Other: What is the difference between an Ethernet crossover and Audio crossover cable?

Question:  I'm making a CAT-5 cable to connect a HelixNet base station to a CellCom / Freespeak base station via 4-wire. 
My question is, can I use an store bought Ethernet crossover cable or do I need to construct a special CAT-5 cable for this purpose?


Answer:  There is a difference in the wiring between an Ethernet crossover cable and a AUDIO crossover cable.  Clear-Com products typically use an audio crossover cable which is a specially wired CAT-5 cable where the audio pairs (green and blue) are switched at one end of the cable when an audio connect is established between two devices with 4-wire RJ45 connections. 

An Ethernet CAT-5 cable is typically used to connect an Ethernet enabled device directly to a computer Ethernet jack. 

See below for cabling of each type of CAT-5 cable.


















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