Wiring for ISDN

[Tim M]

I'm upgrading from a USB to a PCI ISDN modem. I'm too tight to buy an ISDN cable (in any case I want a long one) so I prepose to make one my self. I've done lots of regular networking (making patch cables etc) so it should be easy. However, I can't find a wiring diagram for an ISDN cable anywhere; I understand the wiring is different to that in a patch or cross-over cable.

If anyone knows could they possibly post it here!

Here's a numbered diagram to aid with explanation:

[pettal]

Have you tried wiring it as a normal network cable to CAT5e or CAT6 standard? I think if memory serves, that ISDN will work off CAT3 standard.

Be careful though as I think you've got a diagram for telephony wiring and not LAN wiring........which won't work.

Have a look here:
http://www.zytrax.com/tech/layer_1/c...bles_jacks.htm

And follow the LAN wiring.

[Tim M]

I had a look at that website, and, after someone else sent me a wiring diagram I think I've made sense of it.

My mate says a regular cat5 patch cable won't work (but then he was trying to sell me an ISDN cable for £5....)

Might go into Maplins though and have a look at the wriing of their ISDN cables!

[pettal]

Originally Posted by Tim M

I had a look at that website, and, after someone else sent me a wiring diagram I think I've made sense of it.

My mate says a regular cat5 patch cable won't work (but then he was trying to sell me an ISDN cable for £5....)

Might go into Maplins though and have a look at the wriing of their ISDN cables!

Take a pair of wire cutters........Oop's did I say that!?

[DJL]

A standard CAT5 patch cable will work fine!

Technically BT specifies the 568B colour code but it doesn't matter

[Jelly]

Standard cat 5 or cat 3 cable will work fine