This specified the format to use when converting NSAP addresses to a
 text representation.  You can enter one of the following keywords.
 These can be abbreviated, as long as the abbreviation is unique.

     DNA  - Use DNA text format
     OSI  - Use OSI text format

 These formats are:

     DNA format:  <afi>:<idi>:<predsp>-<locarea>:<nodeid>:<nsel>
     OSI format:  <afi><idi>+<predsp><locarea><nodeid><nsel>

 For example:

     DNA format:  39:840:0001:AA-00-04-00-05-04:20
     OSI format:  39840+0001AA000400050420