Thanks Ian for all that interesting info about that the Sooloos audio endpoints are dedicated 10/100 ?***
Is that the official M info ?
So the connection between a core to a switch/router could be different ?
I will try out removing the blue and brown pair and see/hear whats coming out with my ensemble and ID40.
For a technical point of view, a termination(for the ID40) in the plug that sitting at the audioendpoint is the correct way to make that.
The same have to be made also on the switch/router to determinate
that outputs correct.

***
So for the audio endpoints the cheaper GISO-DS instead of the
GISO-GB can be used- but i like your idea about "removing unnecessary things"


800v3/218/271/8k.2/5k5s smile /5kC/DSP3200/Reviver/
TT-ELP/Graham Slee Revelation/Trinnov Altitude 32/OPPO 205
__Ayon/HB/Shunyata/Miltzow -- power cables,
__Ayon/Jungson/Miltzow --analog, Miltzow-- digital,
__Vortex/WMA ,