Telco Couplers

Telco inline couplers can be used to join to telco cable together.  Telco couplers come in two types but look the same on the outside.

1) Pin to Pin connection...GOOD. Pin 1 -> Pin 1, 2->2, 3->3, 4->4, 5->5, 6->6 

Often described as a "Computer Data Type".  Often the terms RJ12 are used to describe this connector.  This is the type of coupler that is compatible with the NCE Cab Bus.

2) Reverse connection...BAD.  Pin 1 -> Pin 6, 2->5, 3->4, 4->3, 5->2, 6->1

Suitable only for telephone.  Often the terms RJ11 or RJ14 are used to describe this connector.