Synex Technology delivers comprehensive IT solutions tailored for small and medium businesses. We act as your outsourced IT department, providing IT support, telephony services, NBN, fire internet, web design, and digital marketing. We make sure  your communications stay connected, and your online presence continues to grow, all through a single trusted technology partner.

Contacts

Suite 405 L4/303 Adelaide St Brisbane City QLD 4000

support@synex.com.au

1300 816 777

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SIP Trunk

SIP Trunk

Carrier-Grade SIP Trunking for Modern Business Communication

If your business is ready to transition from legacy phone lines to a more flexible voice platform, Synex delivers secure SIP Trunk solutions that connect your voice infrastructure to the cloud over internet-grade connectivity. Our SIP Trunking services support scalable call concurrency, number porting and disaster-resilient routing, and integrate seamlessly with VoIP Solutions or Hosted PBX Solutions to modernise your communications without hardware constraints. For organisations that use Microsoft tools, we can also enable Microsoft Teams Calling for a unified, cloud-native phone experience.

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SIP trunk

What are the main advantages of SIP Trunk?

The main advantages of SIP Trunk are lower call costs, especially for long-distance and international calls, the ability to handle multiple simultaneous calls, easy scalability by adding or removing channels, and flexibility in managing business communications over the internet. It is widely used in offices, call centers, and cloud-based phone systems.

How They Work

SIP Trunk links your PBX to the internet via a provider, enabling multiple simultaneous calls, reducing costs, improving call quality, and ensuring flexible business communication.

01
Connect your PBX
Connect your IP-PBX or Hosted PBX to our SIP Trunk over a secure internet or private link to enable modern VoIP calling.
02
Use a trusted SIP Trunk provider
We provide carrier-grade SIP Trunking with Australian numbers, 13/1300/1800 routing and options for global DIDs.
03
Route calls over IP instead of physical lines
Calls run over IP rather than traditional ISDN or analogue services, giving you more flexibility and easier centralisation for multi-site businesses.
04
Scale channels as you grow
Add or remove call channels quickly, supporting busy periods, campaigns and growth without installing new physical lines.

What We Offer?

Reliable SIP Trunking services

Cost-effective calling plans

High-quality, HD voice communication

Reliable & secure network

Global and local DID numbers

24/7 technical support

Why Choose Our SIP Trunk Service?

Reliable

Ensures your business communication runs smoothly without any interruption.

Scalable

Easily add or remove channels as your business grows.

Cost-Effective

Reduces local and international calling expenses for your company.

High-Quality

Provides clear voice calls with excellent performance every time.

sip trunk

Frequently Asked Questions

Can we keep our existing phone numbers?

Yes. In most cases Synex can port your existing geographic, 13, 1300 and 1800 numbers onto our SIP Trunk service so you keep the same business identity while upgrading your trunking.

What internet connection do we need for SIP Trunking?

We recommend business-grade NBN, fibre, fixed wireless or 5G with sufficient bandwidth and QoS configuration for stable voice quality. Synex can supply and manage connectivity as part of the solution.

Will SIP Trunking work with our existing PBX?

Most modern IP-PBX systems support SIP Trunking. Synex will review your setup and advise on compatibility, configuration, or gateway options if required.

Can you integrate SIP Trunks with Microsoft Teams or Hosted PBX?

Yes. Synex provides SIP Trunks for on-prem PBXs, Hosted PBX platforms, and Microsoft Teams Calling using Direct Routing.

Where do you provide SIP Trunk services?

We’re based in Brisbane and provide SIP Trunks to businesses across Australia, including multi-site deployments.

How many SIP channels do we need?

The number of channels depends on how many simultaneous calls your business handles at peak times. Synex can estimate the right capacity based on your team size, call flows, and expected growth.

Get a SIP Trunk Quote for Your Brisbane Business

SIP Trunking is a cost-effective and scalable solution that delivers high-quality voice, flexible integration, and reliable communication with built-in redundancy, making it ideal for modern business needs.

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