Business SIP Trunks Provider in Perth

Connect any PBX to the cloud. Keep your existing hardware and phone numbers — just replace old phone lines with fast, flexible SIP trunks over the internet. 100% compatible with Yealink, 3CX, Asterisk, and FreePBX.

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Built for Australian Business Phone Systems

SIP trunks that work with your existing PBX — no rip-and-replace required.

SIP Registration & IP Authentication

Standard SIP registration works out-of-the-box with Yealink, 3CX, Asterisk, FreePBX, Grandstream, and Polycom. We also support static IP whitelisting for office PBX systems that need an extra layer of security.

Automatic Disaster Recovery

Built-in failover routes calls to a backup destination within seconds if your internet or PBX becomes unreachable. Configure your failover to a mobile number, alternate office, or voicemail — no manual intervention required.

MS Teams Direct Routing Gateway

Use our SIP trunks as a Direct Routing gateway for Microsoft Teams. Bring your existing PSTN numbers into Teams without a Microsoft Calling Plan — ideal for businesses already running a Teams environment.

HD Voice (G.722)

Our Tier 1 network supports G.722 HD Voice for noticeably clearer calls. We also support G.711 and G.729 for maximum compatibility with legacy equipment and constrained bandwidth environments.

SIP Trunk Plans

Per-channel pricing. Scale up or down monthly. All plans include HD Voice, failover, and inbound calls.

SIP Line PAYG
$1.50
per channel / month

Pay per minute — great for low-volume calling.

  • 9¢ per local / national call
  • 4.9¢/min mobile calls
  • Inbound calls included
  • HD Voice (G.722)
  • Automatic failover
  • 24/7 network monitoring
  • Number porting available
SIP Line Unlimited Plus
$37.95
per channel / month

Unlimited AU + calls to 50+ countries.

  • Everything in Unlimited AU
  • Unlimited calls to 50+ countries
  • International DID numbers
  • Advanced call reporting
  • SLA guarantee
  • Priority support
  • Dedicated account manager

All prices include GST. Month-to-month only. Need 10+ channels? Ask about bulk pricing.

Frequently Asked Questions

SIP trunking replaces traditional PSTN phone lines with internet-based voice channels. Your existing PBX connects to our network over the internet using the SIP protocol, giving you cost-effective, scalable calling without any physical line infrastructure.
Each SIP channel supports one simultaneous call. If your business handles up to 10 calls at once, you need 10 channels. We recommend adding a 20% buffer above your peak call volume. Our team can help you size correctly based on your call data.
Yes. Automatic disaster recovery is built in. If your internet connection or PBX becomes unreachable, calls are immediately diverted to a backup destination — a mobile number, alternate site, or voicemail. This happens within seconds, with no manual intervention.
Using the G.729 codec, each simultaneous call requires approximately 0.03 Mbps. With G.722 HD Voice, allow around 0.08 Mbps per call. A standard NBN connection easily handles 20–50 concurrent calls.
Our SIP trunks work with any standard SIP-compliant PBX including 3CX, Asterisk, FreePBX, Yealink, Grandstream, Polycom, and most other systems. We also support IP authentication for office PBX systems that use static IP whitelisting.

Connect Your PBX to a Better Network Today

Tell us your PBX type and channel count and our Perth team will have you up and running fast — no long-term commitment required.

(08) 9250 4554