Business SIP Trunking

Connect your PBX to Crazytel SIP Trunking

Enterprise-grade SIP trunks for your on-premise PBX, from $0/month. Instant setup, free porting, and no lock-in contracts.

Plans from $0/month
Instant setup
No contracts

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SIP Trunks Provision endpoints for your PBX or softphone

Registered

Office PBX Enabled

Username: 10285794
Caller ID: 07 3073 1555
SIP domain: sip.biz.crazytel.net.au
Auth: SIP registration

Point FreePBX, 3CX or VitalPBX at sip.biz.crazytel.net.au - inbound and outbound in minutes.

Residential VoIP

Crystal-clear home phone plans from 50c/month

Move your home phone to Crazytel and save up to 70% off your normal landline bill, with easy instant setup on the NBN.

Save up to 70%
Instant setup
No lock-in contracts

Home Phone Residential SIP trunk on the NBN

Connected

50c Minimum monthly fee

70% Avg. savings vs landline

Free CAT-A number porting

4x Redundant network

Keep your existing number and handset - just plug in and go.

Business SMS

Reach customers instantly with two-way SMS

Send single or bulk SMS, schedule campaigns, and configure real-time webhooks - from just 5¢/SMS with zero monthly fees.

From 5¢/SMS
No monthly fees
Bulk & scheduled sending

Get Started Instantly Explore SMS Platform

SMS Gateway Two-way business messaging platform

Delivered

Bulk & scheduled SMS campaigns
REST API & real-time webhooks
Virtual mobile numbers
Opt-out list management

Custom alphanumeric Sender ID included - no setup fees.

Premium Features

Add-ons that make your comms smarter

AI voicemail transcription, auto attendants, ring groups & more - premium features you can add to any plan for just $1/month.

AI transcription
SMS & email alerts
From $1/month

Get Started Instantly Explore Premium Features

Premium Voicemail AI-powered inbox for every mailbox

Live inbox

AI transcription - 10¢/minute
Free email notifications
SMS alerts - 5¢/segment
Auto attendant & ring groups

Assign any DID to a mailbox by name - no SIP knowledge required.

Global Network

One of the most resilient VoIP networks in Australia

Our multi-redundant infrastructure spans active Points of Presence across 6 countries, with automatic failover keeping your calls online no matter what.

9 active PoPs
Quad-redundant core
Failover in under 60s

Explore Our Network Get Started Instantly

Global Network Active Points of Presence

All systems online

Australia Sydney · Melbourne · Brisbane · Perth

New Zealand Auckland

United States Los Angeles

India Mumbai

Philippines Manila

Singapore Singapore

9 active PoPs across 6 countries - automatic failover in under 60 seconds.

AI Voice Connectivity

Connect your numbers to AI voice agents

AI Bridge routes Crazytel managed phone numbers straight to leading AI voice platforms - OpenAI Realtime, Vapi, Retell and Grok - from just $0.0025/min inbound.

From $0.0025/min inbound
SIPS & Secure SIP
OpenAI · Vapi · Retell · Grok

Get Started Instantly Explore AI Bridge

AI Bridge Managed number → AI voice agent routing

Connected

OpenAI Realtime voice agents
Vapi & Retell telephony
Grok voice AI
SIPS & secure media negotiation

Point any managed Crazytel number at your AI agent - no custom SBC required.

Hybrid SIP Trunks

Office workflows on Hybrid SIP Trunks

Hold, transfer and internal calling on SIP - or run like a full PBX. Built for real office workflows, with Crazytel Transcription and Call Insights from $5/month per trunk.

Office call handling on SIP
Trunk or PBX-style use
Transcription & Call Insights

Get Started Instantly Explore Hybrid SIP Trunks

Hybrid SIP Trunk SIP connectivity + office call features

Hybrid live

Hold, transfer & internal calling
Use as SIP trunk or full PBX
Crazytel Transcription
Call Insights & live monitoring

One product for PBX trunks and cloud office features - $5/month Hybrid fee per trunk.

Our Best-Selling Products

Enterprise-grade communication tools scaled to fit your business, with instant automatic provisioning.

A Global Network Like You've Never Seen...

We deploy premium local hardware nodes globally to guarantee ultra-low latency, outstanding call audio fidelity, and continuous zero-downtime reliability.

Datacentres

Sydney Melbourne Brisbane Perth New Zealand Los Angeles

Network Redundancy

CrazyPBX cloud system

Double Redundant Network

Automatic instantaneous failover routing between Sydney & Melbourne datacentres.

SIP Trunking Nodes

Sextuple Redundant Network

Multi-zone routing coverage across Sydney, Melbourne, Brisbane, Perth, NZ, & Los Angeles.

Why Choose Crazytel?

We are breaking standard industry norms to deliver ultra-modern, highly advanced technologies at premium pricing to the Australian market.

Instant Provisioning

All our HostedPBX and SIP Trunk communication systems feature fully automated, immediate setup.

100% Australian Owned

Gain absolute peace of mind knowing our operations are entirely local, owned, and run right here in Australia.

Connect Anywhere

On the move or travelling internationally? Access and operate our communication systems seamlessly from anywhere.

User-Friendly Settings

No advanced technical experience required. Our portals are custom engineered to be perfectly intuitive.

Zero Lock-In Contracts

We never tie you down with contracts. We believe in earning your loyalty purely by keeping you happy every single day.

Ready to Switch?

Upgrade to enterprise-grade communications without costing a fortune.

CrazyPhone App

No Hardware Needed – Use Crazytel's Free Softphone

CrazyPBX delivers complete flexibility over how and where you manage call communications. Skip heavy hardware IP desk phones entirely. Our elite, custom softphone application runs seamlessly on your mobile or desktop and comes included free with every extension.

Supported Platforms