Topic: Support for Speedport W 504V (ARV8539PW)
I've posted some info about the T-Home Speedport W 504V router on the wiki:
Similar devices support OpenWRT, so maybe it's also possible for this one? At least, the router has some fine hardware: VOIP-Support, USB-Port, DECT, 300Mbits-Wifi, etc.
What are further steps to test OpenWRT for it? If someone is interested in the hardware, I would also ship it to a developer.