> For the complete documentation index, see [llms.txt](https://teamhelp.sipgate.co.uk/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://teamhelp.sipgate.co.uk/integrations-and-connections/using-sipgate-trunking/can-i-use-my-pbx-behind-a-nat-device.md).

# Can I Use My PBX Behind a NAT Device ?

**NAT detection** is **not supported** with sipgate trunking.\
To ensure smooth operation, please verify that all IP addresses and ports of your PBX are correctly configured and accessible.