Why use SIP Trunks?

We get that that quite a bit. We would love to say "cause it's sexy!". But, that's not really an answer, isn't it!?! So here goes...

There are plenty of reasons to make the switch. SIP Trunking will cut business costs, prepare your communication for the NBN era and may improve the quality and stability of your phone service.


When you grow, your SIP Trunk grows with you. Because there's no more copper to pull, unavailable ports are so yesterday!


With SIP Trunks, your calls go through your data network. No more bundles of messy copper. This saves you some serious cash.



Future Proof

In the NBN era, SIP Trunks will be the global standard for voice communication as copper cables are systematically replaced with fibre-optics.

Establish a SIP Trunk

Your Office IP PBX /

Unified Comms Server


Office Internet

Broadband Internet


Establishing a SIP Trunk is super easy and best of all it's virtually instant. Unlike the traditional way of getting your phone lines up and running - schedule a time for a technician to come over, wait, and more waiting. That's so yesterday...

Your office IP PBX or Unified Communication Server needs to know the @voice server. It's like going on a date. They need to know each other so that both incoming and outgoing calls know where to go.

On your @voice portal, you'll just need to let us know your IP Address of your equipment. And on your equipment, you just need to let it know that you'll be making and receiving calls from the @voice domain (

Tha's pretty much it. A SIP Trunk has been established.

SIP Trunking

frequently asked questions

What port does Sip Trunk services use?

The ports would generally be defined by your IP-PBX, we don't require any specific ports to be configured. By default, SIP signalling on most IP-PBX would be set to 5060. RTP traffic will usually have a range of ports set by the specific IP-PBX. SIP signalling originating from @voice will always be port 5060.

Can you help with PBX configurations?

If you are working with either a single type or multiple types of PBX, we will be happy to schedule an interoperability with you to ensure that your PBX will work well with the @voice platform. While all major IP-PBX brands do support SIP trunking, we do not guarantee that your IP-PBX will work as-is, nor that all PBX functionality will be available. Typically some expert configuration is required. We can provide only technical assistance on the interoperability between PBX and the @voice platform. Should you have any compatibility issues, we will be able to tell you if the fault is on our end or yours. If the fault is at your end, you will need to seek assistance from the manufacturer.

How fast does my Internet connection have to be?

A SIP call doesn’t require very much bandwidth, so you can surf the Internet and talk on the phone at the same time.

For high usage/active user, a QoS modem/router is required to ensures that the voice quality/traffic are going smooth without any interruption.

How are SIP Trunks authenticated?

The @voice platform enables both IP authentication as well as username/password combinations. If your device is on a static IP, you can use IP authentication to authenticate your calls. However, if you have devices that are on a dynamic IP, you can use the username/password combination to authenticate an Account.