Zapojeni kabelu pro vzajemnou komunikaci aplikaci vyuzivajicich packet
driver interface a slip8250
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Konektory DB25:

 (2)         TxD ----- RxD         (3)
 (3)         RxD ----- TxD         (2)
 (4+5)   RTS+CTS ----- RTS+CTS   (4+5)
 (6+8)   DSR+DCD ----- DTR        (20) 
 (20)        DTR ----- DSR+CTS   (6+8)
 (7)         GND ----- GND         (7)

 Pravdepodobne by pracovalo i trojdratove propojeni 
 (RxD1-TxD2,TxD1-RxD2,GND-GND), to vsak jiz nebylo overeno.