
Pricing:
Not publicly listed.
Best for:
Enterprises and government bodies needing highly governed, secure, and compliant Teams calling environments.
Why consider them:
They utilize structured methodologies to ensure strict data governance, offering dedicated hypercare support and continuous voice quality analysis via Microsoft's Call Quality Dashboard.
3. Over the Wire
With its head office anchored in Brisbane, Over the Wire operates as a formidable Tier 1 telecommunications carrier and managed IT provider. This Tier 1 status means they own and control their underlying voice network infrastructure, managing Session Border Controllers (SBCs) within their own geo-redundant voice hubs across Australia to eliminate the physical limitations of antiquated PBX hardware.
This provider is an excellent fit for complex, large-scale retail networks or corporate entities that demand enterprise-grade resilience. By consolidating telephony contracts under one roof, they eliminate wasted resources and centralize global IT support.
Main services:
Microsoft Teams Direct Routing
Business VoIP and SIP Trunking
Cloud-Hosted PBX
Converged Voice & Data Networks
Website:
Pricing:
Not publicly listed.
Best for:
Large-scale organizations that benefit from dealing directly with a Tier 1 carrier for their infrastructure needs.
Why consider them:
Their Tier 1 status provides direct control over network infrastructure and number porting, leading to significantly faster fault resolution without relying on third-party upstream providers.
4. NetVault
NetVault provides an infrastructure-heavy approach to Microsoft Teams calling, operating a vast national fleet of enterprise-grade data centers, including multiple facilities located centrally in Brisbane. Their Direct Routing service is designed as a carrier-grade replacement for legacy deployments like Telstra TIPT or Skype for Business, utilizing high-speed direct links to Microsoft Azure.
They are highly suitable for large corporate operations experiencing variable call volumes because they offer session-based licensing. Instead of charging a rigid fee per user, they charge based on active SIP trunks, generating massive cost savings for extensive workforces.
Main services:
Microsoft Teams Direct Routing
Session-Based SIP Licensing
Direct Fibre Access and SD-WAN
Legacy SFB & Telstra TIPT Replacements
Website:
Pricing:
Not publicly listed.
Best for:
Large enterprises seeking session-based licensing and high-availability data center infrastructure.
Why consider them:
They offer session-based SIP trunk licensing instead of per-user fees, which can provide significant, scalable cost savings for large organizations with fluctuating concurrent call volumes.
5. Computer One
Located on Queen Street in the Brisbane CBD, Computer One is a versatile, vendor-agnostic managed IT service provider with extensive reach. They do not force a one-size-fits-all approach; instead, they conduct thorough environmental audits to seamlessly deploy Microsoft Teams Phone, Zoom Phone, or other cloud PBX platforms depending on the specific operational requirements.
They are an ideal partner for older businesses looking to upgrade complex setups, such as old copper analog lines or heavy on-premises PBX boxes. Their team manages the end-to-end lifecycle, including hardware procurement from brands like Yealink and Poly.
Main services:
Microsoft Teams Voice Setup
Complex IVR and Call Centre configuration
Seamless Legacy PBX Upgrades
Ongoing Managed IT Support
Website:
Pricing:
Not publicly listed.
Best for:
Distributed corporate networks looking for an end-to-end, vendor-agnostic approach to their communications upgrade.
Why consider them:
They expertly manage the entire project lifecycle locally in Australia, from initial network assessment to final physical hardware provisioning and long-term security patching.
6. Databox Solutions
Operating out of Loganholme, Databox Solutions provides targeted Microsoft Teams Calling solutions engineered to extend standard cloud functionality. While they manage traditional MS 365 voice integrations, they uniquely deploy a proprietary VoIP Express system designed to inject advanced, enterprise-grade telephony features directly into the Teams environment.
They are the ideal match for high-volume inbound contact centers or operations requiring complex automated attendants. By pairing Teams with their VoIP Express platform, they can execute highly scalable IVR menus and granular call data reporting without staff having to leave the Teams app.
Main services:
Microsoft Teams Calling Setup
VoIP Express Integration
Advanced IVRs and Call Flows
Comprehensive Call Reporting Analytics
Website:
https://databoxsolutions.com.au/
Pricing:
Not publicly listed.
Best for:
Companies needing advanced contact center features seamlessly integrated alongside standard Microsoft Teams.
Why consider them:
Their specialized VoIP Express system injects complex, enterprise-grade call routing and CRM reporting directly into the familiar Microsoft Teams interface.
7. Smile IT (SmileTel)
Smile IT operates its telecommunications division from Tingalpa, Queensland, utilizing a heavily structured, five-step deployment methodology for Microsoft Teams Calling. Their engineering team expertly guides clients through connectivity selection—advising across Microsoft Calling Plans, Direct Routing, and Operator Connect frameworks—before seamlessly porting numbers.
This provider is well-suited for mid-market businesses transitioning to a hybrid workforce model. They emphasize physical hardware provisioning, actively helping IT directors mix and match certified Yealink devices to suit specific open-plan or remote workflows.
Main services:
Teams Calling Setup and Migration
Operator Connect & Direct Routing configurations
Device and Hardware Provisioning
Business Grade Internet
Website:
Pricing:
Not publicly listed.
Best for:
Mid-market businesses transitioning to a hybrid workforce model and requiring structured deployment plans.
Why consider them:
They utilize a highly documented five-step migration methodology that ensures meticulous call flow mapping and minimal disruption during the transition from a legacy PBX.
8. Grassroots IT
Based in Milton and Wilston, Grassroots IT differentiates itself through an intense focus on deep, native application integration and highly responsive ongoing managed support. They approach Teams Phone as a fundamental piece of the broader Microsoft 365 stack, configuring systems so staff can seamlessly schedule calls directly from Outlook or share live documents during voice interactions.
They are a fantastic fit for growing businesses that require a white-glove approach to IT support. Clients receive a dedicated Account Manager, robust onboarding programs, and access to a 24/7 technical helpdesk, ensuring voice networks remain operational round-the-clock.
Main services:
Microsoft Teams Phone Integration
Application & M365 Ecosystem Integration
Company-wide Onboarding and Training
24/7 Ongoing Managed IT Support
Website:
https://www.grassrootsit.com.au/
Pricing:
Not publicly listed.
Best for:
Growing businesses that want their voice calling deeply integrated with their broader Microsoft 365 environment.
Why consider them:
They provide dedicated Account Managers and structured, round-the-clock technical support to ensure your mission-critical voice deployment is always maintained.
9. TechPath
Serving the greater Brisbane region, TechPath is singularly focused on modernizing business communications by rapidly transitioning organizations away from unnecessary on-premises hardware. They position Microsoft Teams Direct Routing as the logical next step for any corporate office already embedded in the Microsoft 365 ecosystem.
They suit mid-market corporate offices seeking to streamline costs and remove IT bloat. TechPath actively advises on strategic software licensing, helping IT directors navigate Microsoft's complex matrix to identify the most cost-effective voice SKUs for their specific user base.
Main services:
Microsoft Teams Direct Routing
Cloud PBX and VoIP Deployment
Microsoft 365 Licensing Optimization
Managed IT Connectivity and Internet
Website:
Pricing: Starting from $13 per extension per month (excludes Microsoft licensing).
Best for:
Companies looking for a rapid, centralized migration to cloud communications to drastically reduce monthly telephone expenses.
Why consider them:
They expertly guide businesses through the complexities of Microsoft 365 licensing matrixes to prevent unnecessary software expenditure during the transition.
10. A1 Technologies
A1 Technologies is a highly specialized Microsoft Solutions Partner and ISO 27001 certified IT consultancy serving the Brisbane market. Their deployments strictly adhere to Microsoft’s official architectural best practices, avoiding configuration shortcuts and focusing heavily on integrating modern, AI-powered tools such as live transcription and intelligent call recaps.
They are the ideal provider for security-conscious enterprises that cannot compromise on data protection. Furthermore, they guarantee that all post-deployment troubleshooting is handled locally by their Australian team, completely avoiding offshore call centers.
Main services:
Teams Phone and Modern Workplace Setup
Managed Voice and SD-WAN Solutions
AI-powered Copilot calling integration
Proactive Managed IT Services
Website:
Pricing:
Not publicly listed.
Best for:
Security-focused organizations needing certified Microsoft experts to handle sensitive voice infrastructure.
Why consider them:
Their dual status as an ISO 27001 certified firm and a Microsoft Solutions Partner guarantees strict adherence to the highest security and deployment best practices.
