I've been trying to get this set up for a couple hours now with no luck.
The CAT5/RJ45 plug I am using is wired with the 568B specification. I just cut an existing cat5 cable I bought in half. So the colors for 568B on my cable are:
Pin:
1 = Orange/White
2 = Orange
3 = Green/White
4 = Blue
5 = Blue/White
6 = Green
7 = Brown/White
8 = Brown
One thing I did do a little different is... Radio Shack did not have a 6.8K resistor, so I hooked up 2 2.2K ohm resistors plus 2 100ohm resistors in series. I assume that results in 6.8k ohms. I also assume it doesn't matter which direction you wire the capacitor. The resistors are all 1/2 watt, 5% tolerance and the capacitor is non-polarized 50 volts max.
Since your colors are in an arrangement that I am not familiar with, I just followed your pin #s. I am assuming that your pin 8 brown is the same as my pin 8 brown, which would make your pin 1 blue/white the same as my pin 1 orange/white.
I wired the 6.8K ohm resistor pack side of the speaker level to line level converter to the Output 1 (+) terminal.
I wired the other wire from the converter to NEG on the rs485 data bus (not output 1's - terminal) as described
here.
I then wired the capacitor to the pin 4 blue on the rj45 plug, and the other converter wire which essentially comes from NEG pin 2 orange. Remember those are my 568B colors. Lastly I wired pin 7 brown/white (which coincidently is that same as your pin 7 color) to Output 3 N/O.
I set up a rule to turn on output 3 when the amplifier is turned on. This rule is working as I can hear the relay and see the output 3 led illuminate.
One thing that I find odd is that if I short the converter wires from above (blue and orange) my intercom speakers pop (as if the talk or other button was pressed) and I can hear a relay in the greyfox controller click on. It doesn't seem like a relay should be clicking on when I cross those wires.
Other observations using a dc volt meter are as follows:
(voltage is approximate)
1v pin 6 green and pin 8 brown (seems like door button behavior)
8v pin 3 green/white and pin 6 green (nothing happens)
4.5v pin 3 green/white and pin 7 brown/white (nothing happens)
4.5v pin 3 green/white and pin 8 brown (nothing happens)
4.5v pin 3 green/white and pin 2 orange (nothing happens)
1v pin 7 brown/white and pin 6 green (relay on + speaker pop)
1v pin 2 orange and pin 6 green (relay on + speaker pop)
1v pin 2 orange and pin 4 blue (relay on + speaker pop)
Assuming my speaker level converter works, I am wondering if I'm not understanding your pin #s somehow?
Any ideas?
Edit: I ripped the converter out and made another one without the capacitor with the same results.