FreePBX and DDNS

[Stewart1 (Stewart)]

On a recent FreePBX, you can use a domain name in Asterisk SIP Settings → External Address.
According to

FreePBX 15 behind NAT: HowTo setup dynamic external IP config?

Hi all! My FreePBX 15 is up and running behind a Fritz!Box via NAT. Everything worked fine for some time but now I found that my external “static” IP is not really static and it may be changed. So I can’t no longer use in SIP Settings -> General SIP Settings -> NAT Settings a fixed “External Address” via “Detect Network settings”. I want to use our own web server to get my external IP address and no external service. For example wget http://some.web.address/cgi-bin/addr.cgi -q -O - | awk …

it was implemented in 2018.