SIP Trunks Built for Business

Enterprise-grade SIP connectivity with transparent pricing. No hidden fees, no surprises. Just reliable voice over your existing infrastructure.

2-200
Channels per Trunk
100%
Australian Network
$0
Setup Fees

Features

Everything you need from your SIP Trunks solution

Geo-Redundant Infrastructure

Multiple data centres across Australia ensure your calls always connect. If one site goes down, traffic automatically routes through another — no intervention needed.

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Per-Second Billing

Pay only for the seconds you use. No rounding up to the nearest minute — every call is billed to the exact second.

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No Lock-In Contracts

Month-to-month flexibility with no minimum terms. Scale up or down as your business needs change — cancel anytime.

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Geo-Redundant Infrastructure

core

Multiple data centres across Australia ensure your calls always connect. If one site goes down, traffic automatically routes through another — no intervention needed.

Your voice infrastructure runs across geographically separated data centres in Perth, Sydney and Melbourne, with additional points of presence for peering and interconnection. Every component — SBCs, media gateways, signalling servers — is fully redundant across sites. If an entire data centre goes offline, calls automatically route through the surviving site with no perceptible interruption. There is no single point of failure in the call path, from your handset to the PSTN. This is not disaster recovery you have to invoke manually. Failover is automatic, sub-second, and tested continuously. Your calls keep flowing while we handle the infrastructure.
Dual data centres in Perth and Sydney
Automatic sub-second failover
No single point of failure in the call path
Continuous failover testing — no manual invocation

Bulk Channel Discounts

Volume pricing that rewards growth. The more channels you run, the lower your per-channel cost — with savings that scale alongside your business.

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99.99% Uptime SLA

Carrier-grade reliability backed by a published service level agreement. Less than 53 minutes of downtime per year — with service credits if we miss it.

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G.711 & G.729 Codecs

Support for industry-standard voice codecs

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Failover Routing

Automatic call rerouting when primary destination is unavailable

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Number Porting

Keep your existing phone numbers when you switch

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Call Analytics

Detailed reporting and insights on your call activity

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Choose Your Plan

Flexible pricing to match your business needs

Budget

TrunkPAYG

Pay as you go SIP trunking

$4.99
/channel (line)

Call Rates

  • Local/National$0.0314/min
  • Mobile$0.0890/min
  • 13/1300$0.3244/call
Get Started

TrunkEssentials

Unlimited local & national

$14.95
/channel (line)

Min. 2 channels/lines

Call Rates

  • Local/NationalIncluded
  • Mobile$0.0890/min
  • 13/1300$0.3244/call
Get Started
Most Popular

TrunkPlus

Unlimited local, national & mobile

$35.00
/channel (line)

Min. 2 channels/lines

Call Rates

  • Local/NationalIncluded
  • MobileIncluded
  • 13/1300$0.3244/call
Get Started
Premium

TrunkMax

Included everything, no bill shock

$42.00
/channel (line)

Min. 2 channels/lines

Call Rates

  • Local/NationalIncluded
  • MobileIncluded
  • 13/1300Included
Get Started

All prices are in AUD and include GST. Additional call rates may apply.

Technical Resources

Everything you need to connect your PBX to our SIP network.

Customer Success Stories

See how businesses are modernising their voice infrastructure with SIP Trunking.

Contact centre handles 3x call volume

Our ISDN lines were maxed out and quotes for more were astronomical. Simtex SIP trunks gave us unlimited capacity at a fraction of the cost. We handled our busiest season ever without a single busy signal.

David Park

Australian Support Services

300%increase in call capacity

Ready to modernise your phone lines?

Replace legacy ISDN and analogue lines with SIP trunks. Lower costs, better features, instant scalability.

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