GPK Voice: Independent Voice for Modern Business
Cloud PBX forAustralian Business
GPK delivers cloud PBX for Australian businesses, covering everything from SIP trunking to Microsoft Teams Calling for Australian organisations. We own the outcome so you never have to deal with a telco again.
Trusted across Australia
Why GPK Voice
Cloud PBX and Business Phone Systems Built for the Way You Work
Most businesses are stuck with a phone system that was designed for how telcos sell, not how teams actually work. Legacy PBX hardware that costs a fortune to maintain, offshore support that takes days to respond, and carrier contracts that lock you in regardless of performance.
GPK Voice is a tiered, fully managed cloud voice solution built for Australian SMBs and mid-market organisations. Whether you need a simple hosted PBX for Australian businesses on a budget or Microsoft Teams Calling for Australian organisations already in Microsoft 365, GPK selects the right tier, handles the carriers, and manages everything behind the scenes.
As part of our broader managed IT services, your voice and connectivity stack works together under one provider. One support team. One bill. Less tickets, just results.
Why Choose GPK Voice as your managed voice provider
Our Solutions
Three ways to deliver your business phone system
Choose the voice tier that matches your current setup and business goals. All tiers are fully managed by GPK with proactive monitoring and 100% Australian support.
- Lines Only
SIP Trunking
Keep your existing hardware, upgrade your lines.
- SIP line takeover and management
- Number porting included (standard single range)
- Unlimited local and national calls
- Competative call rates
- Proactive monitoring
- 100% Aussie support
Best For:
Businesses with existing on-prem PBX hardware, mid-contract situations, or multi-site environments with established infrastructure.
- Most Popular
Seamless deploymentand reliable delivery
A complete business phone system, no hardware required.
- Fully hosted cloud PBX platform
- Calls to AU mobiles and landlines included
- Number porting included
- Call queues, ring groups, IVR, voicemail
- Time-based routing
- Call analytics and reporting
- 100% Aussie support
Best For:
Growing businesses, multi-site teams, and hybrid or remote workforces who want a modern phone system without on-site hardware.
- Microsoft 365
Microsoft Teams Calling
Calling fully integrated into Microsoft Teams.
- Native calling enablement inside Teams
- Calls to AU mobiles and landlines included
- Number porting included
- Auto attendants, call queues, voicemail
- Softphone via Teams desktop and mobile app
- Call analytics and reporting
- 100% Aussie support
Best For:
Organisations already using Microsoft 365 who want business calling fully integrated into their existing Teams environment.
Three solutions to fit your needs.
GPK Voice positions telephony as a managed business service, not a legacy telco product, reinforcing GPK’s promise of less tickets, just results.
1300 / 1800 numbers
Australia-wide number with flexible routing by time, team, or location. Business continuity built in.
per DID, per month
Softphone
Make and receive business calls from mobile or desktop.
Full PBX features on the go, business number stays private.
per user, per month
Desk handsets
Wi-Fi and Bluetooth enabled, 8 configurable buttons, 3.7″ screen, dual Gig ports. Calls to AU destinations included.
per device, per month
DECT headsets
Dual UC DECT wireless headset, 3-mic noise cancellation, Bluetooth, UC certified with charging stand and carrying bag.
per device, per month
How We Deliver
From discovery to go-live, GPK owns the outcome
Setting up a business phone system should not require a project manager, a carrier liaison, and three rounds of technical discovery. GPK handles it all with a lightweight, low-friction process designed for speed.
Discovery Call (15-30 mins)
We confirm your user count, identify the right voice tier, and agree on a go/no-go. No technical deep dive, no carrier detail, no jargon.
Same-Day Quote or 30-Day PoC
Straightforward requirements get a same-day quote. Larger deployments (20+ seats) or change-sensitive environments can opt for a 30-day Proof of Concept first.
Project Initiation
Our delivery team runs detailed technical discovery including number porting, call flows, IVR, hardware requirements, and cutover planning.
Go-Live and Ongoing Support
We deploy, configure, and test everything before go-live. Proactive monitoring and 100% Australian support continue from day one.
Customer success story.
GPK worked closely with internal teams to confirm user numbers, select the right voice tier, and coordinate a streamlined deployment across multiple states.
Our standardised voice packages and proven rollout workflows ensured consistent configuration, minimal disruption to daily operations, and reliable, on‑time delivery across all locations.
The client now benefits from a fully managed, centrally supported voice platform, reducing operational overhead while improving reliability, consistency, and speed of support.
GPK Voice FAQ
Cloud PBX is a fully hosted business phone system that runs over the internet rather than on on-site hardware. GPK manages the entire platform including provisioning, call routing, voicemail, IVR, and ongoing support.
GPK offers three tiers: SIP Trunking (Lines Only) for businesses keeping existing hardware, Cloud PBX for a fully hosted system, and Microsoft Teams Calling for Microsoft 365 organisations. All are fully managed.
Yes. GPK enables Microsoft Teams Calling so your team can make and receive business calls directly within the Teams app. Full PBX functionality including call queues, auto attendants, and voicemail is included.
Yes. GPK’s Cloud PBX is designed for Australian businesses from 5 to 500 users. It scales with your team, requires no on-site hardware, and is priced per user per month so you only pay for what you need.
GPK handles number porting as part of every deployment. Your existing business numbers transfer to the new system with minimal disruption. Standard single range porting is included in all plans.
Most standard deployments are completed within 5 to 10 business days. GPK manages the full process including number porting, call flow configuration, device provisioning, and user onboarding.
Yes. For businesses with 20 or more seats, GPK offers a 30-day Proof of Concept. Your team tests the system in a live environment before full rollout, confirming solution quality and fit before you commit.
Telcos sell lines. GPK owns the outcome. We manage carriers, platforms, and support under one managed communications service so you never deal with a telco queue again. Talk to our team today.
