Skip to main content
  • CALLS TO AUSTRALIAN
    MOBILES FROM 5 CENTS!
  • Free $5 Sign Up
    Bonus!
  • Instant Setup
    on all SIP Trunks!
  • We are Aussies! :
    Australian Owned & Operated
1st Hybrid SIP Product

SIP Trunks

Hybrid

Hold, transfer, and internal calling on Hybrid SIP Trunks - built for real office workflows, with Crazytel Transcription and Call Insights. Use them like a SIP trunk or a fully featured PBX - the choice is yours.

Get started View plans
  • Office call handling on SIP
  • Trunk or PBX-style use
  • Transcription & Call Insights
Hybrid SIP Trunk
Office workflows on your trunk
Live
sydney-office-01 Hybrid
Mode
SIP + office features
Channels
Unlimited concurrent*
Endpoint
sip.crazytel.net.au
Insights
Transcripts & summaries
Hold, transfer, internal calls - same SIP connectivity, unlocked for real office use.

What is a Hybrid SIP Trunk?

First of its kind - the Swiss Army Knife of SIP trunks. Hybrid has thrown out the rule book: one trunk that works both ways, with the office features standard SIP leaves behind.

Mode 1

Use with your own PBX

Point Hybrid at your on-site or hosted PBX and keep your existing setup. Hybrid adds trunk-layer capabilities beyond your PBX - call recording, AI transcription and Call Insights, real-time stats, staff logins and more.

Mode 2

Run as a Cloud PBX

No PBX? Use Hybrid as a fully functional cloud phone system - hold, transfer, parks, queues, softphones and desk phones, without a separate platform.

Built-in capabilities

  • Real-time stats

    See trunk and call activity as it happens, not hours later in a CSV.

  • Live calls

    Monitor active calls across your Hybrid trunks from one view.

  • Call parks

    Park a call and pick it up from another extension - real office flow.

  • Integrated queues

    Queue callers on the trunk without bolting on a separate call-centre stack.

  • BLF support

    Busy Lamp Field so your team can see who’s free, ringing or on a call.

  • Grandstream auto-provisioning

    Roll out Grandstream handsets faster with auto-provisioning built in.

  • Hold & transfer

    Classic desk-phone moves - hold and transfer - without leaving Hybrid.

  • Internal calling

    Extension-to-extension calling on the same Hybrid trunk, PBX-style.

  • Staff logins

    Give each Hybrid SIP trunk its own staff logins so your team can access office features securely.

  • Webhooks

    Push call events to your own systems in real time for CRM updates, alerts and automation.

  • Call recording

    Record calls on the trunk for quality, training and compliance - available when you need it.

  • Webphone (WebRTC)

    Make and take calls in the browser with a WebRTC webphone - no desk phone required.

Business SIP Trunking plans

Choose per-trunk or account-wide billing. Hybrid SIP trunks add a separate Hybrid charge on top of your plan - shown clearly on every card below.

Showing 2 plans at a time - use Previous / Next to browse all four.

Per SIP trunk

Unhinged Plan

Per eligible trunk plan with included Australian local/national, mobile and 13/1300 calls. One outbound channel per eligible trunk.

Monthly plan fee
$20.00 / month per eligible trunk + $5 Hybrid SIP trunk fee

Minimum monthly spend $25.00

Call rates

  • Local / nationalIncluded
  • Australian mobilesIncluded
  • 13 / 1300Included
  • Internationalfrom $0.0050/min/call

Channels & lines

  • Outbound channels1
  • Inbound lines10
Hybrid SIP trunks
$25.00 / month $20.00 Unhinged + $5.00 Hybrid charge
Critical Information Summary

P.A.Y.G Plan

Business pay-as-you-go SIP trunk plan with no bundled monthly subscription.

Monthly plan fee
$0.00 / month + $5 Hybrid SIP trunk fee

Minimum monthly spend $5.00 per Hybrid SIP trunk enabled

Call rates

  • Local / national9c per call
  • Australian mobiles$0.05/min
  • 13 / 1300$0.25/call
  • Internationalfrom $0.0050/min/call

Channels & lines

  • Outbound channels20
Hybrid SIP trunks
$5.00 / month each Separate Hybrid charge
Critical Information Summary

Crackers Plan

Business bundled SIP trunk plan with included Australian local/national, mobile and 13/1300 calls.

Monthly plan fee
$35.00 / month + $5 Hybrid SIP trunk fee

Minimum monthly spend $35.00

Call rates

  • Local / nationalIncluded
  • Australian mobilesIncluded
  • 13 / 1300Included
  • Internationalfrom $0.0050/min/call

Channels & lines

  • Outbound channels1
  • Inbound lines10
Hybrid SIP trunks
$5.00 / month each Separate Hybrid charge
Critical Information Summary

Crazy 5 Plan Best seller

Business bundled SIP trunk plan with five outbound lines and included Australian call types.

Monthly plan fee
$149.95 / month + $5 Hybrid SIP trunk fee

Minimum monthly spend $149.00

Call rates

  • Local / nationalIncluded
  • Australian mobilesIncluded
  • 13 / 1300Included
  • Internationalfrom $0.0050/min/call

Channels & lines

  • Outbound channels5
  • Inbound lines10
Hybrid SIP trunks
$5.00 / month each Separate Hybrid charge
Critical Information Summary

All Business SIP Trunking plans are pre-paid. Customers can upgrade and downgrade from the self-service portal. All pricing includes GST. Regardless of plan, Hybrid SIP trunks attract a $5 per month fee each. Calls are billed in one-second blocks. No call connection fees. Compatible with most ATAs, VoIP gateways, IP phones, softphones and virtual PBXs. Crackers Plan and Crazy 5 Plan cannot be used for call centre, telemarketing or outbound sales use.

Capability

Real Time Monitoring

See active calls, parks, queues and presence as they change - so your team always knows who is free, who is busy, and what needs attention.

  • Live calls

    Watch active Hybrid calls refresh while the page is open.

  • Call parks

    See parked callers and pick them up from any extension.

  • Real-time stats

    Answered, missed and talk time without waiting on reports.

  • DND status

    Know instantly who has Do Not Disturb switched on.

  • Who is on a call

    Presence that shows available, ringing or on a call.

  • Queue wallboards

    Keep queue depth and wait times visible for the floor.

  • Presence

    A live view of team availability across Hybrid trunks.

  • Fleet health

    Spot registration and config issues before they become outages.

Capability

Grandstream Provisioning

Set up Grandstream GRP handsets on Hybrid SIP Trunks with a click of a button - accounts, BLF keys and line settings land on the phone without manual fiddling.

  • One-click provisioning for Grandstream GRP devices
  • Push BLF, parks and extensions to the handset automatically
  • Roll out phones faster with less desk-side configuration
Grandstream GRP phone screen showing provisioned BLF keys for Dean, Park 701, Tom and Phil

Capability

Call Recording

Enable or disable call recording on Hybrid SIP trunks, then browse, play and manage captures - built for teams and developers alike.

$1 / GB Billed on the 1st of every month

  • Turn recording on or off per Hybrid trunk as needed
  • Download recordings from the Crazytel portal or via API
  • Developer-first access for your own workflows and systems

Premium voice integrations

Supercharge Your Trunks with Webhooks

Connect your voice infrastructure to Slack, Discord, MS Teams, Google Chat, or custom HTTP servers. Stream real-time events for calls, registrations, recordings, and failures.

Configure Webhooks
  • Discord

    Send call start, answer, or hangup notifications with rich embed colours and markdown formatting.

  • Slack

    Stream real-time registrations, DND toggles, and critical voice events directly into your workspace channels.

  • MS Teams

    Publish Adaptive Cards with call directions, durations, and response details to keep teams coordinated.

  • Google Chat

    Deliver lightweight text updates for caller IDs, extensions, and registration status directly to Chat spaces.

  • Custom HTTPS

    POST standard JSON payloads to your servers, secured by HMAC-SHA256 signatures and retry backoffs.

  • Ultra-low latency Events POST in milliseconds straight from the core voice switch.
  • Reliable queueing Backoff scheduling ensures delivery even during target system downtime.
  • Secure HMAC Verify payload integrity with a secure, rotated subscription secret.
  • Circuit breaker Auto-pauses endpoints experiencing chronic errors to protect your services.

Capability

AI & Call Transcription

Turn Hybrid calls into searchable transcripts and Call Insights - sentiment, topics, intents and summaries your team can action in the portal or pull via API.

  • Crazytel portal
  • API access
  • AI call transcription with Caller / Callee labelled dialogue
  • Call Tone Insights - positive, neutral and negative mix plus avg sentiment
  • Staff by tone ranking and best-tone highlights
  • Topic detection, intent recognition and call summarisation
  • Developer-first access for your own workflows and systems

Capability

Webphone (WebRTC)

Give staff custom logins for Crazytel's built-in browser softphone, or connect third-party WebRTC softphones and apps to the same Hybrid trunk - receive and make calls without IP desk hardware.

  • Built-in browser webphone
  • Third-party WebRTC
  • Custom logins for staff to use the built-in WebRTC phone
  • Works with third-party WebRTC softphones and apps, not only Crazytel's webphone
  • Receive and make calls in the browser - no IP handset required
  • Browser push notifications so you do not miss inbound calls
  • Built for remote teams and work-from-home setups

Instant signup

Get Hybrid SIP Trunks instantly

Open a Crazytel portal account in minutes, pick a business plan, and start using Hybrid SIP Trunks - no lock-in contracts.

Sign up now 1800 272 998