[nsp] hand-made cross-over X21

[Hisashi Nakagawa]

Probably it does not work...   because there is no clock source
You clock source of supply It makes. Both It connects with pin6.

However, it is easy to carry out the difficulty of making
a clock generator.

 ## X.21 clock signal level is V.11 


Best regards,


At 11:13 02/10/30 +0100, odusseus wrote:
> Hi,
> 
> I made a cross over X21 in order to connect two routers back to back.
>  
> router-----Male X21----Converter-----Male X21------Router
>  
> Please, can someone have a look at my converter?
>  
> pin 1--------------shield GND------------------pin1
> pin 2--transmit + -------------receive + -----pin4
> pin 3--control + ---------------indication + --pin5
> pin 4--receive + ---------------transmit + ----pin2
> pin 5--indication + ------------control + ------pin3
> pin 6------------------timing + -------------------pin6
>  
> pin 8---------------control GND ----------------pin8
> pin 9--transmit - ---------------receive - ------pin11
> pin 10--control - ---------------indication - ---pin12
> pin 11--receive - ---------------transmit - -----pin9
> pin 12--indication - ------------control - -------pin10
> pin 13-----------------timing - ---------------------pin13
>  
>  
> Thank you.
>  
> Regards,
>  
> Christophe
> ------------------------------------------
> 
> Faites un voeu et puis Voila ! www.voila.fr 
> 
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