Sip Trunks

The alternative to traditional business phone Lines

Reduces Line Rental Costs

Pay Cheaper Call Rates

Integrates With All Major PBX's

Easily Grows With Your Business

See How Much Your Business Could Be Saving When You Switch to SIP

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

It integrates with a wide range of IP-PBX systems and is easily scalable, so it grows along with your business. With SIP Trunks, you can quickly and easily add more lines and users as your business grows.

Benefits of SIP Trunks for your Business

  • 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?

  • Ideal for businesses looking for smarter, more flexible and reliable business call solutions and wanting to dramatically reduce their costs.


View our competitive SIP trunk plans & Call Rates here

  • See How Much Your Business Could be Saving when you switch to SIP.

    Call us now on 1800 007 229 or fill out this form to find out more.

Why choose Prosum for SIP Trunks?

  • 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 99.99% uptime on calls.
  • High call quality – Your business will experience crystal clear voice 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.

Our competitive SIP trunks are a sound communication solution for your business.

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