Yeack!!!!! With all the quality losses asociated with decoding and coding again, that will soung awfull.
Maybe I am too picky about quality, but I still do not like a call that went trought two “2 wire” conversions.
Like calling into a A800, and coming out another A800.
I only could imagine how a call “relayed” on 2 wire side could sound.
But it could be a good idea with a digital gateway. Come out one channel, go trought a mini dacs and come back in on another channel.
I gues the idea still good.