If you’re deploying a gateway and interfacing to Telstra’s Australian “SIP Connect” SIP trunk service you’ll need to know a few values. Most of the below you’ll get from the relevant Telstra and/or gateway integration guides.

Each state and territory has its own SBC and Telstra STRONGLY prefers you reference these by their host name and use Telstra’s DNS to resolve this. Their requirement here is that you add a conditional forwarder to your corporate DNS for the “nipt.telstra.com” domain.

The above isn’t to every customer’s liking, or it’s perhaps not something they’re able to do in the required timeframe. Your alternative or temporary workaround is to take the potentially risky step of hard-coding the IP address into the gateway’s Hosts table.

Here’s a table with all of the values you need.

When you’re testing this ahead of commissioning you need to know that Telstra’s SBC address won’t respond to pings – but they’ve kindly provided a separate address that will.

Revision History

14th December 2015: Updated to indicate Tasmania, ACT and NT are deprecated. In those states, use Victoria, NSW & SA respectively. Source: e-mail from DW, TIPT Commissioning, 11/12/15.

– G.