RJ50 to DB9 and DB25


      Pins          Signal
DB-9 DB-25 RJ-50  (232) (485) 
 1     8    10     DCD   GND 
 2     3     9     RXD   CTS+ 
 3     2     8     TXD   RTS+ 
 4    20     7     DTR   RXD+ 
 5     7     6     GND   RXD- 
 6     6     5     DSR   CTS- 
 7     4     4     RTS   RTS- 
 8     5     3     CTS   TXD+ 
 9    22     2     RI    TXD-