Telephone Systems

Australia’s leading supplier of traditional & hosted PBX business telephone systems.

We’re Dedicated To Helping You Find The Best Phone System Solution For Your Budget.

With end-to-end dedicated Australian support.

Hosted PBX Phone Systems

On-Site Telephone Systems

Contact Centre Phone Systems

VoIP Telephone Systems

Let’s Talk About What Prosum Can Do For You.

Contact us for a free consultation & tailored telephone system solution today.

1800 007 229

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Are You Looking To Upgrade Or Invest In A New Telephone System?

We can help whether you want to reduce your call costs, need a simple VoIP telephone system or a full unified communications suite.

Prosum can tailor a telephony solution to meet your unique requirements – now and in the future. In the cloud or on your premises.

From the initial consultation right through to installation and ongoing support, we take care of everything. And, all of our expert staff are based in Australia, so you’ll get the ongoing support and training you need.

what we can do for your business

Fully-Featured Hosted PBX Telephone Systems

Office Phone Systems for Call Centres

Installations & Phone System Maintenance

Onsite Service & Help Desk Support

Business Phone Lines & SIP Trunks

Business-Grade NBN & Fibre Internet

When It Comes To Choosing The Right Provider For Your Business Phone System, You Can Count On Prosum.

Since 1998, we’ve been helping businesses of all shapes and sizes with their communication needs – in Melbourne and Australia-wide.

We’ve partnered with industry-leading firms to provide you with the best products for your office or contact centre. We offer outstanding product quality, choice and technical support, all backed by manufacturers’ warranties. And our in-depth knowledge of these products means you get exactly the system you need.


Contact Centre Office phone systemsNEC On-Premises office phone systems technical Support

Why Prosum?

Spot-on Solutions

20+ years of experience designing, servicing and maintaining the best end-to-end phone system solutions for organisations of all sizes, Australia-wide.

Awesome Customer Service

We’re always ready to help. From the initial consultation right through to installation and ongoing support, we’re with you every step of the way.

what our clients say about us

  • 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.


Go on, request your free consultation today.

1800 007 229