cable to connect 2 1601 through the serial
Let's try google. [cisco serial crossover]
Top line of top hit says:- CAB-HD60MMX-1 LFH 60 Male ( DB60 Male ) To LFH 60 Male ( DB60 Male ) Cisco Router DCE To Cisco Router DTE LFH 60 Male ( DB60 Male) / Male Crossover 1 FT. $43.0
Note that you need to set the clock rate on the DCE end.
I am sure that you will get it cheaper elsewhere. OK - I'll look.
ID: 242 DCE/DTE DB60 Crossover Cable - 1FT $5.89 Wow - that seems cheap. I am sure that you won't find it much cheaper anywhere:-))
I know NOTHING of these companies, choose one for yourself. I am only helping you to find the correct cable.