Fusion PBX SIP Trunk Configuration Guide
Simtex SIP Trunks from $4.99/month
Business-grade SIP trunking with geo-redundant infrastructure, crystal-clear audio, and Australian-based support. Pay-as-you-go or unlimited plans available.
SIP Servers:
- West Coast (AU):
siptcp.simtex.com.au - East Coast (AU):
siptcpeast.simtex.com.au
Choose the server closest to your location. FreeSWITCH fully supports SRV record resolution — if one of our server farms is unreachable, your FusionPBX will automatically failover to our backup platforms.
Do not configure FusionPBX on an external IP address unless you are aware of the risks and have appropriate security measures in place. In most cases, no port forwarding is required.
East Coast? Replace
siptcp.simtex.com.au with siptcpeast.simtex.com.au in the SIP Server and Realm fields if your server is located on the East Coast of Australia.For security, limit the channel count to the number you'll actually need day-to-day. This prevents potential abuse if your system is compromised.
Enable Force Ping under the Advanced section for each extension. This sends OPTIONS packets to detect if the extension is reachable — useful for monitoring phone status.
Australian Dial Patterns
| Type of Number | Regular Expression | Example |
|---|---|---|
| Local (with area code) | ^(\d{8})$ | 94883344 |
| Interstate (with area code) | ^(0[2-9]\d{8})$ | 0894883344 |
| Emergency | ^(000)$ | 000 |
| 1300/1800 Numbers | ^(1[38]00\d{6})$ | 1300888519 |
| 13 Numbers | ^(13[1-9]\d{3})$ | 131313 |
| International | ^(0011\d{1,15})$ | 00116189488334 |
Last updated 26 March 2026