Business Phone Systems & Internet for Melbourne Businesses
Cloud or on-premise phones, fast business internet, contact centres, CCTV and IT support — all managed by a local Melbourne team. Keep your team connected, productive, and secure.
What We Do
Why Businesses Choose Prosum
100 +
Years of combined IT & telco experience
25 +
Years supporting Australian businesses
150 +
Contact Centres successfully set up & running
96 %
Of clients stay with us because we deliver
What Our Customers Say About Us
I’m very glad and fortunate that I had PROSUM looking after my IT and CCTV. They are trust worthy, reliable and very easy to work with.
Mina Zacharia,
MANAGER | ASTRO MEDICAL IMAGING
Very good and prompt service. Friendly staff.
Paul Bhatti,
WATSONIA VETERINARY CLINIC
I recently had a new VC installed from the team at Prosum. David Colletta and his team were not only professional with the installation, but at all times, the communication was second to none from them to see at each step where we were at. The installers were brilliant, and to top it off, they cleaned after the installation leaving us nothing to do. How refreshing this was. Again, I cannot speak highly enough of the team at Prosum; their professionalism was second to none, and their on-time approach was exactly that on time! Please do yourself a favour and get the team out there to look at what your needs are for the business, big or small. They have it all! Well done and thank you.
Yolanda Di Ludovico,
FIRST SUPER
We needed an experienced ICT VoIP provider that could implement a new telephony solution without affecting existing telephony services and business operations. After reviewing other providers, we selected PROSUM who was able to successfully migrate all our users onto the new NEC platform and complete the project in a timely manner. PROSUM continue to provide support for our NEC Telephony and Contact Centre environment and I would recommend their services to other organisations and enterprises.
Andrew Trinh,
ICT INFRASTRUCTURE & SERVICE DELIVERY MANAGER - VICTORIAN CYTOLOGY SERVICE LIMITED
We are constantly looking to continuously improve the way we do business and service our customers and distributors within our customer service operations. This is why we selected PROSUM as our telephony and contact centre provider. Their experience means we have a VoIP provider we can rely on to provide and maintain our telephony and contact centre environment.
Therese Chakour-West,
INFORMATION TECHNOLOGY MANAGER - STIHL
Aitken Real Estate had to move office and sought David Colletta of Prosum advice about switching our telephony to the cloud. Extremely helpful, no-nonsense information and can get the job done. Their tech Antoine was sensational. No delays, no problems. Highly recommend!
Stephen Aitken,
AITKEN REAL ESTATE
Thanks to the PROSUM team for the successful migration of the Brisbane phone system. A great deal of planning and hard work in the preparation resulted in a smooth migration with zero downtime to the business – a reflection on the dedication and preparedness to the project. Thank you.
Raphael Cheah,
Network Administrator - AECOM
Are your phones or internet letting your business down?
We see it all the time:
- Dropped calls or unreliable phone lines slowing your team down
- Slow internet affecting productivity and customer service
- Having to juggle multiple providers and support contacts
- Technology that doesn’t scale as your business grows
We fix that. Reliable business phone systems and internet that just work, installed and supported locally.
Ready to fix your phones and internet?
Telephone Systems & Unified Communications
Cloud Phone Systems
Step into the future with AI-powered voice, video, chat and file sharing.
Explore Cloud Phone Systems
On-Prem Phone Systems
Prefer full control? We’ve got secure, site-installed systems to match.
See On-Prem Options
Cordless & Wireless Phone Systems
Stay mobile and connected anywhere across your workplace.
Stay Connected On the Move
13/1300/1800 Inbound Numbers
Enhance your reach and improve service with national numbers.
Get Your Inbound Number
Customer Experience Solutions
AI-Powered Contact Centres
Flexible, fast-to-deploy solutions that elevate customer service, no matter how they reach you.
Business Internet Services
Fast & Reliable Internet
High-speed, reliable NBN plans with unlimited data, no lock-in contracts and local Aussie support.
Commercial CCTV & Cloud Video Surveillance
Comprehensive Security For Your Business
24/7 monitoring, hassle-free installation, and real-time alerts to protect your business around the clock.
Proactive Tech Support
Local Tech Support You Can Count On
Tailored IT support plans and on-demand help to keep your business running smoothly.
Our Technology Partners
Why Melbourne Businesses Trust Prosum
Custom Solutions
Tailored for growing Melbourne businesses — not one-size-fits-all.
Local Expertise
Real people, local to Melbourne, who actually answer the phone and solve issues.
Scalable Systems
Technology that grows with your business, so you’re never left behind.
Trusted Experience
Trusted by Australian businesses for over 25 years.
All-in-One Service
Phones, internet, support, and security — handled by one team, so everything just works.
Get a call back from a local expert — no pressure, just friendly advice tailored to your needs.
'Extremely helpful, no-nonsense advice. No delays, no problems'. Switch to Prosum today.
