Pjsip transport question

If my server only has a single ethernet port and I have 3 or 4 udp endpoints should I have multiple transports each with a different port number or one transport like the docs show?

It’s up to you. If you don’t want TLS /TCP instead/beside UDP, you don’t want to use ipv6, you can stay with or set it to only listen your ethernet interface address like for instance.

As suggested, it depends on your requirements.

However note that chan_pjsip doesn’t use transports to filter incoming requests