how to reroute android audio via bluetooth/DECT

I’m trying to reroute the audio from an android device to a DECT base (like jabra, plantronics, etc). I envision two ways and I cannot workout any of those:

  1. reroute all audio (mic and loudspeaker) of the android audio directly via DECT to the DECT base.
  2. reroute all audio via Bluetooth to a laptop, which in turn is connected via USB to the DECT base

Does anyone know how to do that rerouting (either via DECT or bluetooth)