SIP trunking and VoIP are quickly becoming the main players in the business telecom sphere – and it’s not difficult to see why.

The features that suddenly become accessible after changing from the traditional business phone system, to SIP lines and VoIP, are enough to help any business streamline and boost their communications.

While features may vary depending on your provider, most will provide:

Cheaper International Calling

The lower cost of international and long-distance calls is definitely seen as one of the main benefits of SIP trunking. 

Business is rapidly expanding beyond borders, making international calling harder to avoid. From a traditional PSTN line, these costs could quickly add up and make you start to question your partnerships. Thankfully with SIP trunking, you can better predict and plan your costs, with the peace of mind that you’re still going to cover your costs.

Direct Inward Dialing (DID)

Direct Inward Dialing (or DID Numbers) are virtual numbers that redirect to your company phone lines.

This enables employees/ users to have direct lines, without the need for any additional telecom infrastructure, or to create a local presence in any area – regardless of where you are based.

Advanced Voicemail Features

Many IP PBX systems include advanced voicemail features such as voicemail to email, and the SIP trunking protocol supports this. 3CX also allows users to set different voicemail greetings based on status, and to access your voicemail from any desk phone across your organisation. Hotdesking made easier!

Read more on managing your voicemail with 3CX.


One of the main selling features of SIP trunking is definitely scalability; bringing value and savings to businesses of all sizes.

SIP trunking is inexpensive, especially in comparison to the traditional PSTN networks, and accessible to small businesses starting out and in need of a phone system. As the business grows, additional SIP lines can be added quickly and at low cost, allowing growth to their telecom networks with minimal headaches and no physical infrastructure (are these one in the same?!).

1800 & 1300 Numbers

Like DID numbers, SIP trunking also supports the use of 1800 & 1300 numbers – also known as toll-free or inbound numbers.

These inbound numbers are perfect for businesses with a national presence, offering customers lower call costs wherever they are in Australia, and providing a more professional appearance for your business.

Same Number – Different Location

SIP lines are not constrained by physical lines, so moving locations or maintaining a remote workforce, is as easy as if everyone were in the office.

Different IP PBX’s will have different ways of managing users, however most will follow the same principles – read up on 3CX extension management here.

Business Continuity

Our current climate in 2020 highlights the need for a good business continuity plan.

Majority of businesses have been forced out of their offices and into their home offices and loungerooms, and now even entire call centres are operating like this. The ease at which SIP lines can be re-routed make them an obvious choice for telecom in a business continuity plan.

Your customers continue to call the same numbers, and the staff continue to answer from wherever they are.

Whether you’re in the beginning stages of an awesome new start-up, or a successful business looking to expand – choosing SIP is the way forward, to enhance your telecommunications and empower your (now) remote workforce.

For more information on SIP trunking, and how we can help kick-start your journey into the world of VoIP – get in touch!