How to Make a T1 Cross Over Cable 

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Making a T1 (T-1) Cross Over Cable is required in order to connect a PBX to another PBX, fax server or other CPE device.  The information below demonstrates how to make a T1 Cross Over Cable.

Pin out view facing the cable end. 

To make a T1 crossover cable you will need an RJ45 crimping tool and at least one RJ45 end.

Although shielded T1 cable is the ideal, you will find that using a Category 5  (CAT5) patch cable will work just fine with out any issues.

 The data pins are 1, 2, 4, and 5.   The third pin is ground which is frequently unused.

Pins 6,7 & 8 are unused.

Editors Note:

You can buy pre-made T1 Crossover Cables at TheNerds.net.

Simply go to their site and do a search for "T1 Crossover Cable" and you will see a listing of cables of various lengths.

This is the affiliate link: Get $9 Off any Order at TheNerds.net!

See Also....  

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Cable Making Tools and Parts

• Buy Crossover Cables

• Buy Bulk Patch Cables

• Cat5e Cable

• RJ45 Connector Ends

• RJ45 Crimping Tools

• Cable Testers

More Information

• Telecom For Small Business

• How to Make a T1 Crossover Jack (www.voip-info.org)

• How to Make a T1 Crossover Cable (www.ldfacts.com)

• How to Make an Ethernet Crossover Cable (www.ldfacts.com)

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