Printer error

Anyone know where I can find what the error code 20 really means.
Obviously 20-39 mean different things but where can I find what they
are?
 
                         Additional Message Information

 

 Message ID . . . . . . :   PQT3621       Severity . . . . . . . :   40

 Message type . . . . . :   Information

 Date sent  . . . . . . :   05/15/03      Time sent  . . . . . . :
11:44:30   
 

 Message . . . . :   The session with device PRTF75 ended abnormally.

 Cause . . . . . :   The session with device PRTF75 at RMTLOCNAME

   207.144.134.232, using PORT 5001, ended abnormally.  The error code
is 20,   
   which indicates one of the following conditions:

     20-39: A communications failure occurred.

     40-59: An internal failure occurred.

 Recovery  . . . :   For error codes 20-39, check for problems in your
network. 
   After correcting the problem, start the printer writer to begin
processing   
   files again. If the problem continues, report it using the ANZPRB
command.   
   For error codes 40-59, start the printer writer again. If the problem

   continues, report it using the ANZPRB command.

 Technical description . . . . . . . . :   The internal message
identifier (ID) 
 
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Mark Allen
IS Manager
Wilkes Telephone & Electric
11 W. Court Street
Washington, GA 30673
Phone: (706) 678-9565
Fax: (706) 678-1000