What we do

Cloud Hosted telephone systemsPROSUM specialises in Telephony, Data, Unified Communications and Contact Centre solutions.

PROSUM are experts in communication & technology solutions. We provide office phone system recommendations, including on-premises phone systems, VoIP phone systems and cloud-based solutions to businesses of all sizes, across all industries, right around Australia.

How we deliver

Whether you need a simple phone system for your business, or a complete overhaul of your communications, we’ll find a solution that’s right for you. From national data network access and business grade data and internet services, to contact centre communications, SIP lines and more, our team will deliver a complete solution for your organisation.

Who we help

No matter what business you’re in, our team have the knowledge and expertise to provide the right advice and deliver a solution. We’ve helped clients of all shapes and sizes right across Australia and New Zealand – and across a huge variety of industries. From government departments to medical and health services; from tourism to technology – we have real experience helping organisations like yours. Here’s a selection of our recent clients.


Get in touch to find out how we can help you.

Why Choose Prosum?

We Know Communications

  • 50+ years of combined experience in designing, integrating and implementing highly available and robust telephone systems that rely on 100% uptime.
  • No outsourcing, we have in-house certified technicians.
  • We’re a large telephone system specialists.
  • We’ve partnered with industry-leading firms.

We Provide Tailored Support

  • Over the phone support
  • Remote help-desk support
  • Onsite service & support
  • Tailored maintenance plans
  • Guaranteed rapid response times.
  • Australian-based 24/7 support.

We're Always Ready To Help

  • Businesses of all sizes.
  • Across all industries.
  • Metro & regional areas.
  • Australia wide.

What Our Clients Say about us

  • We conducted a review for potential VOIP providers that could implement a reliable and feature rich cloud based IP Telephony platform. After reviewing other providers, we selected PROSUM who was able to successfully transition our College to a Cloud IP Telephony platform. PROSUM’s expertise is of the highest standard and I have no issues in recommending their solutions and services. Staff are particularly impressed with the high quality audio afforded by the HD handsets and due to the outstanding clarity, wonder if the other party is still there as there is no ‘pops’ or ‘clicks’ on the line.

  • We needed an experienced ICT 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.

  • 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.

  • 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 provider we can rely on to provide and maintain our telephony and contact centre environment.

  • We recently selected PROSUM to supply, install and support a NEC SV9100 IP Telephony platform for our new medical centre precinct. The team at PROSUM were very professional throughout the installation process and have been a pleasure to deal with.

    Geoff Fazakerley, Executive Director, Diagnostic Services Infrastructure - Cabrini Health
  • 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!