I needed to clear the details from a trunk that was no longer being used. Unfortunately, there is no [Clear] button for trunks which is irritating. So I had to blank out all the fields individually and changed the trunk number back to it's default (003 in fact - I had set it to 9).

In a different index I then set up a new trunk I wanted to use and tried to use trunk number 9, but it won't let me saying it's already in use which is obvious nonsense as there is now NO trunk using that number. I tried restarting the Vigor but still it won't let me use that trunk number.

This is a bit of a problem as I need to use that trunk number. So how do I clear the memory of any reference to trunk 9 so I can use it again?

This problem now also resolved by ensuring even the PSTN port is not using the trunk number you're trying to set for the SIP trunk. Mea culpa.

I still think that page needs a [Clear] button.