Pin assignment on rj45 when using rs232
You can remap the DB9 to the RJ45 of your Lantronix EDS-MD. i have found a adapter 'pin out' in the user manual.
there are Adapters and Serial Port Pinouts listet - in the overview there is one cable described as 


  500-153-  RJ45-to DB9F
  Connects the RJ45 RS232 serial port
  s of EDS-MD to a DB9M DTE interface of a PC or serial device to check
  that serial ports in the EDS- MD are functioning properly.  


but this one has no drawing..  so i looked at the rest and searched for the 'DB9M DTE' 


  200.2070A Adapter RJ45-to- DB9F
  Allows a standard straight-pinned CA T5 cable to connect the EDS-MD to the DB9M DTE interface of a PC or serial device.


for this is a drawing on page 96:
http://www.lantronix.com/pdf/EDS-MD_UG.pdf#page=96&amp;zoom=auto,-169,21
the only problem is there is no direct naming of the signals.
but i think you can use the DB9 Pinout to match your mentioned DB9.
So your table would be as following:  

DB9 List from Wikipedia
(http://de.wikipedia.org/wiki/RS-232#Verkabelung_und_Stecker)

DTE – data terminal equipment
DCE – data circuit-terminating equipment

Name is seen from DTE site.


DTE                     ---------------------->  DCE
RJ45 Lantronix EDS-MD   -   DB9  Name     -    RJ45 Intellivue
                        -   -    PG       -                  
      6                 -   3    TxD      -      7           
      3                 -   2    RxD      -      5           
      8                 -   7    RTS      -                  
      1                 -   8    CTS      -                  
      2                 -   6    DSR      -                  
      4&5               -   5    GND      -      4           
      2                 -   1    DCD      -                  
      7                 -   4    DTR      -                  
                        -   9    RI       -                  


pleas check again - eventually you have to exchange TxD &amp; RxD on one site...