Solved Given DN number cannot be used

[David DeBrock]

I am trying to create a new extension and getting the error "Given DN number cannot be used" when I try to use 2275 but was able to create 2274, 2276, and others. Why will it not allow 2275 as an extension?

 

[jed]

A guess, you might have been using the extension for somethimg else, a IVR, Ring Group or Queue extension?

 

[leejor]

You could dial the number from another extension. If it seems to go somewhere, check the Activity Log to see where.

 

[YiannisH_3CX]

Hello @David DeBrock

Make sure that the specific extension number is not used anywhere else in the PBX. Extension numbers need to be unique between regular and system extensions

 

[David DeBrock]

Thanks. Someone else had configured something that was conflicting.

 

[YiannisH_3CX]

Glad to see the issue has been resolved and thank you for updating the thread with your solution.