[Freeswitch-users] SIP calls in from provider

I have a provider wanting to route calls in via direct SIP address. I’m not sure exactly what’s needed as used to setting up a gateway with username and password. Can anyone summarise (or point me to) the steps required to make this work? Am thinking: - ACL for provider’s IPs - Something needed in ‘public’ dial plan to catch whateveraddress@mysipdomain.com - what exactly? - Anything else required?