Voice/Data T1/E1 Crossover back-to-back Cable DIY or Buy?

[David_Mitchell]

Hi All,

I am trying to build a Voice lab and it's starting to cost a fortune for the kit.

I have seen a T1/E1 cross over cable on the link below and I need two of these from my set up

http://www.ebay.co.uk/itm/UTP-Voice-data-T1-E1-Cross-Crossover-back-to-back-Cable-Cisco-Voice-CCIE-CCVP-/230771200798#ht_1364wt_1231

Could anyone advise if this is a special type of UTP cable or is this standard Ethernet cable with RJ45 connectors just with a different pinout configuration?

If it's just the order of the wires in the cable I have a reel of UTP and a crimping tool I can use to make my own

Your help is appreciated as always

Cheers,

David

[Ayodeji Okanlawon · Accepted solution]

T1/E1 cross over cable is very easy. You should make yours and dont waste your money buying ready made..

The pin out you need is this..

1----------->4

2----------->5

4----------->1

5----------->2

The images below shows you the pin out configuration

https://www.google.co.uk/search?q=t1/e1+crossover+cable&tbm=isch&tbo=u&source=univ&sa=X&ei=EnRqUrmdK8GW0AWKsIGYDw&ved=0CD0QsAQ&biw=1600&bih=799

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"opportunity is a haughty goddess who waste no time with those who are unprepared"

[Rob Huffman · Accepted solution]

Hi David,

+5 to my friend Deji here You ROCK my friend!!

http://www.t-radtalk.com/howto/how_to_make_a_t1_cross_over.htm

http://www.cisco.com/en/US/products/hw/routers/ps233/products_tech_note09186a00800a3f09.shtml

Cheers!

Rob

"Why do the best things always disappear " 

- The Band

[Aman Soi]

Hi David,

You can also refer the link

https://supportforums.cisco.com/docs/DOC-9474

regds,

aman