Unified Communications Provider Melbourne
One system. One local partner. Everything just works.
Prosum designs, installs, and supports your entire phone and communications setup — so your team stays connected, productive, and customers can reach you without delays.
Cloud or on-premises, office or remote — we make sure your calls, chats, and collaboration tools work together seamlessly.
Book Your Free System Review
Business Phone Systems
Cloud Phone Systems
Flexible, reliable VoIP that works anywhere. Crystal-clear calls, 24/7 Melbourne-based support, and no lock-in contracts. Perfect for growing teams.
On-Premises Phone Systems
Business-grade PBX for organisations that can’t afford downtime. Secure, reliable, and locally supported for mission-critical communications.
Cordless & Wireless Phones
Keep deskless teams connected. Seamless integration, full coverage, and Melbourne-based support for any industry.
SIP Trunks
Reliable, high-quality VoIP lines connecting your PBX to the network. Flexible plans, transparent pricing, and local support.
13, 1300 & 1800 Inbound Numbers
Professional national presence with flexible routing, fast setup, and clear pricing. Keep your existing number or get a new one.
Why This Matters
Everything is managed under one roof, supported locally, and designed so your phones just work — no dropped calls, no juggling apps, no finger-pointing.
Why businesses switch to Prosum:
- One provider, full management under a single roof
- Melbourne-based support team, real people answer the phone
- Direct access to experienced technicians
- 25+ years’ experience in communications
- 150+ contact centres deployed
- 96% client retention
Built for businesses that rely on their phones. If your team can’t work when phones or internet go down, you need more than a provider — you need a partner.
