Music Adapter - Diagram included, but How ?


Joined Jul 17, 2007
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Joined Jul 17, 2007
Yes, very poor idea to short the L/R channels together. You could likely get by using a couple of resistors as a summer circuit.

Thread Starter


Joined Dec 5, 2011
First thanks for taking the time to help me sort this.

I'm trying to connect an MP3 player (3.5mm socket) to an extension on a phone system (RJ45)

The extension can be configured to support Music on hold, I just need a cable that is 3.5mm plug to RJ45 plug and what wires connect to what !!

I have just tried an old headphone cable, 3.5mm plug - shield to pin 1, left channel to 2.
This didn't work !!

Any ideas ?