External IP at Trunk level?

[david55]

I don’t know if it can be done through the GUI, but you create a type=transport section for each interface and include that in the type=register and type=endpoint sections.

There is a procedure here(it starts by saying no, then amends that), but it might be worth checking to see if there is now a GUI way:

Custom transport in PJSIP, possible from GUI?

At present I don’t see any feasible way of doing this at all with FreePBX. You can create a transport easily enough, by manually adding the necessary details to pjsip.transports_custom.conf, and you can confirm that the transport is created by the Asterisk output from pjsip show transports. But you can’t apply this transport to a PJSIP trunk (nor to an extension) directly from the GUI, so you must also manually create a PJSIP trunk then manually create dialplan to use the trunk. At that point, u…