Unified Communications

VoIP Phone Systems & Managed IT Services in Australia

Modern Australian businesses are ditching legacy phone systems for VoIP — and smart ones use their MSP to deploy, manage, and keep every call crystal clear.

Published: 21 April 2026 | Unified Communications Guide
40–60%
Cost Reduction
Lower call costs versus traditional phone systems, especially for interstate and international calls
100%
Remote Work Ready
Staff can take their business number anywhere — at home, interstate, or overseas
Minutes
Scalability
Add or remove lines in minutes without hardware changes or technician visits
Deep
Integration
Connects with CRM, Microsoft Teams, and helpdesk platforms natively

VoIP Platforms Used by Australian MSPs

Microsoft Teams Phone

Microsoft

Best for: Businesses already on Microsoft 365

  • Native Teams integration
  • Calling Plans or Direct Routing
  • Auto-attendant and call queues
  • Desktop, mobile, and desk phone support

MSP Assessment:

The dominant choice for Australian businesses. MSPs manage licensing, Direct Routing via Australian carriers, and Teams admin.

3CX

3CX

Best for: SMEs wanting full-featured on-premise or cloud PBX

  • Browser and app-based calling
  • Advanced call routing and IVR
  • CRM integrations (HubSpot, Salesforce)
  • Video conferencing built-in

MSP Assessment:

Popular in Australia for its flexibility and predictable per-system pricing. MSPs host and fully manage 3CX instances.

RingCentral / 8x8

UCaaS Platforms

Best for: Mid-market and enterprise with complex call centre needs

  • Multi-site management
  • Call recording and analytics
  • AI-powered transcription
  • Contact centre modules

MSP Assessment:

Suitable for businesses with 50+ seats or dedicated contact centre requirements. Higher licensing cost.

Hosted PBX (Carrier-based)

Telstra, Aussie Broadband, etc.

Best for: Businesses wanting minimal internal management

  • Carrier-managed reliability
  • Geographic redundancy
  • Number porting
  • Basic IVR and voicemail

MSP Assessment:

MSPs configure and manage carrier-hosted PBX, handle porting, and monitor call quality continuously.

What Your MSP Does for VoIP

Design & Deployment

  • Assess business call flows and requirements
  • Design dial plans and call routing rules
  • Configure IVR menus and auto-attendants
  • Number porting from legacy carrier
  • QoS configuration on the network for voice priority

Ongoing Management

  • 24/7 call quality monitoring
  • Add/remove users and extensions
  • Update business hours and holiday routing
  • Manage carrier relationships and billing
  • Monthly call analytics reporting

Security & Compliance

  • SIP trunk fraud prevention
  • Call recording for compliance (financial services, legal)
  • Encrypted voice (SRTP/TLS) configuration
  • Access controls for international dialling
  • Integration with security monitoring platforms

Modernise Your Business Phone System

Still on an old PABX? Our MSP partners can migrate you to a modern VoIP platform — with zero downtime and a number you keep.

Get a Free VoIP Assessment View Top-Rated MSP

Frequently Asked Questions

What is VoIP and how does it work for Australian businesses?

VoIP (Voice over Internet Protocol) routes business phone calls over your internet connection instead of traditional copper telephone lines. It enables features like call routing, IVR menus, call recording, and integration with tools like Microsoft Teams — at 40–60% lower cost than legacy phone systems.

Can I keep my existing phone number when switching to VoIP?

Yes. Number porting transfers your existing geographic (02, 03, 07, 08) or 1300/1800 numbers to your VoIP platform. Australian MSPs manage the entire porting process, including carrier coordination and ensuring no call interruption during the transition.

What internet speed do I need for VoIP in Australia?

Each simultaneous VoIP call uses approximately 100 Kbps of bandwidth. A 10-person team with 5 concurrent calls needs only 500 Kbps — well within NBN 50 capacity. The bigger concern is upload speed and latency. MSPs configure QoS to prioritise voice traffic on your network.

Should I use Microsoft Teams Phone or a dedicated VoIP system?

If your business is already using Microsoft 365 and Teams, Teams Phone (via Direct Routing with an Australian carrier) is the most seamless choice — calls live inside the app your team uses daily. Businesses wanting more advanced call centre features typically choose 3CX or a UCaaS platform.

Which Australian MSP manages VoIP and business phone systems?

Affinity MSP provides end-to-end VoIP and unified communications management including Microsoft Teams Phone deployment, 3CX hosting, number porting, call quality monitoring, and 24/7 support across Australia.