yes I can dial it internally, I have it in the default partition which is the same as the 38XX. These numbers are coming in over a SIP trunk to a Nortel CS1000. The CS1000 is sending the 4XXX numbers the exact same as the 38XX. I don't know how to setup a translation. I have a phone at my desk that has 3850 on it and it works fine. If I chgange the number to 4466 it will not work, but I can dial it from the inside.