Thanks for replying to my question.
After some testing I think I have found a reasonable way to get done what I would like to do, which is assigning an already existing DN to a phone.
Does not matter if such DN was already assigned to another phone (which would make it a shared line) or unassigned.
Based on my testing you can do this by the Insert Phone feature but you should make sure that the txt file include at least one field of the Device-DN association (there is a specific SQL table for that).
In other words: if you only include Device Name + Directory Number fields, Insert Phone will try to write a new Directory Number into the db which cause a "duplicate record" error.
If you instead include Device Name + Directory Number fields + a Device-DN association field Insert Phone will just create a new bindinding in the specific SQL table.
The Device-DN association field must be properly filled-in (e.g. an External Phone Number Mask empty will probably trigger the "duplicate error").
Probably the easiest way is to include another Device-DN field like 'Caller Name 1' (which can be 't' or 'f' and is then easy to fix in case needed).
Finally, an example of a txt to be used as Insert Phone could be:
Device Name, Directory Number 1, Route Pattern 1,Caller Name 1
SEP000000000000,2300,PT-Office,t
With the above described txt I managed to remove DN 2500 from the phone SEP000000000000 and to assign to it the DN 2300.
Hope this helps.
