Sip Trunks

See How Much Your Company Could Be Saving With Our Competitive SIP Trunk Plans And Call Rates.

  • Reduce your business call costs.
  • Keep your existing phone numbers.
  • Easy to set up.
  • Easily scalable to match your business growth.

Your smartest business choice is to save money with Prosum’s SIP trunk plans and call rates when you switch to SIP for your business communication needs.

SIP Trunking lets you use video conferencing, instant messaging, and even share documents over your existing VoiP system.

It integrates with a wide range of IP-PBX systems and is easily scalable, so it grows along with your business.

Sip Trunking replaces traditional PSTN/ISDN line rental fees and call charges, saving you a fortune in ongoing costs.

Benefits of SIP

  • Eliminates or reduces line rental and call costs.
  • Keeps your current number for convenience.
  • Easily grows with your company.
  • Integrates with your current IP-PBX system.
  • Free calls between offices on the same set-up.
  • 24/7 support Australia-wide.

Who is it for?

Any business looking for smarter, more flexible and reliable business call solutions.

View our SIP trunk plans & Call Rates here

  • See how much your company could be saving with our competitive SIP trunk plans and call rates.

    Get a free quote now. Call us now on 1800 007 229 or fill out this form to contact PROSUM online. We provide metro and regional support Australia wide!

Why choose Prosum's SIP plans?

  • Competitive pricing – We offer very flexible pricing on SIP trunk plans and call rates.
  • No contracts – You are not locked in and can cancel your plan at any time.
  • Superior service – Our highly experienced team offers you tailored support.
  • Reliability – Our network has 99.9% uptime on calls.
  • High call quality – No more crackles or distortions on your calls.
  • Local support team – Our support team is Australian-based and available 24/7.

At Prosum we offer the flexibility with two plans;

  • Unlimited Call Plan: You pay a monthly hosting fee but you can make unlimited local, national and calls to mobiles within Australia.
  • Monthly Pay-as-you-go Plan: You pay a smaller monthly hosting fee, but you pay for all calls you make – local, national and calls to mobiles within Australia every month.

With 20+ years of experience, no one knows technology and communication like PROSUM.

  • We provide metro and regional support Australia wide.
  • We help businesses of all sizes.
  • All industries.
  • Professionalism at its highest standard. Over the many years of association our firm has utilised and highly recommend a variety of PROSUM'S services including data and telephone. More recently our firm relied on their advice and direction when installing and upgrading our telephone system. We continue to use these services with great leadership by David Colletta and a great team.


Our competitive SIP trunk plans and call rates are the sound communication solution for your business.

Call us now on 1800 007 229 to see how SIP trunking will work for you.