Apologies if this is already answered. We have 2 offices. Office A dial 4xxx to call Office B, Office B call 5xxx to call Office A. Both Offices can see the other offices 3CXPhone-directory.xml We can get handsets to see both xml files but it won't auto add the 4 or 5 prefix. Previously, I have amended the xml adding the prefix. Is there a way to auto add extensions from the other office? Thanks.