Dexterity - Access SQL Table on Different SQL Server

I'm trying to use Dexterity to access a SQL table that resides on a different SQL server.  I've tried the open table statement based on the example help:

               The following example opens the table Inventory_Master in the INVENT database located on the SQL server named Server12.

               open table Inventory_Master as DB_TYPE_SQL, ":Server12:INVENT/";

But it's still trying to find the database on the Local SQL server.  How do you access a table on a different server?