Mailing List Archive: [nsp] hand-made cross-over X21

[nsp] hand-made cross-over X21

Oct 30, 2002, 3:13 AM

Post #1 of 3 (1177 views)

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

RE: [nsp] hand-made cross-over X21 [ In reply to ]

tomas at tronet

Oct 30, 2002, 4:10 AM

Post #2 of 3 (1156 views)

Permalink

nope

dce----dte
(2,9)---->(4,11)
(3,10)---->(5,12)
(4,11)<----(2,9)
(5,12)<----(3,10)
(6,13)---->(6,13)

braces mean a twisted-pair, arrows show actual signal direction

--

deejay

> -----Original Message-----
> From: odusseus [mailto:odusseus@voila.fr]
> Sent: 30. októbra 2002 11:13
> To: cisco-nsp
> Subject: [nsp] hand-made cross-over X21
>
>
> 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
>
> _______________________________________________
> cisco-nsp mailing list real_name)s@puck.nether.net
> http://puck.nether.net/mailman/listinfo/cisco-nsp
> archive at http://puck.nether.net/pipermail/cisco-nsp/
>

Re: [nsp] hand-made cross-over X21 [ In reply to ]

hnakag at ttnet

Oct 30, 2002, 4:34 AM

Post #3 of 3 (1171 views)

Permalink

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
>
> _______________________________________________
> cisco-nsp mailing list real_name)s@puck.nether.net
> http://puck.nether.net/mailman/listinfo/cisco-nsp
> archive at http://puck.nether.net/pipermail/cisco-nsp/
>
>