Well, I forgot to mention these addional DID rules are related to an entirely newly set up SIP Trunk. So, I am safe to go then? Backups are already taken, that's for sure.Hi korken,
The DID rules are unique per DID and Trunk, so the ones already existing are not overwritten. You will get an import error and will tell you the lines that the port and DID matched.
If you want to be sure, export the ones you have now to have a backup CSV.
You can also run a backup of 3CX before making any changes generally speaking.
Founded in 2005, when VoIP was an emerging technology, 3CX has gone on to establish itself as a global leader in business communications.