Problems with the dial plan ... There is a method to modify the External Dial Plan, we can not dial some numbers (800 XXX XXX, 115, 118, 187, etc., are special numbers in Italy), happens on FXO lines and SIP,in external.
Example: The operator enters "on any phone" 0 (for outside line) then 800 000 000,on the composition of the second 0, the phone responds "invalid number" and does not allow the call
We think it is a problem of Italy dial plan, you can change them?,
our system is configured as a region of Italy and Italy dial plan
is a known problem? you know to help me resolve it